Alopecurus saccatus

Vasey
Common names: Pacific meadow foxtail
Endemic
Synonyms: Alopecurus howellii
Treatment appears in FNA Volume 24. Treatment on page 786.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants annual; tufted. Culms 12-45 cm, erect or decumbent. Ligules 1.5-5.5 mm, obtuse; blades 4-12 cm long, 1.2-4 mm wide; upper sheaths conspicuously inflated. Panicles 1.5-6.5 cm long, 5.5-13 mm wide, often dense. Glumes 3-5 mm, connate at the base, not dilated, membranous, pubescent, keels not winged, veins ciliate, apices obtuse; lemmas 3-5 mm, connate in the lower 1/3-1/2, glabrous, apices obtuse, awns 6-10 mm, geniculate, exceeding the lemmas by 3-6 mm; anthers 0.7-1.8 mm, yellow to rusty brown. Caryopses 1.5-2 mm. 2n = unknown.

Distribution

Calif., Idaho, Wash., Oreg.

Discussion

Alopecurus saccatus is a native annual that inhabits moist, open meadows, valley plains, and vernal pools, at elevations below 700 m, from Washington to California. Segregates have been treated as species in the past, but the variation between them appears to be continuous, and no habitat differentiation is evident.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Alopecurus saccatus"
membranous +  and scarious +
yellow +  and rusty brown +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
straight +
1/3 (?) +  and 1/2 (?) +
William J. Crins +
1 (?) +  and 3 (?) +
straight +
basal +  and terminal +
geniculate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
midlength +
swelling +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
not evident +
scabrous +  and glabrous +
involute +  and flat +
1.2mm;4mm +
spikelike +
Pacific meadow foxtail +
not branching +
solitary +  and clumped +
decumbent +  and erect +
12 cm120 mm <br />0.12 m <br /> (45 cm450 mm <br />0.45 m <br />) +
not woody +
Calif. +, Idaho +, Wash. +  and Oreg. +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
sterile +  and bisexual +
compressed +
reduced +
shorter or longer +
not dilated +
unequal +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
membranous +
exceeding the florets +  and equaling +
narrowing +
uncinate +
capitate +  and cylindrical +
1-7(9)-veined +
lanceolate +  and ovate +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
membranous +
glabrous +  and puberulent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
membranous +
inconspicuous +
lanceolate +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
reduced +
1.5cm +  and 6.5cm +
spikelike +
0.55 cm5.5 mm <br />0.0055 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
dry +  and fleshy +
not prolonged +
1 +  and 60 +
oval +  and compressed +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 (?) +  and 3 (?) +
simple +  and compound +
2 (?) +  and 3 (?) +
Alopecurus howellii +
Alopecurus saccatus +
Alopecurus +
species +
membranous +
parallel +  and converging +
aquatic +  and terrestrial +