Which of these names is a genus of plant that consists of grass species:  Poa or Gymnocladus?
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Poa Poa is a genus of about 500 species of grasses, native to the temperate regions of both hemispheres. Common names include meadow-grass (mainly in Europe and Asia), bluegrass (mainly in North America), tussock (some New Zealand species), and speargrass. "Poa" (πόα) is Greek for "fodder". "Poa" are members of the Pooideae subfamily of the Poaceae family.
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Gymnocladus Gymnocladus (Neo-Latin, from Greek γυμνὀς, "gymnos", naked + κλάδος, "klados", branch) is a small genus of leguminous trees. The common name coffeetree is used for this genus.
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Parnassia The genus Parnassia, also known as Grass of Parnassus or bog-stars, are plants in the family Celastraceae. The plants occur in arctic and alpine habitats, as well as in dune systems and fens, swamps, wet meadows, open seepage areas, moist woods, and across the Northern Hemisphere. It is actually not a grass, but an herbaceous dicot. The stalk of the plant can reach up to 8 in , the leaves up to 4 in and the petals can be up to 1.4 in wide. The flower has five white petals with light green venation. There are five three-pronged sterile stamens, each tipped with drop-like, false nectaries, which (along with the visual cue of veins) attract pollinating flies and bees.
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Poa arachnifera Poa arachnifera, the Texas bluegrass, is a species of grass.
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Gymnocalycium Gymnocalycium, commonly called chin cactus, is a genus of about 70 South American species of cactus. The genus name "Gymnocalycium" (from Greek, "naked calyx") refers to the flower buds bearing no hair or spines.
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Gymnoascus Gymnoascus is a genus of fungi within the Gymnoascaceae family. The genus, widely distributed in northern temperate areas, contains eight species.
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Sporobolus Sporobolus is a nearly cosmopolitan genus of plants in the grass family.
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Poa macrantha Poa macrantha is a species of grass known by the common names seashore bluegrass and large-flowered sand dune bluegrass. It is native to the west coast of North America from Alaska to northern California, where it grows in sand dunes and other beach habitat.
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Poa arida Poa arida is a species of grass known by the common names plains bluegrass and prairie speargrass. It is native to North America, where it occurs throughout western and central Canada and the central United States. It is most common east of the Continental Divide; specimens west are often misidentifications.
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Pouzolzia Pouzolzia is a genus of flowering plants in the nettle family. There are about 35 species distributed throughout the tropical world. Most are shrubs, and some are herbs. The genus was named for French botanist and plant collector Pierre Marie Casmir de Pouzolz (1785–1858).
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Uniola Uniola is a genus of New World plants in the grass family.
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Phaenospermateae Phaenospermatae is a tribe of grasses, subfamily Pooideae, containing eight genera.
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Hygrochloa Hygrochloa is a genus of Australian plants in the grass family.
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Parodiophyllochloa Parodiophyllochloa ia a genus of Latin American plants in the grass family.
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Paspalum Paspalum is a genus of plants in the grass family.
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Glyceria maxima Glyceria maxima (Hartm.) Holmb. (syn. "G. aquatica" (L.) Wahlenb.; "G. spectabilis" Mert. & W.D.J. Koch; "Molinia maxima" Hartm.; "Poa aquatica" L.), commonly known as Great Manna Grass, Reed Mannagrass, and Reed Sweet-grass, is a species of rhizomatous perennial grasses in the mannagrass genus native to Europe and Western Siberia and growing in wet areas such as riverbanks and ponds. It is highly competitive and invasive and is often considered to be a noxious weed outside its native range.
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Achnatherum Achnatherum is a genus of plants which includes several species of needlegrass. Several needlegrass species have been switched between "Achnatherum" and genus "Stipa"; taxonomy between the two closely related genera is still uncertain.
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Festuca vaginalis Festuca vaginalis is a species of grass in the Poaceae family.
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Pappophorum Pappophorum is a genus of plants in the grass family, native to the Western Hemisphere. Members of the genus are commonly known as pappusgrass.
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Poa leptocoma Poa leptocoma is a species of grass known by the common names marsh bluegrass and western bog bluegrass. It is native to western North America from Alaska to New Mexico, where it grows in subalpine and alpine climates and the Arctic. It is also known from the Kamchatka Peninsula.
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Poaceae Poaceae or Gramineae is a large and nearly ubiquitous family of monocotyledonous flowering plants known as grasses. Poaceae includes the cereal grasses, bamboos and the grasses of natural grassland and cultivated lawns and pasture. Grasses have stems that are hollow except at the nodes and narrow alternate leaves borne in two ranks. The lower part of each leaf encloses the stem, forming a leaf-sheath. With around 780 genera and around 12,000 species, Poaceae are the fifth-largest , following the Asteraceae, Orchidaceae, Fabaceae and Rubiaceae.
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Gymnopogon Gymnopogon (skeletongrass) is a genus of American and Southeast Asian plants in the grass family.