mausoleums
plural of mausoleum

max chrysanthemum
Leucanthemum maximum, a flowering plant in the aster family.

mayweed
stinking chamomile (Anthemis cotula).
corn chamomile, field chamomile (Anthemis arvensis).
Plants of the genera Matricaria and Tripleurospermum.
A mayflower.

mayweeds
plural of mayweed

meadow salsify
Synonym of Jack-go-to-bed-at-noon (Tragopogon pratensis)

melancholy thistle
Any thistle of species Cirsium helenioides or Cirsium heterophyllum.

metabases
plural of metabase
plural of metabasis

metabasis
A change from one subject to another.
Any change in the course of a disease; metabola.

microchaete
Alternative form of microchaeta.

mikania
Any of the genus Mikania of asteraceous plants.

mikanias
plural of mikania

mile-a-minute
Any of several species of fast-growing plants, some of which are extremely invasive outside their native range and undesirable.
Any of several species of fast-growing plants, some of which are extremely invasive outside their native range and undesirable.
Any of several species of fast-growing plants, some of which are extremely invasive outside their native range and undesirable.
Any of several species of fast-growing plants, some of which are extremely invasive outside their native range and undesirable.
Any of several species of fast-growing plants, some of which are extremely invasive outside their native range and undesirable.
Any of several species of fast-growing plants, some of which are extremely invasive outside their native range and undesirable.

milfoil
Common yarrow, Achillea millefolium.
Any of several similar pungent Eurasian herbs, of the genus Achillea
Any plants of the genus Myriophyllum; water milfoil.

milfoils
plural of milfoil

milk thistle
Any of the thistles in the genus Silybum, especially Silybum marianum.
Lactuca serriola, prickly lettuce
Various plants of genus Sonchus (sow thistles) with milky sap:
Various plants of genus Sonchus (sow thistles) with milky sap:
Various plants of genus Sonchus (sow thistles) with milky sap:
Various plants of genus Sonchus (sow thistles) with milky sap:

millefolium
A homeopathic preparation of yarrow (Achillea millefolium).

mingwort
Synonym of wormwood (“Artemisia species”).

mint geranium
Costmary.

mistflower
Any of several plants in the tribe Eupatorieae, especially Ageratina riparia and members of the genus Conoclinium.

mistflowers
plural of mistflower

mom
Mother.
Mother.
An adult female owner of a pet.

monoptera
plural of monopteron

moon daisy
Synonym of oxeye daisy.

mountain tobacco
The plant Arnica montana.

mouse-ear hawkweed
A plant of species (Pilosella officinarum, syn. Hieracium pilosella) of small hawkweeds native to Eurasia, commonly found on dry grasslands.

mugworts
plural of mugwort

muhuhu
The flowering plant Brachylaena huillensis.

mums
plural of mum

murnong
A perennial herb of temperate Australia, Microseris lanceolata, or its edible tuber, an important food for Aboriginal Australians.

murnongs
plural of murnong

murrnong
Alternative form of murnong.

musk thistle
A biennial herb of species Carduus nutans, in the sunflower family Asteraceae with a large drooping purple flower head, native to parts of Eurasia and North Africa and a common invasive species elsewhere.

myelasthenia
spinal exhaustion

nailrod
Any of various plants of the genus Typha.

napweed
Alternative spelling of knapweed

napweeds
plural of napweed

nauplii
plural of nauplius

nauplius
A crustacean larva that has three pairs of locomotive organs (corresponding to antennules, antennae, and mandibles), a median eye, and little or no segmentation of the body.

naupliuses
plural of nauplius

niger
An Ethiopian herb, Guizotia abyssinica, grown for its seed and edible oil.

nipplewort
A flowering plant, Lapsana communis, that yields a milky juice.

nippleworts
plural of nipplewort

nodding thistle
Synonym of musk thistle.

noog
Synonym of niger (“Guizotia abyssinica”).

nose bleed
Alternative spelling of nosebleed.

noug
Alternative form of noog (“Guizotia abyssinica”).

