Corynephorus

P. Beauv.
Treatment appears in FNA Volume 24. Treatment on page 742.
 TaxonIllustrator 
FNA24 P286 Corynephorus pg 743.jpegCorynephorus canescensLinda Ann Vorobik
Hana Pazdírková

Plants annual or perennial. Culms to 60 cm, erect. Sheaths open; auricles absent; ligules membranous; blades flat or involute. Inflorescences terminal panicles. Spikelets pedicellate, laterally compressed, with 2 bisexual florets; rachillas prolonged beyond the base of the distal floret, pilose; disarticulation above the glumes, beneath the florets. Glumes subequal, exceeding the florets, lanceolate, membranous, acute, unawned; lower glumes 1-veined; upper glumes 3-veined at the base; calluses pilose; lemmas about 1/2 as long as the glumes, ovatelanceolate, membranous, 1-veined, acute, awned from just above the base, awns geniculate, articulated near the middle, with a ring of minute, conical protuberances near the joint, proximal segment yellowbrown to dark-brown, smooth, thicker than the distal segment, distal segment pale green to whitish, clavate; paleas shorter than the lemmas, membranous; lodicules 2, free, glabrous, toothed; anthers 3; ovaries glabrous. Caryopses shorter than the lemmas, concealed at maturity, usually adhering to the lemmas and/or paleas, longitudinally grooved. x = 7.

Distribution

Maine, N.H., N.J., Mass., Wash., B.C., Mich., N.Y., Pa., Conn.

Discussion

Corynephorus is a Eurasian and North African genus of five species, one of which has been introduced into the Flora region. Flowering specimens are easily recognized by their distinctive awns, but sterile plants, with their involute, glaucous leaves, resemble involute-leaved species of Festuca, such as F. trachyphylla.

"decumbent" is not a number.

... more about "Corynephorus"
membranous +  and scarious +
John W. Thieretf +
P. Beauv. +
articulated +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
geniculate +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
not evident +
involute +  and flat +
spikelike +
not branching +
0 cm0 mm <br />0 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Maine +, N.H. +, N.J. +, Mass. +, Wash. +, B.C. +, Mich. +, N.Y. +, Pa. +  and Conn. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
compressed +
reduced +
shorter or longer +
subtending +
acute +  and lanceolate +
subequal +
membranous +
uncinate +
acute +  and ovatelanceolate +
membranous +
membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
membranous +
spikelike +
dry +  and fleshy +
albers1973a +, douglas1994a +  and jirasek1962a +
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 +
Corynephorus +
Poaceae tribe Poeae +
membranous +
parallel +  and converging +
stoloniferous +  and rhizomatous +
perennial +  and annual +
aquatic +  and terrestrial +