Scolochloa

Link
Treatment appears in FNA Volume 24. Treatment on page 732.
 TaxonIllustrator 
FNA24 P282B Scolochloa pg 733.jpegScolochloa festucaceaLinda Ann Vorobik

Plants perennial; strongly rhizomatous, rhizomes succulent. Culms 70-200 cm, sometimes rooting at the lower nodes. Sheaths open; auricles absent; ligules membranous, truncate to rounded; blades 4-12 mm wide, flat. Inflorescences terminal, open panicles, some branches longer than 1 cm. Spikelets pedicellate, laterally compressed, with 3-4 florets; rachillas prolonged beyond the base of the distal floret, internodes glabrous or with a few hairs to 0.2 mm long; disarticulation above the glumes, between the florets. Glumes unequal, acute to acuminate, unawned; lower glumes shorter than the adjacent lemma, 1-5-veined; upper glumes usually exceeding, sometimes equaling, the distal floret, 3-7-veined; calluses short, blunt, hairy; lemmas glabrous, rounded, 3-9-veined, veins excurrent, apices indistinctly 3-lobed or toothed, unawned; paleas about as long as the lemmas; lodicules free, glabrous; anthers 3; ovaries with pubescent apices. Caryopses shorter than the lemmas, concealed at maturity, about 2 mm, dorsiventrally compressed, x = 7.

Distribution

Mont., Wyo., Alaska, Minn., Oreg., Kans., Iowa, Alta., B.C., Man., N.W.T., Sask., Yukon, Idaho, N.Dak., Nebr., S.Dak.

Discussion

Scolochloa is a monospecific genus that grows in shallow water and marshes of the temperate regions of North America and Eurasia. In the Flora region, it grows primarily in the northern Great Plains and prairie pothole region, from British Columbia to Manitoba and south through Nebraska and Iowa, with disjunct populations in Alaska, eastern Oregon, Montana, Idaho, and Wyoming. Other outlying populations probably reflect introductions.

"decumbent" is not a number.

... more about "Scolochloa"
membranous +  and scarious +
toothed +  and 3-lobed +
Mary E. Barkworth +
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 +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
spikelike +
1 cm10 mm <br />0.01 m <br /> (?) +
ascending +  and erect +
70 cm700 mm <br />0.7 m <br /> (200 cm2,000 mm <br />2 m <br />) +
not woody +
Mont. +, Wyo. +, Alaska +, Minn. +, Oreg. +, Kans. +, Iowa +, Alta. +, B.C. +, Man. +, N.W.T. +, Sask. +, Yukon +, Idaho +, N.Dak. +, Nebr. +  and S.Dak. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
3 +  and 4 +
sterile +  and bisexual +
compressed +
reduced +
shorter or longer +
subtending +
acute +  and acuminate +
unequal +
0mm +  and 0.2mm +
uncinate +
with a few hairs +  and glabrous +
rounded +
truncate +  and rounded +
membranous +
inconspicuous +
lanceolate +
concealed +  and prominent +
2 +  and 1 +
hairy +  and glabrous +
well-developed +
2-keeled +
spikelike +
dry +  and fleshy +
galatowitsch1994a +  and neckles1985a +
1 +  and 60 +
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 +
Scolochloa +
Poaceae tribe Poeae +
membranous +
parallel +  and converging +
aquatic +  and terrestrial +