Cynosurus cristatus

L.
Common names: Crested dogtail Cynosure accrêté Crételle des prés
Treatment appears in FNA Volume 24. Treatment on page 685.
Please click on the illustration for a higher resolution version.
Illustrator: Sandy Long

Copyright: Utah State University

Plants perennial; cespitose, not rhizomatous. Culms (5) 15-75 (90) cm. Sheaths smooth, glabrous; ligules 0.5-2.5 mm, truncate, erose or ciliolate; blades 3-15 (19) cm long, 0.5-2 (4.3) mm wide, glabrous or pubescent. Panicles (1) 3.5-14 cm long, 0.4-1 cm wide, linear, spikelike, unilateral. Spikelets 3-7 mm, subsessile or shortly pedicellate, pedicels to 1 mm. Sterile spikelets strongly laterally compressed, with 6-11 (18) florets; glumes and lemmas similar, linear-lanceolate, keeled, keels ciliate, apices acuminate to awned, awns to 1 mm. Fertile spikelets with 2-5 florets, glumes and lemmas dissimilar; glumes 2.8-5.1 mm long, 0.6-0.9 mm wide, 1-veined, laterally compressed, hyaline, keeled, acute; rachilla internodes 0.4-0.6 mm; lemmas 3-4.5 mm long, 0.6-1.1 mm wide, dorsally compressed, membranous to subcoriaceous, not keeled, margins hyaline, ciliolate, apices obtuse to acute, unawned or awned, awns to 3 mm; anthers 1.8-3 mm. 2n = 14.

Distribution

Mont., Oreg., Conn., N.J., N.Y., Wash., Del., Wis., W.Va., N.H., N.C., Tenn., Pa., R.I., B.C., Nfld. and Labr. (Labr.), N.S., Ont., Que., Va., Colo., Calif., Vt., Idaho, Maine, Md., Mass., Ohio, Mich.

Discussion

Cynosurus cristatus is a European native that is now established in North America. It grows in a wide range of soils in dry or damp habitats. In Europe it is used for fodder and pasture, especially for sheep, but in North America it is regarded as a weedy species. It is self-incompatible.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Cynosurus cristatus"
membranous +  and scarious +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Obtuse (?) +  and Acute (?) +
Sandy Long +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
not evident +
pubescent +  and glabrous +
cross +, linear +  and narrowly lanceolate +
0.5mm;2mm +
almost +  and glabrous +
scabridulous +
spikelike +
Crested dogtail +, Cynosure accrêté +  and Crételle des prés +
not branching +
15 cm150 mm <br />0.15 m <br /> (75 cm750 mm <br />0.75 m <br />) +
not woody +
Mont. +, Oreg. +, Conn. +, N.J. +, N.Y. +, Wash. +, Del. +, Wis. +, W.Va. +, N.H. +, N.C. +, Tenn. +, Pa. +, R.I. +, B.C. +, Nfld. and Labr. (Labr.) +, N.S. +, Ont. +, Que. +, Va. +, Colo. +, Calif. +, Vt. +, Idaho +, Maine +, Md. +, Mass. +, Ohio +  and Mich. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
2 +  and 5 +
sterile +  and bisexual +
compressed +
reduced +  and narrow +
2.8mm +  and 5.1mm +
shorter or longer +
subtending +
2 +  and 5 +
acute +, keeled +, compressed +  and linear-lanceolate +
subequal +
0.6mm +  and 0.9mm +
uncinate +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
1/5 +  and 1/2 +
Oblong (?) +  and Linear (?) +
globose +, linear to almost +  and spikelike +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
pubescent +  and glabrous +
2 +  and 5 +
not keeled +, compressed +, keeled +  and linear-lanceolate +
membranous +  and subcoriaceous +
0.6mm +  and 1.1mm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
3.5cm +  and 14cm +
spikelike +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
scabridulous +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
dry +  and fleshy +
pedicellate +  and subsessile +
adaxial +  and concealing +
1 +  and 60 +
fertile +  and sterile +
compressed +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Gramineae +
Cynosurus cristatus +
Cynosurus +
species +
membranous +
parallel +  and converging +
plant +  and cespitose +
aquatic +  and terrestrial +