Juncaceae

Belongs within: Poales.Contains: Luzula subgenus Gymnodes, Juncus section Genuini, Juncus section Graminifolii, Juncus section Poiophylli, Juncus section Septati. The Juncaceae are a family of rushes, grass-like plants found mostly in damper habitats in temperate parts of the world (as well as tropical mountains). Flowers are solitary and relatively large (over five millimetres) in members of… Continue reading Juncaceae

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Poaceae

Belongs within: Poales.Contains: Leymus, Aegilops, Austrostipa, Bothriochloa, Urochloa, Pooideae, Bambusoideae, Ehrhartoideae, Centothecoideae, Panicoideae, Eriachneae, Aristidoideae, Danthonioideae, Arundinoideae, Chloridoideae. The Poaceae are the grasses, a distinctive group of monocotyledons that are one of the most significant plant groups alive today. It is estimated that grass-dominated landscapes make up about one-fifth of the terrestrial surface of the… Continue reading Poaceae

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Bromus

Belongs within: Pooideae. Bromus, the bromes or cheatgrasses, is a genus of grasses found primarily in the temperate regions of the Northern Hemisphere. Species such as poverty brome B. sterilis and ripgut brome B. diandrus are considered undesirable in pasture due to their high silica content. Bromus tectorum, drooping brome or cheatgrass, is a native… Continue reading Bromus

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Poa

Belongs within: Pooideae. Poa is a genus of more than 500 species of grasses, including meadow-grasses and bluegrasses, found in temperate regions of both hemispheres as well as on tropical mountains. Notable species include P. annua, annual bluegrass, which is commonly used for lawns and animal fodder. The greater number of species are perennial though… Continue reading Poa

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Aristidoideae

Belongs within: Poaceae.Contains: Aristida adscensionis, Aristida section Chaetaria. The Aristidoideae, wiregrasses, are a group of relatively narrow-leaved grasses most commonly found in dry, open habitats. The central awn-branch is plumose in species of the genus Stipagrostis but glabrous in Aristida. Characters (from Grass Phylogeny Working Group 2001): Plants annual or perennial, caespitose, herbaceous, xerophytic or… Continue reading Aristidoideae

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Digitaria

Belongs within: Paniceae. Digitaria, the crabgrasses, is a genus of grasses producing long, finger-like inflorescences. Hairy crabgrass D. sanguinalis and smooth crabgrass D. ischaemum are regarded as lawn and garden weeds in North America. Characters (from Gardner 1952): Perennials or annuals; leaf-blade linear to linear-lanceolate, usually flat, often more or less flaccid; ligule membranous; inflorescence… Continue reading Digitaria

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Danthonioideae

Belongs within: Poaceae.Contains: Danthonia. The Danthonioideae is a clade of mostly Southern Hemisphere tussocks and pampas grasses, though the type genus Danthonia has a Holarctic distribution. The genus Pentaschistis is found in Africa whereas Austrodanthonia and Chionochloa are Australasian. Danthonioideae are distinguished from other grasses by the presence of haustorial synergids in the ovule. The… Continue reading Danthonioideae

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Panicoideae

Belongs within: Poaceae.Contains: Paniceae, Andropogoneae. The Panicoideae are a clade of over 3200 species of grasses. It is one of the largest grass groups to possess the C4 photosynthetic pathway that is believed to be associated with adaptation for arid climates, though many species have reverted to the more standard C3 pathway. Most panicoids are… Continue reading Panicoideae

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Austrostipa

Soft speargrass Austrostipa mollis, from here. Belongs within: Poaceae. Austrostipa, speargrass, is a genus of grasses mostly endemic to Australasia. One species, A. variabilis, is found in both Australia and southern Africa. Characters (from New South Wales Flora Online): Perennials (rarely annuals) of various habit. Auricles often present, sometimes one-sided, grading into an usually membranous… Continue reading Austrostipa

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Cymbopogon

Belongs within: Andropogoneae. Cymbopogon is a tropical and subtropical genus of densely tufted, often aromatic grasses (Gardner 1952). Lemon grass C. citratus is used as a flavouring agent in cooking. Characters (from Gardner 1952): Perennials, densely tufted, usually aromatic; culms simple or branched; leaf often coarse. Inflorescence of terminal paired racemes supported by a spatheole;… Continue reading Cymbopogon

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