Difference between revisions of "Tribolium"

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|distribution=Calif.
 
|distribution=Calif.
|discussion=<p>Tribolium is a southern African genus of 10 species. It is unusual in the tribe in having unlobed lemmas, but has the haustorial synergids, bilobed or bi-awned prophylls, and stalked ovaries characteristic of the tribe. Linder and Davidse (1997) suggested that its closest relatives are probably Schismus, Karroochloa, and Rytidosperma.</p>
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|discussion=<p><i>Tribolium</i> is a southern African genus of 10 species. It is unusual in the tribe in having unlobed lemmas, but has the haustorial synergids, bilobed or bi-awned prophylls, and stalked ovaries characteristic of the tribe. Linder and Davidse (1997) suggested that its closest relatives are probably <i>Schismus</i>, <i>Karroochloa</i>, and <i>Rytidosperma</i>.</p>
 
|tables=
 
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|publication year=
 
|publication year=
 
|special status=
 
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/314eb390f968962f596ae85f506b4b3db8683b1b/coarse_grained_fna_xml/V25/V25_979.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V25/V25_979.xml
 
|subfamily=Poaceae subfam. Danthonioideae
 
|subfamily=Poaceae subfam. Danthonioideae
 
|tribe=Poaceae tribe Danthonieae
 
|tribe=Poaceae tribe Danthonieae

Revision as of 20:39, 16 December 2019

Plants annual or perennial; cespitose, sometimes stoloniferous, occasionally with rhizomes. Culms 2-60 cm. Sheaths open, throats glabrous or long-ciliate; ligules of hairs, or membranous and ciliate, or ciliolate; blades flat or rolled, glabrous or villous. Inflorescences terminal, sometimes also axillary, panicles, spikes, or racemes. Spikelets with 2-5(10) florets, distal florets reduced; disarticulation above the glumes and between the florets. Glumes exceeding or exceeded by the florets, herbaceous, 3-5-veined, glabrous or scabridulous, sometimes with stiff, papillose-based hairs, glume apices acute or acuminate; calluses glabrous; lemmas herbaceous, with acute or clavate hairs in marginal rows or variously scattered, lemma apices unlobed, acute to long-acuminate; paleas sometimes with tufts of hairs on the margins; lodicules 2, obtriangular, glabrous or with bristles, 1-3-veined, lodicule apices at least as thick as the base; anthers 3, 0.3-3.1 mm. Caryopses 0.7-2.2 mm long, 0.4-1.1 mm wide; pericarp poorly separable, dull, smooth or rugulose, glabrous; embryos 1/3 – 1/2 as long as the caryopses; hila punctiform. x = 6.

Discussion

Tribolium is a southern African genus of 10 species. It is unusual in the tribe in having unlobed lemmas, but has the haustorial synergids, bilobed or bi-awned prophylls, and stalked ovaries characteristic of the tribe. Linder and Davidse (1997) suggested that its closest relatives are probably Schismus, Karroochloa, and Rytidosperma.