Dasyochloa

Willd. ex Rydb.
Treatment appears in FNA Volume 25. Treatment on page 45.

Plants perennial; stoloniferous, sometimes mat-forming. Culms (1) 4-15 cm, initially erect, event¬ually bending and rooting at the base of the inflorescence. Leaves not basally aggregated on the primary culms; sheaths with a tuft of hairs to 2 mm at the throat; ligules of hairs; blades involute. Inflorescences terminal, short, dense panicles of spikelike branches, each subtended by leafy bracts and exceeded by the upper leaves; branches with 2-4 subsessile to shortly pedicellate spikelets. Spikelets laterally compressed, with 4-10 florets; disarticulation above the glumes. Glumes subequal to the adjacent lemmas, glabrous, 1-veined, rounded or weakly keeled, shortly awned to mucronate; florets bisexual; lemmas rounded or weakly keeled, densely pilose on the lower 1/2 and on the margins, thinly membranous, 3-veined, 2-lobed, lobes about 1/2 as long as the lemmas and obtuse, midveins extending into awns as long as or longer than the lobes, lateral-veins not excurrent; paleas about as long as the lemmas; anthers 3. Caryopses oval in cross-section, translucent; embryos more than 1/2 as long as the caryopses. x = 8.

Distribution

Md., Colo., N.Mex., Tex., Utah, Calif., Wyo., Ariz., Nev.

Discussion

Dasyochloa is a monotypic genus that is restricted to the United States and Mexico. It has been included in the past in each of the following: Triodia, Tridens, and Erioneuron. Dasyochloa differs from all three of these genera, but resembles Munroa, in its leafy-bracteate inflorescence (Caro 1981). Seedlings of Dasyochloa, like those of Erioneuron, are shaggy-white-villous. This indumentum is composed of myriads of hairlike, water soluble crystals that wash off in water. They are the product of transpiration and evaporation.

"decumbent" is not a number.

... more about "Dasyochloa"
Jesus Valdes-Reyna +
Willd. ex Rydb. +
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 +
bending +  and erect +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
not woody +
Md. +, Colo. +, N.Mex. +, Tex. +, Utah +, Calif. +, Wyo. +, Ariz. +  and Nev. +
/2 +  and 1 +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
4 +  and 10 +
round +  and compressed +
reduced +
shorter or longer +
subtending +
weakly keeled shortly awned +  and mucronate +
subequal +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
not absent +
2-lobed +, keeled +  and rounded +
membranous +
sometimes longer +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
dry +  and fleshy +
spikelike +
caro1981a +, sanchez1983a +  and valdes-reyna1997a +
subsessile +  and shortly pedicellate +
compressed +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Dasyochloa +
Poaceae tribe Cynodonteae +
membranous +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
7 +  and 13 +
plant +  and mat-forming +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +