Red maple : Acer rubrum Red maple : Acer rubrum Kingdom : Plant Phylum : Magnoliophyta Class : Magnoliopsida Order : Sapindales Family : Aceraceae Genus : Acer Species : rubrum L. Common name: Red maple Description Medium to large tree. Leaves usually 3-5 lobed, 1.5 dm long to 1.8 dm wide, glabrate above, glaucous and pubescent to green and glabrate beneath, serrate, base usually cordate, occasionally rounded, petioles as long as or a little longer than leaves. Plants are polygamous (may have separate male and female flowers on same tree or separate trees or flowers may be bisexual). Flowers appear long before leaves. Staminate and pistillate flowers in clusters, perianth usually red, 1-3 mm long. Fruit winged, usually red, 1.5-3.5 cm long. Habitat: Low, rich woods, swamps, floodplains, river banks, wet woodlands. Distribution: Maple Genus Could We Not See the Trees for the Forest? Canada’s confederation was back in 1867.

However our National Arboreal (tree) Emblem was not chosen until June of 1996. I have asked, "Could we not see the trees for the forest?". The provinces and the territories did not do a great deal better. It was just in the past twenty years that they got their act together and each chose an arboreal emblem, the latest being when Yukon named the sub-alpine fir. The Canadian Government chose an entire class of trees to be our National Arboreal Emblem. With the maple leaf featured on our flag, there was no doubt that our emblem had to be the maple (acer) genus. There are ten species (some have as many as three different names) of maple tree native to Canada. They grow in all areas of the country except the territories. The sugar maple, an eastern species, may be called hard or rock maple, and is the principal source of maple syrup and sugar. It takes 40 litres of sap to make one litre of syrup. A stylized version of the leaf is on the Canadian flag. The black or black sugar maple is restricted to southwestern Ontario, with a few scattered along the St. Lawrence and Ottawa River Valleys.

The bigleaf, broadleaf or Oregon maple, is native to Vancouver Island and the coastal mainland. The bark retains moisture and in the warm climate of southern British Columbia, the trunk and larger limbs are often covered with moss, liverwort and fern. Large leaves identify this distinctive species. The red maple, swamp maple or soft maple, is a common species in eastern Canada. This maple is highly variable and goes by several different names. It also hybridizes with the silver maple causing several intermediate varieties to occur. Young trees provide browse for deer. The silver maple or soft maple is native to southwestern Ontario, but because it is widely planted as a shade tree it may be found across the country. Trunks of dead silver maples are often hollow and provide homes for squirrels, raccoons, owls and ducks. The Manitoba maple, box-elder or ashleaf maple, is the only maple with a compound leaf (like the ash). It’s a hardy tree in the Prairie Provinces where it has been planted for shade and in shelter belts. The mountain maple is the most wide-spread maple and serves as understorey in most forest areas.

It does not grow to any great size and is found as a large shrub or at best, a very small tree. It is a common upstart on cut-over forest land. The stripped maple, sometimes called moose maple or moosewood is a shrubby understorey tree exceptional because of its smooth, green bark with whitish stripes. Young shoots are a favourite with deer and moose. The Douglas or Rocky Mountain maple is found in much of British Columbia and a few locations in Alberta. It is a large, scrubby shrub rather than a tree and is planted as an ornamental in gardens because of its bright fall colouring. The vine maple is another shrubby maple tree found mainly as understorey in southern British Columbia. The young shoots are a favourite browse for elk, deer and goats. As you can see, the maple family is large and glorius, especially when its various species light up the fall scene with their brilliant colours! Photos by Clayton Rollins Tree Taxonomy - How a Tree Gets Its Scientific Name Updated September 11, 2015.