nyjer
Alternative spelling of niger (Guizotia abyssinica)

old man
An elderly man.
One's father.
A husband, or male significant other, irrespective of age.
One's male employer, irrespective of age.
A unit's commanding officer, or the commander of a naval vessel, irrespective of age.
An Australian Aboriginal elder.
Term of address for a male friend, irrespective of age.
Synonym of Old Adam.
Synonym of southernwood.
The state of human nature without the spiritual transformation brought about by redemption through Jesus Christ.
Used attributively to denote something of exceptional size, strength, age etc.

old woman
An elderly woman.
A person (irrespective of age or sex) who is always complaining about his or her situation.
One's wife.
One's mother.
The plant sea wormwood.

old-man
Alternative spelling of old man.

oldman
Alternative form of old man.

oldmen
plural of oldman

olearia
Any of the genus Olearia of flowering plants in the family Asteraceae.

olearias
plural of olearia

onopordum
Any of the genus Onopordum of asteraceous thistles.

onopordums
plural of onopordum

orange daisy
A fleabane of species Erigeron aurantiacus.

orange hawkweed
Synonym of fox-and-cubs

osteospermum
Any of the genus Osteospermum of subshrubs.

osteospermums
plural of osteospermum

ox-eye daisy
Alternative spelling of oxeye daisy.

oxeye daisy
A widespread flowering plant native to Europe and temperate regions of Asia, Leucanthemum vulgare.
The black-eyed Susan, Rudbeckia hirta.

oxtongue
Beef tongue (a foodstuff).
A flowering plant of the genus Picris, especially Picris echioides (bristly oxtongue).
A flowering plant of the genus Anchusa, especially Anchusa officinalis (true alkanet).

oxtongues
plural of oxtongue

oyster plant
Acanthus mollis (bear's breeches), native to the Mediterranean
Mertensia maritima (oysterleaf, sea lungwort, sea bluebell), native to Europe and North America with leaves said to taste like oysters
Pseudopodospermum hispanicum (syn. Scorzonera hispanica, black salsify, black oyster plant), cultivated for its dark-skinned edible root
Tragopogon porrifolius (common salsify, vegetable oyster, purple salsify, Jerusalem star), cultivated for its light-skinned edible root
Tradescantia spathacea (formerly Tradescantia discolor) (oyster herb, boatlily, Moses in a basket, cradle lily, Moses in his cradle, Moses on a raft, Moses in the bulrushes, men in a boat, Moses-in-cradle, salsify)

oysterplant
Alternative form of oyster plant.

oysterplants
plural of oysterplant

paenula
A kind of woollen cloak or mantle used by Romans, worn on journeys and in rainy weather.
A chasuble, especially in its older form.

paenulae
plural of paenula

paenulas
plural of paenula

paritory
Obsolete form of pellitory.

parthenium
Any of the genus Parthenium of flowering plants in the aster family.

partheniums
plural of parthenium

pasture thistle
A North American biennial or perennial herb of species Cirsium pumilum.

pathfinder
One who discovers or makes a new path or way through an untraversed region.
One who is the first to do something in a particular field; an innovator, a pioneer.
Synonym of honey guide.
Ellipsis of pathfinder prospectus.

pathfinders
plural of pathfinder

pearly everlasting
Any of the genus Anaphalis of flowering plants.

pellitories
plural of pellitory

pellitory
Pellitory of the wall (Parietaria officinalis).
Any plant of the genus Parietaria.
Any plant of the genus Parietaria.
Any plant of the genus Parietaria.
Any plant of the genus Parietaria.
Achillea ptarmica (European pellitory, bastard pellitory, wild pellitory, sneezewort.
Tanacetum cinerariifolium (formerly Chrysanthemum cinerariifolium) (feverfew, Dalmatian pellitory).

philosophasters
plural of philosophaster

pilasters
plural of pilaster

pilotweed
Silphium laciniatum, a flowering plant in the aster family.

pineapple weed
Wild chamomile (Matricaria discoidea)
Dwarf coastweed (Amblyopappus pusillus)