Beckmannia

Host
Treatment appears in FNA Volume 24. Treatment on page 484.

Plants annual and tufted, or perennial and rhizomatous. Culms 20-150 cm, sometimes tuberous at the base, erect. Leaves mostly cauline; sheaths open, glabrous, ribbed; auricles absent; ligules membranous, acute; blades flat, glabrous. Inflorescences dense, spikelike panicles; branches 1-sided, racemosely arranged, secondary branches few, at least some branches longer than 1 cm, with closely imbricate spikelets; disarticulation below the glumes, the spikelets falling entire. Spikelets laterally compressed, circular, ovate or obovate in side view, subsessile, with 1-2 florets; rachillas not prolonged beyond the base of the distal floret. Glumes subequal, slightly shorter than the lemmas, inflated, keeled, D-shaped in side view, unawned; calluses blunt, glabrous; lemmas lanceolate, inconspicuously 5-veined, unawned; paleas subequal to the lemmas; lodicules 2, free; anthers 3; ovaries glabrous. Caryopses shorter than the lemmas, concealed at maturity, x = 7.

Distribution

Wash., Wis., Wyo., N.Mex., N.Y., Pa., Calif., Nev., Colo., Alaska, Ill., Iowa, Ariz., Idaho, N.Dak., Nebr., S.Dak., Maine, Ohio, Utah, Mo., Minn., Mich., Kans., Mont., Alta., B.C., Greenland, Nfld. and Labr. (Nfld.), Man., N.B., N.S., N.W.T., Nunavut, Ont., P.E.I., Que., Sask., Yukon, Oreg.

Discussion

Beckmannia is a genus of two species: an annual species usually with one fertile floret per spikelet that is native to North America and Asia, and a perennial species with two fertile florets per spikelet that is restricted to Eurasia.

"decumbent" is not a number.

... more about "Beckmannia"
membranous +  and scarious +
Stephan L. Hatch +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
cross +, linear +  and narrowly lanceolate +
spikelike +
20 cm200 mm <br />0.2 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
not woody +
Wash. +, Wis. +, Wyo. +, N.Mex. +, N.Y. +, Pa. +, Calif. +, Nev. +, Colo. +, Alaska +, Ill. +, Iowa +, Ariz. +, Idaho +, N.Dak. +, Nebr. +, S.Dak. +, Maine +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +, Kans. +, Mont. +, Alta. +, B.C. +, Greenland +, Nfld. and Labr. (Nfld.) +, Man. +, N.B. +, N.S. +, N.W.T. +, Nunavut +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +  and Oreg. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
1 +  and 2 +
sterile +  and bisexual +
compressed +
reduced +
shorter or longer +
subtending +
d--shaped +, keeled +  and inflated +
subequal +
uncinate +
lanceolate +
membranous +
inconspicuous +
lanceolate +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
subequal +
spikelike +
dry +  and fleshy +
not prolonged +
reeder1953a +
1 +  and 60 +
obovate +, ovate +, circular +  and compressed +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Beckmannia +
Poaceae tribe Poeae +
membranous +
parallel +  and converging +
perennial +  and annual +
aquatic +  and terrestrial +