Crypsis alopecuroides

(Piller & Mitterp.) Schrad.
Common names: Foxtail pricklegrass
Introduced
Synonyms: Heleochloa alopecuroides
Treatment appears in FNA Volume 25. Treatment on page 139.

Culms (3) 5-75 cm rarely branched above the base. Sheaths glabrous; collars glabrous; ligules 0.2-1 mm; blades 5-12 cm long, 1.2-2.5 mm wide, not disarticulating. Panicles 1.5-6.5 cm long, 4-6 mm wide, 7-8 times longer than wide, often purplish, completed exserted from the uppermost sheath at maturity on peduncles at least 1 cm long. Spikelets 1.8-2.8 mm, remaining lightly attached until late in the season. Lower glumes 1.2-2 mm; upper glumes 1.4-2.4 mm; lemmas 1.7-2.8 mm; paleas faintly 2-veined; anthers 3, 0.5-0.6 mm. Caryopses 0.9-1.1 mm. 2n = 16.

Distribution

Colo., Wash., B.C., Utah, Calif., Mont., Oreg., Pa., Wyo., Idaho, Nev.

Discussion

Crypsis alopecuroides is common to abundant in sandy soils around drying lake margins in Oregon and southern Washington, and within the last forty years has become widespread in northern California; it is also known from several other western states. It was first collected in the Western Hemisphere in the late 1800s from shipyard areas in and around Philadelphia, but has not been collected in the eastern United States since. In the Eastern Hemisphere, it extends from France and northern Africa to the Urals and Iraq.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Crypsis alopecuroides"
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Barry E. Hammel +  and John R. Reeder +
(Piller & Mitterp.) Schrad. +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not disarticulating +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
pubescent +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
1.2mm;2.5mm +
spikelike +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Foxtail pricklegrass +
erect +  and geniculately ascending +
5 cm50 mm <br />0.05 m <br /> (75 cm750 mm <br />0.75 m <br />) +
not woody +
Colo. +, Wash. +, B.C. +, Utah +, Calif. +, Mont. +, Oreg. +, Pa. +, Wyo. +, Idaho +  and Nev. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
bisexual +  and fertile +
round +  and compressed +
reduced +
shorter or longer +
subtending +
uncinate +
paniculate +  and racemose +
capitate +  and spikelike +
hollow +  and solid +
not absent +
mucronate +, not lobed +  and keeled +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
membranous +
sometimes longer +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
inconspicuous +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
2 +  and 1 +
1.5cm +  and 6.5cm +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1 cm10 mm <br />0.01 m <br /> (?) +
dry +  and fleshy +
spikelike +
inflated +
Introduced +
1 +  and 60 +
compressed +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Heleochloa alopecuroides +
Crypsis alopecuroides +
species +
membranous +
0.14 cm1.4 mm <br />0.0014 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
7 +  and 13 +
aquatic +  and terrestrial +