Naming a Tree's Genus and Species Tree species and their names are a product of a two-part plant naming system that was introduced and promoted by Carolus Linnaeus in 1753. Linnaeus' grand achievement was the development of what is now called " binomial nomenclature " - a formal system of naming species of living things, including trees, by giving each tree a name composed of two parts called the genus and the species. These names are based on never-to-change Latin words. So Latin terms, when broken into their respective tree genus and species, are called a tree's scientific name. When using that special name, a tree can be identified by botanists and foresters around the world and in any language. The problem before the use of this taxonomic Linnaean tree classification system was the confusion surrounding the use, or misuse, of common names. Using common tree names as the only tree descriptor still presents problems today as common names differ greatly from location to location. continue reading below our video 10 Facts About the Titanic That You Don't Know Common names of trees are not as commonly used as you might think when traveling through the tree's natural range . Let's look at the sweetgum tree as an example.

Sweetgum is very common throughout the eastern United States as both a wild, native tree and also a tree planted in the landscape. Sweetgum can have only one scientific name, Liquidambar styraciflua , but has several common names including redgum, sapgum, starleaf-gum, gum maple, alligator-wood and bilsted. A Tree and Its Species Classification What does "species" of tree mean? A tree species is an individual kind of tree that shares common parts on the lowest taxonomic level. Trees of the same species have the same characteristics of bark, leaf, flower and seed and present the same general appearance. The word species is both singular and plural. There are nearly 1,200 tree species that grow naturally in the United States . Each tree species tends to grow together in what foresters call tree ranges and timber types which are confined to geographic areas with similar climatic and soil conditions. Many more have been introduced from outside North America and are considered to be naturalized exotics. These trees do very well when growing in similar conditions they were native to. It is interesting that tree species in the United states far exceeds the native species of Europe.

A Tree and Its Genus Classification What does "genus" of tree mean? Genus refers to the lowest classification of a tree before determining the related species. Trees of the genus have the same basic flower structure and may resemble other genus members in outward appearance. Tree members within a genus can still vary significantly in leaf shape, style of fruit, color of bark and tree form. The plural of genus is genera. Unlike common tree names where the species is often named first; for example, red oak, blue spruce and silver maple - the scientific genus name is always named first; for example, Quercus rubra, Picea pungens and Acer saccharinum. The Hawthorn tree, genus Crataegus leads the tree genera with the longest list of species - 165. Crataegus is also the most complicated tree to identify down to the species level. The Oak tree or genus Quercus is the most common forest tree with the greatest number of species. Oaks have some 60 related species and are native to nearly every state or Provence in North America.

North America's Species-rich Eastern Forest Eastern North America and most particularly the southern Appalachian Mountains claim the title of having the most native tree species of any area of North America. Seems like this area was a natural sanctuary were conditions allowed trees to survive and multiply after the Ice Age. Interestingly, Florida and California can brag about their total number of tree species which were, and are, transported into these states from all over the world. I cringe when someone asks me to identify a tree from these two states. I know immediately that it will be a world search of a bountiful tropic tree list. These exotic immigrants are not only an identification problem but also an invasive problem with future negative habitat change. Plants - 6 | Britannica.com Plants Plantae any multicellular eukaryotic life form characterized by (1) photosynthetic nutrition (a characteristic possessed by all plants except some parasitic plants and underground orchids), in which chemical...

Browse Subcategories: (64) Displaying 401 - 500 of 800 results kenaf (species Hibiscus cannabinus), fast-growing plant of the hibiscus, or mallow, family (Malvaceae) and its fibre, one of the bast fibre group. It is used mainly as a jute substitute. The plant grows wild in Africa, where the fibre is sometimes known as... Kerguelen cabbage Pringlea antiscorbutica plant resembling the common cabbage and belonging to the same family (Brassicaceae), named for the Kerguelen Islands, where it was discovered. The sole member of its genus, Kerguelen cabbage inhabits only a few, remote islands... Kidston, Robert English paleobotanist, noted for his discoveries and descriptions of plant fossils from the Devonian Period (about 416 million to 359 million years ago). Kidston studied botany at the University of Edinburgh, and in 1880 he became honorary paleobotanist... Knowlton, Frank Hall U.S.

