Triraphis

R. Br.
Treatment appears in FNA Volume 25. Treatment on page 31.
 TaxonIllustrator 
FNA25 P08B Triraphis pg 32.jpegTriraphis mollisHana Pazdírková
Linda A. Vorobik

Plants annual or perennial; cespitose. Culms (1) 4-140 cm, erect or geniculate at the lower nodes. Leaves cauline; auricles absent; ligules of hairs or membranous and long-ciliate; blades narrow, often involute. Inflorescences terminal, open or contracted (occasionally spikelike) simple panicles, exceeding the leaves. Spikelets laterally compressed, with 3-9 bisexual florets, reduced florets (if present) distal; disarticulation above the glumes and beneath the florets. Glumes subequal, exceeded by the florets, 1-veined; calluses short, bearded; lemmas 3-veined, 3-4-lobed or toothed, lateral-veins pilose or ciliate, midveins glabrous or sparsely pubescent, all 3 veins extending into awns; paleas shorter than the lemmas, 2-veined; lodicules 2; anthers 3. Caryopses trigonous, falling free of the lemmas and paleas; embryos large relative to the caryopses. x = 10.

Discussion

Triraphis is a genus of seven species that are often found in dry, open habitats in sandy or rocky soil. Most of its species are native to Africa and Arabia, but one species is native to Australia. The Australian species is established in the Flora region.

Selected References

None.

Lower Taxa

"decumbent" is not a number.

... more about "Triraphis"
J.K. Wipff +
R. Br. +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
pubescent +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
spikelike +
triangular +  and dome--shaped +
sometimes longer +
membranous +
geniculate +
4 cm40 mm <br />0.04 m <br /> (140 cm1,400 mm <br />1.4 m <br />) +
not woody +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
3 +  and 9 +
round +  and compressed +
reduced +
shorter or longer +
subtending +
subequal +
uncinate +
simple +, contracted +  and open +
paniculate +  and racemose +
hollow +  and solid +
ciliate +  and pilose +
not absent +
toothed +  and 3-4-lobed +
sometimes longer +
membranous +
inconspicuous +
pubescent +  and glabrous +
concealed +  and prominent +
2 +  and 1 +
dry +  and fleshy +
spikelike +
1 +  and 60 +
compressed +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Triraphis +
Poaceae tribe Cynodonteae +
membranous +
7 (?) +  and 13 (?) +
perennial +  and annual +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +