Polypogon fugax

Nees ex Steud.
Common names: Asian beardgrass
Treatment appears in FNA Volume 24. Treatment on page 663.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants annual. Culms (8.5) 15-60 cm, often decumbent at the base and rooting at the nodes. Sheaths smooth; ligules 2-8 mm; blades 2-16 cm long, 2-11 mm wide, scabrous. Panicles 3-15 cm long, 0.5-5 cm wide, narrowly ovoid, oblong, or cylindrical, dense, usually lobed, pale green or yellowish; pedicels absent or to 0.5 mm; stipes 0.2-1.3 mm. Glumes 1.8-2.4 mm, equal to subequal, scabridulous to echinate, not tapering to the apices, apices acute to rounded, lobed, lobes 0.1-0.2 mm, awned from the sinuses, awns 0.6-3 mm, those of the lower and upper glumes subequal to equal, flexuous; lemmas 0.9-1.2 mm, smooth, unawned or awned, awns to 2 mm, flexuous; paleas 0.7-1.2 mm, from 3/4 as long as to equaling the lemmas; anthers 0.3-0.6 mm. 2n = 42.

Distribution

Pacific Islands (Hawaii)

Discussion

Polypogon fugax is native from Iraq to Myanmar [Burma]. It was collected in Santa Barbara, California, and from salt marshes around Oakland, California, in the nineteenth century, and from Portland, Oregon, in the early twentieth century. There are no recent collections from the Flora region.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Polypogon fugax"
membranous +  and scarious +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
awned +, bilobed +, entire +  and emarginate +
lobed +, acute +  and rounded +
Mary E. Barkworth +
Nees ex Steud. +
1 (?) +  and 3 (?) +
flexuous +
subterminal +  and terminal +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
2 cm20 mm <br />0.02 m <br /> (16 cm160 mm <br />0.16 m <br />) +
not evident +
flat +  and convolute +
0.2 cm2 mm <br />0.002 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
spikelike +
1 cm10 mm <br />0.01 m <br /> (?) +
hairy +  and glabrous +
Asian beardgrass +
erect +  and decumbent +
15 cm150 mm <br />0.15 m <br /> (60 cm600 mm <br />0.6 m <br />) +
not woody +
Pacific Islands (Hawaii) +
1/4 +  and 1/3 +
liquid +, soft +  and hard +
capillary +
pistillate +  and staminate +
sometimes longer +
compressed +
reduced +
shorter or longer +
subtending +
scabridulous +
not tapering +
subequal +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
uncinate +
1/6 +  and 1/4 +
interrupted +  and continuous +
cauline +  and basal +
1-3(5)-veined +
lanceolate +  and ovate +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
acute +  and broadly rounded +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
membranous +
inconspicuous +
oblong-lanceolate +  and lanceolate +
concealed +  and prominent +
2 +  and 1 +
well-developed +
2-keeled +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
yellowish +  and pale green +
3cm +  and 15cm +
lobed +, cylindrical +, oblong +  and ovoid +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
dry +  and fleshy +
not prolonged +
scabridulous +  and smooth +
1 +  and 60 +
compressed +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 +  and 3 +
simple +  and compound +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
2 (?) +  and 3 (?) +
Gramineae +
Polypogon fugax +
Polypogon +
species +
membranous +
parallel +  and converging +
aquatic +  and terrestrial +