paleobotanist and pioneer in the study of prehistoric climates based on geologic evidence, who discovered much about the distribution and structure of fossilized plants. He was professor of botany at the Columbian (now George Washington) University,... kola nut caffeine-containing nut of Cola acuminata and Cola nitida, trees of the cocoa family (Sterculiaceae) native to tropical Africa and cultivated extensively in the American tropics. The evergreen tree grows to 18.3 metres (60 feet) and resembles the chestnut.... Kölreuter, Josef Gottlieb German botanist who was a pioneer in the study of plant hybrids. He was first to develop a scientific application of the discovery, made in 1694 by the German botanist Rudolph Jacob Camerarius, of sex in plants. Kölreuter was educated at the universities... kudzu vine Pueraria montana twining perennial vine of the pea family (Fabaceae). Kudzu is native to China and Japan, where it has long been grown for its edible starchy roots and for a fibre made from its stems. The kudzu vine is a useful fodder crop for livestock...

kumquat Fortunella genus of evergreen shrubs or trees of the family Rutaceae, grown for their tart fruits. Native to eastern Asia, these small trees are cultivated throughout the subtropics. Kumquat fruits may be eaten fresh, or they may be preserved and made... lady’s slipper any member of several genera of orchids, family Orchidaceae, in which the lip of the flower is slipper-shaped. The genus Cypripedium has about 50 temperate and subtropical species. One well-known species is the yellow lady’s slipper (Cypripedium calceolus);... Lamiaceae the mint family of flowering plants, with 236 genera and more than 7,000 species, the largest family of the order Lamiales. Lamiaceae is distributed nearly worldwide, and many species are cultivated for their fragrant leaves and attractive flowers. The... Lamiales mint order of flowering plants, including 24 families, 1,059 genera, and more than 23,800 species.

The main families in the order are Lamiaceae, Verbenaceae, Plantaginaceae, Scrophulariaceae, Orobanchaceae, Acanthaceae, Gesneriaceae, Bignoniaceae, Oleaceae,... larch Larix any of about 10 to 12 species of coniferous trees constituting the genus Larix of the family Pinaceae, native to cool temperate and subarctic parts of the Northern Hemisphere. One species, Larix griffithii, is found only in the Himalayas. A larch... Laurales the laurel order of flowering plants, containing 7 families, 91 genera, and about 2,900 species. Members of Laurales are trees, shrubs, or woody vines. Most are found in tropical or warm temperate climates, and they are especially abundant in regions... lavender Lavandula genus of about 30 species of the mint family (Lamiaceae), native to countries bordering the Mediterranean. Lavender species are common in herb gardens for their fragrant leaves and attractive flowers. The plants are widely cultivated for their...

leafy liverwort any of numerous species of liverworts (class Hepatopsida), generally of the order Jungermanniales, in which the plant body is prostrate and extends horizontally in leaflike form with an upper and lower surface. About three-quarters of all liverworts... leek Allium porrum hardy biennial plant of the amaryllis family (Amaryllidaceae), grown as a vegetable. The leek is an ancient crop and is native to eastern Mediterranean lands and the Middle East. The plant is related to the onion and has a mild, sweet,... lemon Citrus × limon small tree or spreading bush of the rue family (Rutaceae) and its edible fruit. Lemon juice is a characteristic ingredient in many pastries and desserts, such as tarts and the traditional American lemon meringue pie. The distinctive astringent... Lennooideae the sand food subfamily of the family Boraginaceae, composed of two genera and four species of parasitic plants. The unusual plants inhabit desert regions in Colombia, Venezuela, Mexico, and the southwestern United States, and many are considered rare....

lentil Lens culinaris small annual legume of the pea family (Leguminosae) and its lens-shaped edible seed, which is rich in protein and one of the most ancient of cultivated foods. Of unknown origin, the lentil is widely cultivated throughout Europe, Asia,... Lepidodendron extinct genus of tree -sized lycopsid plants that lived during the Carboniferous Period (about 359 million to 299 million years ago). Lepidodendron and its relatives— Lepidophloios, Bothrodendron, and Paralycopodites —were related to modern club mosses.... lespedeza Lespedeza genus of about 40 species of plants in the pea family (Fabaceae). All lespedezas are adapted to warm humid climates and are native to North America, tropical and East Asia, and Australia. A number of species are useful as forage and green manure... lettuce Lactuca sativa cultivated annual salad plant, probably derived from the prickly lettuce (L. scariola) of the family Asteraceae.

