Question: Sparganium and Cyperaceae, are which type of entities?

full_context: Document 1: Sparganium: Sparganium (bur-reed) is a genus of flowering plants, described as a genus by Linnaeus in 1753. It is widespread in wet areas in temperate regions of both the Northern and Southern Hemispheres. The plants are perennial marsh plants that can grow to 3.5 m (depending on the species), with epicene flowers.
Document 2: Schoenoplectus: Schoenoplectus (club-rush [Old World species], bulrush or tule [New World species]) is a genus of plants in the sedges with a cosmopolitan distribution. Note that the name bulrush is also applied to species in the unrelated genus "Typha" as well as to other sedges. The genus "Schoenoplectus" was formerly considered part of "Scirpus", but recent phylogenetic data shows that they are not closely related.
Document 3: Cyperaceae: The Cyperaceae are a family of monocotyledonous graminoid flowering plants known as sedges, which superficially resemble grasses and rushes. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "Carex" genus of "true sedges" with over 2,000 species. These species are widely distributed, with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges may be found growing in almost all environments, many are associated with wetlands, or with poor soils. Ecological communities dominated by sedges are known as sedgelands.
Document 4: Spartina alterniflora: Spartina alterniflora, the smooth cordgrass, saltmarsh cordgrass, or salt-water cord grass, is a perennial deciduous grass which is found in intertidal wetlands, especially estuarine salt marshes. It grows 1 - tall and has smooth, hollow stems which bear leaves up to 20-60 cm long and 1.5 cm wide at their base, which are sharply tapered and bend down at their tips. Like its relative saltmeadow cordgrass "S. patens", it produces flowers and seeds on only one side of the stalk. The flowers are a yellowish-green, turning brown by the winter. It has rhizoidial roots, which, when broken off, can result in vegetative asexual growth. The roots are an important food resource for snow geese. It can grow in low marsh (frequently inundated by the tide) as well as high marsh (less frequently inundated), but it is usually restricted to low marsh because it is outcompeted by saltmeadow cordgrass in the high marsh. It grows in a wide range of salinities, from about 5 psu to marine (32 psu), and has been described as the "single most important marsh plant species in the estuary" of Chesapeake Bay. It is described as intolerant of shade.
Document 5: Carex spissa: Carex spissa is a species of sedge known by the common name San Diego sedge. It is native to the southwestern United States in California, Arizona, and New Mexico, and far northern Mexico. It grows in wet places such as seeps and streambanks, sometimes on serpentine soils. This sedge looks somewhat like a cattail. It produces angled stems easily exceeding a meter in height surrounded by leathery green to reddish leaves up to about 1.2 meters long. The inflorescence is up to 80 centimeters long, with many long reddish brown flower spikes, each holding up to 300 developing fruits.
Document 6: Kyllinga: Kyllinga is genus of flowering plants in the sedge family known commonly as spikesedges. They are native to tropical and warm temperate areas of the world, especially tropical Africa. These sedges vary in morphology, growing to heights from 2 centimeters to a meter and sometimes lacking rhizomes. They are closely related to "Cyperus" species.
Document 7: Cyperus articulatus: Cyperus articulatus is an aromatic species of sedge known by the common names jointed flatsedge and priprioca. It has also been known as Guinea rush or adrue. It grows as a perennial herb. It grows in water or near it in rivers, streams, lakes, and swamps with a hyperhydrate (emergent aquatic) or possibly tenagophyte (submerged juvenile and terrestrial adult) growth pattern. It is widespread across tropical and subtropical regions in Africa, southern Asia, northern Australia, the southeastern United States, the West Indies, and Latin America. While it is closely related to highly invasive sedges such as purple nut sedge ("Cyperus rotundus"), priprioca is less prolific and competitive than its relative.
Document 8: Polygonum spergulariiforme: Polygonum spergulariiforme is a North American species of flowering plants in the buckwheat family known by the common name spurry knotweed or fall knotweed. It grows in western Canada (British Columbia and Saskatchewan) and the western United States (primarily Washington, Oregon, and northern and central California but with a few isolated populations in Idaho, Wyoming and Montana).
Document 9: Sparganium natans: Sparganium natans is a species of bur-reed known by the common names least bur-reed and small bur-reed. It is a water plant native to high elevation lakes and marshes of Canada and the northern United States. It is usually found submersed in shallow, calm water. This bur-reed has thin, flexible, grasslike leaves which float in the water. Plants that spend more time out of water at the waterline are tougher and have shorter leaves. The plant bears two inflorescences, the staminate type being a rounded white filamentous ball and the pistillate type a sphere of thick, green, pointy peduncles. The fruits are small green or brown achenes.
Document 10: Alismataceae: The water-plantains (Alismataceae) are a family of flowering plants, comprising 11 genera and between 85 and 95 species. The family has a cosmopolitan distribution, with the greatest number of species in temperate regions of the Northern Hemisphere. Most of the species are herbaceous aquatic plants growing in marshes and ponds.
Document 11: Cyperus alternifolius: Cyperus alternifolius, with the common names of umbrella papyrus, umbrella sedge or umbrella palm, is a grass-like plant in the very large genus "Cyperus" of the sedge family, Cyperaceae.
Document 12: Sparganium americanum: Sparganium americanum, American bur-reed, is a perennial plant found in the United States of America and Canada. Though this species resembles a grass, it is a type of bur-reed. This species is important for conservation purposes because it has the ability to remove nitrogen and phosphorus runoff from water, like many other wetland species. By doing this it protects waterways from excess nitrogen which can cause eutrophication. This increased nitrogen is especially a problem during the farmers’ growing season. During this same time frame the "S. americanum" is growing and taking up nitrogen.
Document 13: Fimbristylis: Fimbristylis is a genus of sedges. A plant in this genus may be known commonly as a fimbry, fimbristyle, or fringe-rush. There are 200 to 300 species distributed worldwide. Several continents have native species but many species have been introduced to regions where they are not native. Some are considered weeds. These are typical sedges in appearance, with stiff, ridged stems and cone-shaped terminal panicles of spikelets. They are found in wet environments, and are most diverse in tropical and subtropical regions.
Document 14: Cyperus tetraphyllus: Cyperus tetraphyllus is a sedge endemic to Australia. This grass like plant is closely related to the papyrus. It grows to 50 cm high. The habitat is eastern Australia in high rainfall areas. Found in and near rainforest from Kiama north to Queensland.
Document 15: Cyperus: Cyperus is a large genus of about 700 species of sedges, distributed throughout all continents in both tropical and temperate regions.
ground_truth: flowering plants