Tribolium

Desv.
Treatment appears in FNA Volume 25. Treatment on page 312.
 TaxonIllustrator 
FNA25 P121 Tribolium pg 313.jpegTribolium obliterumHana Pazdírková
Linda A. Vorobik

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.

"decumbent" is not a number.

... more about "Tribolium"
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
Gerrit Davidse +
1 (?) +  and 3 (?) +
geniculate +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not pseudopetiolate +
villous +  and glabrous +
rolled +  and flat +
spikelike +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
hollow +  and solid +
perennial +  and annual +
ascending +  and erect +
2 cm20 mm <br />0.02 m <br /> (60 cm600 mm <br />0.6 m <br />) +
woody +  and herbaceous +
1/3 +  and 1/2 +
small +  and large +
capillary +
sometimes longer +
2 +  and 5 +
compressed +
acuminate +  and acute +
subtending +
exceeded by the florets +  and exceeding +
scabridulous +
papillose-based +
clavate +  and acute +
spicate +  and ebracteate +
racemose +  and paniculate +
solid +  and hollow +
with non-uncinate hairs +  and glabrous +
acute +  and long-acuminate +
firmly membranous +  and coriaceous +
ciliolate +  and ciliate +
membranous +
setaceous +
inconspicuous +
with bristles +  and glabrous +
obtriangular +
extended +
concealed +  and prominent +
2 +  and 1 +
well-developed +
rugulose +  and smooth +
dry +  and fleshy +
clifford1996a +, linder1997c +  and quattrocchi2000a +
sterile +, bisexual +  and unisexual +
1 +  and 3 +
2 (?) +  and 3 (?) +
Gramineae +
Tribolium +
Poaceae tribe Danthonieae +
long-ciliate +  and glabrous +
membranous +
perennial +  and annual +
plant +  and cespitose +
aquatic +  and terrestrial +