Four botanical varieties of lettuce are cultivated: (1) asparagus lettuce (variety asparag ina), with narrow leaves and a... liana any long-stemmed, woody vine that is rooted in the soil and climbs or twines around other plants. They are a conspicuous component of tropical forest ecosystems and represent one of the most important structural differences between tropical and temperate... licorice Glycyrrhiza glabra perennial herb of the pea family (Fabaceae), and the flavouring, confection, and folk medicine made from its roots. Licorice is similar to anise (Pimpinella anisum) in flavour; both plants are somewhat sweet and slightly bitter. The... lignum vitae Guaiacum any of several trees in the family Zygophyllaceae (order Zygophyllales), particularly Guaiacum officinale, native to the New World tropics. G. officinale occurs from the southern United States to northern South America. It grows about 9 metres... lilac any of about 25 species of fragrant and beautiful northern spring-flowering garden shrubs and small trees constituting the genus Syringa of the family Oleaceae.

Lilacs are native to eastern Europe and temperate Asia. Their deep green leaves enhance the... Liliales the lily order of monocotyledonous flowering plants, containing 11 families, 67 genera, and 1,558 species of largely perennial herbs and climbers. Members of this order are important as sources of food, in the production of drugs and chemicals, and especially... lily the common name applied to herbaceous flowering plants belonging to the genus Lilium of the family Liliaceae. The genus contains between 80 and 100 species, native to the temperate areas of the Northern Hemisphere. Lilies are prized as ornamental plants,... lime any of several species and hybrids of trees and shrubs in the rue family (Rutaceae), widely grown in tropical and subtropical areas for their edible acidic fruits. The Persian lime (Citrus × latifolia) is one of the most common commercial varieties,... linden any of several trees of the genus Tilia of the hibiscus, or mallow, family (Malvaceae), native to the Northern Hemisphere. Of the approximately 30 species, a few are outstanding as ornamental and shade trees.

They are among the most graceful of deciduous... Lindley, John British botanist whose attempts to formulate a natural system of plant classification greatly aided the transition from the artificial (considering the characters of single parts) to the natural system (considering all characters of a plant). In 1819... Linnaeus, Carolus Swedish naturalist and explorer who was the first to frame principles for defining natural genera and species of organisms and to create a uniform system for naming them (binomial nomenclature). Early life and travels Linnaeus was the son of a curate... live oak any of several species of North American ornamental and timber trees belonging to the red oak group of the genus Quercus in the beech family (Fagaceae). Specifically, the term refers to the southern live oak (Quercus virginiana), a massive evergreen... liverwort Marchantiophyta any of more than 9,000 species of small nonvascular spore -producing plants. Liverworts are distributed worldwide, though most commonly in the tropics. Thallose liverworts, which are branching and ribbonlike, grow commonly on moist soil...

Loasaceae mostly tropical American plant family of 14 genera and 265 species of the dogwood order (Cornales), many with painfully stinging hairs but beautiful and often bizarre flowers in red, orange, yellow, or white. The plants are frequently twining and mostly... Loganiaceae family of flowering plants in the order Gentianales, containing 13 genera with more than 400 species of woody vines, shrubs, or trees native primarily to tropical areas of the world. Members of the family bear leaflike appendages at the base of the leafstalks... loofah Luffa genus of seven species of annual climbing vines of the gourd family (Cucurbitaceae), native to the Old World tropics. Two species (Luffa acutangula and L. aegyptiaca) are commonly cultivated for their fruits, which are edible when young and have... loosestrife any of the ornamental plants of the family Lythraceae, especially the genera Lythrum and Decodon, and Lysimachia of the family Myrsinaceae.

