Beckmannia syzigachne

(Steud.) Fernald
Common names: American sloughgrass Beckmannie à écailles unies
Synonyms: Beckmannia syzigachne var. uniflora Beckmannia syzigachne subsp. baicalensis
Treatment appears in FNA Volume 24. Treatment on page 486.

Plants annual; tufted. Culms 20-120 cm. Ligules 5-11 mm, pubescent, entire or lacerate, usually folded back; blades 4-10 (20) mm wide, flat, scabrous. Panicles 7-30 cm; branches spikelike, usually 1-2 cm. Spikelets 2-3 mm, round to ovate in side view, with 1 floret, a second undeveloped or well-developed floret occasionally present. Glumes appearing inflated, strongly keeled, 3-veined, apiculate; lemmas 2.4-3.5 mm, unawned, sometimes mucronate; paleas subequal to the lemmas, acute; anthers 0.5-1 (1.5) mm, pale-yellow. Caryopses shorter than 2 mm, light to medium brown. 2n = 14.

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 syzigachne grows in damp habitats such as marshes, floodplains, the edges of ponds, lakes, streams, and ditches, and in standing water. It is a good forage grass, but frequently grows in easily damaged habitats.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Beckmannia syzigachne"
membranous +  and scarious +
1.5 cm15 mm <br />0.015 m <br /> (?) +
pale-yellow +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Stephan L. Hatch +
(Steud.) Fernald +
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 +
4mm;10mm +
spikelike +
American sloughgrass +  and Beckmannie à écailles unies +
20 cm200 mm <br />0.2 m <br /> (120 cm1,200 mm <br />1.2 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 +
well-developed +
sometimes longer +
sterile +  and bisexual +
compressed +
reduced +
shorter or longer +
subtending +
keeled +  and inflated +
subequal +
uncinate +
mucronate +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
lacerate +  and entire +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
membranous +
inconspicuous +
lanceolate +
concealed +  and prominent +
2 +  and 1 +
well-developed +
subequal +
spikelike +
7 cm70 mm <br />0.07 m <br /> (30 cm300 mm <br />0.3 m <br />) +
dry +  and fleshy +
not prolonged +
1 +  and 60 +
round +  and ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Beckmannia syzigachne var. uniflora +  and Beckmannia syzigachne subsp. baicalensis +
Beckmannia syzigachne +
Beckmannia +
species +
membranous +
parallel +  and converging +
aquatic +  and terrestrial +