Difference between revisions of "Panicum subg. Panicum"
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|accepted_name=Panicum subg. Panicum | |accepted_name=Panicum subg. Panicum | ||
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| − | |discussion=<p>There are approximately 50 species of Panicum subg. Panicum in the Western Hemisphere (Zuloaga 1987), 21 of which grow in the Flora region.</p> | + | |discussion=<p>There are approximately 50 species of <i>Panicum </i>subg.<i> Panicum</i> in the Western Hemisphere (Zuloaga 1987), 21 of which grow in the Flora region.</p> |
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name=Panicum subg. Panicum | name=Panicum subg. Panicum | ||
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|rank=subgenus | |rank=subgenus | ||
|parent rank=genus | |parent rank=genus | ||
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|subfamily=Poaceae subfam. Panicoideae | |subfamily=Poaceae subfam. Panicoideae | ||
|tribe=Poaceae tribe Paniceae | |tribe=Poaceae tribe Paniceae | ||
Latest revision as of 18:56, 11 May 2021
Plants annual or perennial; usually cespitose. Culms usually erect, not compressed. Sheaths not keeled; ligules of hairs, or membranous and, usually, ciliate; blades with vascular bundles separated by 2-6 radially arranged, tabular mesophyll cells and surrounded by a double sheath, cells of the inner sheath thick-walled, cells of the outer sheath with thinner cell walls and usually centripetal chloroplasts; chloroplasts with well-developed grana. Photosynthesis C4 NAD-me type. Panicles usually pyramidal, lax and diffuse, varying to contracted and condensed; secondary branches usually present; pedicels divergent to more or less appressed. Spikelets ellipsoid to lanceolate, glabrous. Lower glumes 1/5 - 4/5 the length of the spikelets, 1-11-veined; upper glumes and lower lemmas (5)7-15-veined; lower florets usually sterile; upper florets smooth, shining; upper paleas with compound or compound and simple papillae towards the apices, x = 9.
Discussion
There are approximately 50 species of Panicum subg. Panicum in the Western Hemisphere (Zuloaga 1987), 21 of which grow in the Flora region.
Selected References
None.