Purple loosestrife (Lythrum salicaria), native to Eurasia and now common in eastern North America, grows 0.6 to... loquat Eriobotrya japonica subtropical tree of the rose family (Rosaceae), grown for its evergreen foliage and edible fruit. The loquat is native to central eastern China. It was introduced to Japan more than 1,000 years ago, where it was developed horticulturally... Loranthaceae one of the mistletoe families of the sandalwood order (Santalales), having approximately 65 genera and about 850 species of parasitic flowering trees or shrubs. Some authorities also consider the 11 genera and about 450 species of the family Viscaceae,... lotus any of several different plants. The lotus of the Greeks was the species Ziziphus lotus of the buckthorn family (Rhamnaceae), a bush native to southern Europe. It has large fruits containing a mealy substance that can be used for making bread and fermented...

love grass Eragrostis genus of about 350 species of tufted annual and perennial grasses in the family Poaceae. Love grasses are native to tropical and temperate regions of the world, and several are cultivated as forage or as ornamentals. Love grasses are typically... lower vascular plant any of the spore-bearing vascular plants, including the ferns, club mosses, spike mosses, quillworts, horsetails, and whisk ferns. Once considered of the same evolutionary line, these plants were formerly placed in the single group Pteridophyta and were... lupine Lupinus genus of about 200 species of herbaceous and partly woody plants in the pea family (Fabaceae). Lupines are widely distributed in the Mediterranean area but are especially numerous on the prairies of western North America. Many are grown as ornamentals,... lychee Litchi chinensis a tree of the soapberry family (Sapindaceae), grown for its edible fruit. Lychee is native to Southeast Asia and has been a favourite fruit of the Cantonese since ancient times. Its introduction into the Western world came when it reached...

lycophyte (division Lycopodiophyta or Lycophyta), any spore-bearing vascular plant that is one of the club mosses and their allies, living and fossil. Present-day lycophytes are grouped in 6 genera (some botanists divide them into 15 or more): Huperzia, Lycopodiella,... macadamia (Macadamia), any of about 10 species of ornamental evergreen tree belonging to the family Proteaceae, producing an edible, richly flavoured dessert nut. Macadamias originated in the coastal rain forests and scrubs of what is now Queensland in northeastern... madder Rubia genus of about 80 species of perennial plants in the madder family (Rubiaceae), several of which were once commonly used as a source of dye. Madder species are distributed throughout the Mediterranean region, Asia, Africa, and the Americas. The... magnolia Magnolia any member of the genus Magnolia (family Magnoliaceae; order Magnoliales), about 240 species of trees and shrubs native to North and South America, the Himalayas, and East Asia.

They are valued for their large and fragrant white, yellow, pink,... Magnoliaceae magnolia family of the order Magnoliales that contains at least two genera and nearly 250 species, including many handsome, fragrant-flowering trees and shrubs. Most have simple leaves and an elongated conelike floral axis with flowers that have six... Magnoliales the magnolia order of flowering plants, consisting of 5 families, 154 genera, and about 3,000 species. Members of Magnoliales include woody shrubs, climbers, and trees. Along with the orders Laurales, Piperales, and Canellales, Magnoliales forms the... Magnoliidae subclass of woody or herbaceous flowering plants belonging to the class Magnoliopsida. Members of the Magnoliidae are dicotyledonous plants that retain some primitive anatomic and morphological characteristics and are not closely related to more advanced... mallow any of several flowering plants in the hibiscus, or mallow, family (Malvaceae), especially those of the genera Hibiscus and Malva. Hibiscus species include the great rose mallow (H.

grandiflorus), with large white to purplish flowers; the soldier rose... Malpighiales large order of flowering plants that includes 40 families, more than 700 genera, and almost 16,000 species. Many of the families are tropical and poorly known, but well-known members of the order include Salicaceae (willow family), Violaceae (violet... Malvaceae the hibiscus, or mallow, family (order Malvales) containing some 243 genera and at least 4,225 species of herbs, shrubs, and trees. Representatives occur in all except the coldest parts of the world but are most numerous in the tropics. A number of species... Malvales medium-sized order, known as the Hibiscus or mallow order, mostly of woody plants, consisting of 10 families, 338 genera, and about 6,000 species. The plants grow in various habitats throughout much of the world, and a number of members are important...

