Flora of North America species comparison

15-60 cm, erect, usually not branching from the upper nodes;

nodes 3-4.

10-30 cm, decumbent and rooting at the lower nodes.

glabrous or sparsely pubescent;

ligules 0.6-2.5 mm;

blades 1.5-9 cm long, 3-5 mm wide, glabrous, with papillose-based hairs basally.

conspicuously and densely hairy, longer hairs 1.5-2.5 mm, papillose-based, shorter hairs about 0.5 mm, not papillose-based;

ligules 1.5-2.5 mm;

blades 2-9 cm long, 3-8 mm wide, conspicuously hairy on both surfaces, longer hairs 1.5-2.5 mm, papillose-based, shorter hairs about 0.5 mm, not papillose-based.

with 2-7 spikelike primary branches in 1-2 verticils;

primary branches 3-12 cm, erect to ascending, axes 0.6-1 mm wide, wing-margined, wings at least 1/2 as wide as the midribs, lower and middle portions of the branches bearing spikelets in groups of 3(4, 5);

secondary branches rarely present;

axillary inflorescences absent.

with 2-9 spikelike primary branches, digitate or on rachises to 4 cm;

primary branch axes 3-10 cm, wing-margined, wings wider than the midribs, lower and middle portions bearing spikelets in groups of 3;

secondary branches rarely present;

shortest pedicels 0.5-0.8 mm;

midlength pedicels 1.5-2 mm;

longest pedicels 3-3.5 mm, adnate to the branch axes basally.

1.2-1.7 mm, homomorphic, narrowly elliptic.

homomorphic, 1.5-1.8 mm, lanceolate.

absent or a veinless, membranous rim;

upper glumes 1.2-1.4 mm, 1/2 as long as to almost equaling the upper lemmas, 3-veined, appressed-pubescent, hairs minutely verrucose;

lower lemmas 1.2-1.7 mm, 5-7-veined, veins equally spaced, region between the 2 inner lateral veins and the margins appressed-pubescent, hairs 0.3-0.5 mm, smooth or minutely verrucose (use 50x magnification), verrucose hairs most abundant near the lemma bases;

upper lemmas light brown when immature, dark brown at maturity;

anthers 0.4-0.6 mm.

absent;

upper glumes 1/6-1/3 as long as the spikelets, margins and apices with appressed white hairs, hairs about 0.3 mm;

lower lemmas 7-veined, veins equally spaced, appressed-pubescent between the inner lateral veins and on the margins, hairs 0.3-0.5 mm, minutely verrucose (use 50x magnification);

upper lemmas yellow or tan at maturity.

= 36.

- unknown.