mandacaru Cereus jamacaru species of treelike cactus (family Cactaceae) native to arid and semiarid regions of northeastern Brazil. With a height of up to 9 metres (nearly 30 feet), mandacaru is a tall cactus and features succulent segmented stems that arise from... mandrake Mandragora genus of six species of hallucinogenic plants in the nightshade family (Solanaceae), native to the Mediterranean region and the Himalayas. The plants are particularly noted for their potent roots, which somewhat resemble the human form and... mango Mangifera indica member of the cashew family (Anacardiaceae), one of the most important and widely cultivated fruits of the tropical world and the tree on which it grows, considered indigenous to eastern Asia, Myanmar (Burma), and Assam state of India.... mangosteen (species Garcinia mangostana), handsome tropical tree of the family Clusiaceae, native to Southeast Asia, and its tart-sweet fruit. In Myanmar (Burma) it is called men-gu. Under favourable conditions, the slow-growing mangosteen tree can reach a height...

mangrove any of certain shrubs and trees that belong primarily to the families Rhizophoraceae, Acanthaceae, Lythraceae, Combretaceae, and Arecaceae; that grow in dense thickets or forests along tidal estuaries, in salt marshes, and on muddy coasts; and that characteristically... maple (Acer), any of a large genus (about 200 species) of shrubs or trees in the family Sapindaceae, widely distributed in the North Temperate Zone but concentrated in China. Maples constitute one of the most important groups of ornamentals for planting in... Marattiaceae the giant fern family, the only family of the fern order Marattiales. The family contains four genera and some 150 modern species of large tropical and subtropical ferns with stout, erect stems. The leaves (fronds) may be very large in some species,... Marchantia genus of liverworts (creeping ribbonlike plants) in the order Marchantiales, commonly found on moist clay or silty soils, especially on recently burned land throughout the Northern Hemisphere. Marchantia polymorpha, a well-known species, often is discussed...

Marín, Francisco de Paula horticultural experimenter who introduced numerous plant species to the Hawaiian Islands. Marín acquired his horticultural knowledge as a youth working in the Andalusian vineyards of Spain. He was taken to California and then to the Hawaiian Islands,... marjoram Origanum majorana perennial plant of the mint family (Lamiaceae), grown as a culinary herb. Its fresh or dried leaves and flowering tops are used to season many foods, imparting a warm, aromatic, slightly sharp, and bitterish flavour. Marjoram is particularly... Martius, Karl Friedrich Philipp von German botanist best known for his work on Brazilian flora. Martius studied medicine at Erlangen University and was an élève of the Royal Bavarian Academy (1814–17). On April 2, 1817, Martius left from Trieste with an Austrian expedition to Brazil. In... mate tealike beverage, popular in many South American countries, brewed from the dried leaves of an evergreen shrub or tree (Ilex paraguariensis) related to holly. It is a stimulating drink, greenish in colour, containing caffeine and tannin, and is less...

Mauritius hemp Furcraea gigantea plant of the family agave (Agavaceae) and its fibre, belonging to the leaf fibre group. Despite its name, it is not a true hemp. Although the plant is native to Brazil, commercial production of the fibre did not begin there until about... mayflower either of two spring-blooming wild flowers native to eastern North America, or one of several plants that bloom in the spring in Europe. Podophyllum peltatum (family Berberidaceae) is more often called mayapple, and Epigaea repens (family Ericaceae)... Mediterranean vegetation any scrubby, dense vegetation composed of broad-leaved evergreen shrubs, bushes, and small trees usually less than 2.5 m (about 8 feet) tall and growing in regions lying between 30° and 40° north and south latitudes. These regions have a climate similar... medlar Mespilus either of two species of the genus Mespilus of the rose family (Rosaceae). The common medlar (M.

germanica) is a small, much-branched, deciduous, spinous tree known for its edible fruits. The plant is native to Europe, from the Netherlands southward,... Meliaceae the mahogany family of flowering plants (order Sapindales), comprising 51 genera and about 575 species of trees and (rarely) shrubs, native to tropical and subtropical regions. Most members of the family have large compound leaves, with the leaflets... melon Cucumis melo trailing vine in the gourd family (Cucurbitaceae), grown for its often musky-scented edible fruit. The melon plant is native to central Asia, and its many cultivated varieties are widely grown in warm regions around the world. Most commercially... Mendel, Gregor botanist, teacher, and Augustinian prelate, the first to lay the mathematical foundation of the science of genetics, in what came to be called Mendelism. Education and early career Born to a family with limited means in German-speaking Silesia, Mendel...

Menyanthaceae flowering plant family of the order Asterales, consisting of five genera and about 40 species of aquatic or marsh herbs that are native to temperate areas of the world. Menyanthaceae species often spread vegetatively by creeping underwater rhizomes (stems)... meristem region of cells capable of division and growth in plants. Meristem cells are typically small cells the diameters of which in different directions are about equal. They have a dense cytoplasm and relatively few small vacuoles (watery saclike enclosures).... Metaxyaceae small family of ferns in the division Pteridophyta (the lower vascular plants). The single genus, Metaxya, contains two species, M. rostrata and M. lanosa. M. rostrata is widespread in Neotropical mountains from southern Mexico to Bolivia and Brazil.... Mexia, Ynes Enriquetta Julietta American botanical collector and explorer whose discoveries helped to clarify and complete botanical records. The descendant of Mexican-Americans living in Texas, she lived in Texas, Philadelphia, and Mexico City before moving to San Francisco in 1908,...

Michaux, André French botanist who spent 12 years studying the plants of North America. From 1779 to 1781 Michaux travelled in England, Spain, and in the Auvergne region of south central France, studying the plants of these areas. In 1782 the French government sent... millet any of several species of cereal grasses in the family Poaceae, cultivated for their small edible seeds. Millets were probably first cultivated in Asia more than 4,000 years ago, and they were major grains in Europe during the Middle Ages. Today, though... mimosa Mimosa large genus of plants in the pea family (Fabaceae), native to tropical and subtropical areas throughout both hemispheres. They are so named from the movements of the leaves in certain species that “mimic” animal sensibility. The well-known sensitive... mint Mentha genus of 25 species of fragrant herbs of the mint family (Lamiaceae). Native to Eurasia, North America, southern Africa, and Australia, mints are widely distributed throughout the temperate areas of the world and have naturalized in many places....

Mirbel, Charles-François Brisseau de French botanist whose book Traité d’anatomie et de physiologie végétale, 2 vol. (1802; “Treatise on Plant Anatomy and Physiology”), earned him recognition as a founder of plant cytology and plant physiology. His most notable contribution to plant cytology... mistletoe any of many species of parasitic plants of the families Loranthaceae, Misodendraceae, and Santalaceae, especially those of the genera Viscum, Phoradendron, and Arceuthobium (all of which are members of the family Santalaceae). Most mistletoes parasitize... monocotyledon one of the two great groups of flowering plants, or angiosperms, the other being the dicotyledons (dicots). There are approximately 60,000 species of monocots, including the most economically important of all plant families, Poaceae (true grasses), and... Morison, Robert Scottish botanist whose work, along with that of his contemporary John Ray, served to elucidate and develop the systematic classification of plants.

Morison was the director of the Royal Gardens at Blois, France (1650–60). He returned to England as physician... mosquito fern Azolla any of six species in the fern family Salviniaceae of the division Pteridophyta (the lower vascular plants). This family contains only one other genus, Salvinia (10–12 species). Members of Azolla are distributed nearly worldwide but are most diverse... moss Bryophyta any of at least 12,000 species of small nonvascular spore-bearing land plants. Mosses are distributed throughout the world except in salt water and are commonly found in moist shady locations. They are best known for those species that carpet... mountain ash Sorbus genus of several shrubs or trees in the rose family (Rosaceae), native to the Northern Hemisphere. Unrelated to true ashes (genus Fraxinus, family Oleaceae), mountain ashes are widely cultivated as ornamentals for their flower clusters and brightly... mountain mahogany Cercocarpus genus of five or six species of North American shrubs or small trees in the rose family (Rosaceae).

The hard heartwood of these trees is highly valued for carving, and it is said that the common name was given by the Mormons, who used the... Mueller, Sir Ferdinand von German-born Australian botanist and explorer who was known for his studies of the plants of Australia. After an apprenticeship as pharmacist, Mueller began the study of botany at the University of Kiel. Soon after receiving his Ph.D., he left Germany... mulberry any of several distinct small to medium-sized trees valued primarily for their ornamental effects. The common mulberries, in the genus Morus (family Moraceae), are 10 species, with more or less juicy fruits, native to temperate Asia and North America.... Musaceae the banana family of plants (order Zingiberales), consisting of 2 genera, Musa and Ensete, with about 50 species native to Africa, Asia, and Australia. The common banana (M. sapientum) is a subspecies of the plantain (M. paradisiaca). Both are important...

mustard any of several herbs belonging to the mustard family of plants, Brassicaceae (Cruciferae), or the condiment made from these plants’ pungent seeds. The leaves and swollen leaf stems of mustard plants are also used, as greens, or potherbs. The principal... Mutis, José botanist who initiated one of the most important periods of botanical exploration in Spain. After receiving the bachelor’s degree from the University of Sevilla (Seville) in 1753, Mutis studied medicine at Madrid and in 1757 became physician to the royal... Myricaceae the wax myrtle family of dicotyledonous flowering plants, in the beech order (Fagales), found throughout the world, with three genera of trees and shrubs having aromatic leaves. Many of the species bear yellow glandular dots on the surface, from which... Myristicaceae the nutmeg family of the magnolia order (Magnoliales), best known for the fragrant, spicy seeds of nutmeg (Myristica fragrans). The family contains 15 other genera and about 380 species of evergreen trees found throughout moist tropical lowlands. Most...

Myrtales the myrtle order of flowering plants, composed of 14 families, 380 genera, and about 11,000 species distributed throughout the tropics and warmer regions of the world. The majority of these species belong to just two families, Melastomataceae and Myrtaceae.... myrtle any of the evergreen shrubs in the genus Myrtus, belonging to the family Myrtaceae. Authorities differ widely over the number of species the genus includes. Most occur in South America; some are found in Australia and New Zealand. True myrtles have a... Maple, Box Elder (Acer) Genus Level Details & Allergy Info Home « Acer Maple, Box Elder Genus Details Maples are trees and shrubs with worldwide distribution, of which 13 species are native to US. Almost all maples are deciduous with distinct, palmate leaves (with parts diverging from a common base, as the fingers of a hand). The leaf is used as a logo for the Toronto Mapleleafs hockey team. Fruit are paired, winged seeds, known as samara. Many maples are popular for ornamental and street plantings.

Acer negundo (box elder) differs from other maples in that its leaves are pinnately compound (separate leaves diverge from one central stem), and in that it has male and female flowers on separate trees that are entirely wind-pollinated. Trees reach 30-100 feet in height and 2-4 feet in diameter. In the U.S. flowering usually occurs in early spring through April or May, but can begin in January and February for sugar maples and other species, with a few species in W. U.S. flowering in June and July. Box elder (Acer negundo). Japanese maple (Acer palmatum) Maple, Box Elder Allergy Info All maple species are potentially allergenic. Box elder, which is primarily wind-pollinated, has significantly allergenic pollen. Silver maple has a secondary allergic importance except where very abundant. The other maples appear to cause fewer problems. Maple, Box Elder Pollen Description Grains vary in shape from prolate to spheroidal; the amb rounded-triangular with convex sides, and 3-colpate or 3-colporate. The colpi are long with tapering, blunt or rounded ends.

Pollen grains of Acer negundo (box-elder) have a distinct rugulate-undulating sexine. The pollen grains vary in size, depending on the species and can vary in size from 30-51 micrometers x 20-36 micrometers to 22-26 x 20-36 micrometers in diameter. Acer negundo (box elder), multiple grains. Herb. MIN Acer genus (maple type), multiple grains. Herb. MIN Species in This Genus

Question: To which genus of trees does the Maple belong?
Answer: ACER