Redfieldia flexuosa

(Thurb. ex A. Gray) Vasey
Common names: Blow out- grass
Endemic
Treatment appears in FNA Volume 25. Treatment on page 41.

Culms 50-130 cm. Ligules to 1.5 mm; blades 15-45 cm long, 2-8 mm wide. Panicles 20-50 cm long, 8-25 cm wide. Spikelets (3) 5-8 mm long, 3-5 mm wide. Lower glumes 3-4 mm; upper glumes 3.5-4.5 mm; callus hairs to 1.5 mm; lemmas 4.5-6 mm, glabrous or shortly pubescent, veins glabrous, entire or with 3 minute teeth; paleas glabrous; anthers 2-3.6 mm, yellow to reddish-purple; lodicules 2, truncate. Caryopses oblong, terete. 2n = 25.

Distribution

Colo., N.Mex., Tex., Utah, Kans., N.Dak., Nebr., Okla., S.Dak., Mont., Ill., Ariz., Wyo.

Discussion

Redfieldia flexuosa grows on sandhills and dunes. It is a common and important soil binder in blowout areas. It is only fair livestock forage but, because it grows in areas subject to blowout, this should not be of concern. The only Arizona collection wasmade in 1896; the Washington population was introduced for erosion control.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Redfieldia flexuosa"
yellow +  and reddish-purple +
0.2 cm2 mm <br />0.002 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
with 3 minute teeth +  and entire +
acute +  and attenuate +
Stephan L. Hatch +
(Thurb. ex A. Gray) Vasey +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
15 cm150 mm <br />0.15 m <br /> (45 cm450 mm <br />0.45 m <br />) +
pubescent +  and glabrous +
scabridulous +
usually linear +  and lanceolate occasionally ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
spikelike +
slender +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
terete +  and oblong +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Blow out- grass +
50 cm500 mm <br />0.5 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
not woody +
Colo. +, N.Mex. +, Tex. +, Utah +, Kans. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Mont. +, Ill. +, Ariz. +  and Wyo. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
2 +  and 6 +
sterile +  and bisexual +
round +  and compressed +
reduced +
shorter or longer +
subtending +
unequal +
uncinate +
paniculate +  and racemose +
conical +  and oblong +
hollow +  and solid +
not absent +
pubescent +  and glabrous +
lanceolate +  and falcate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
sometimes longer +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
inconspicuous +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
concealed +  and prominent +
2 +  and 1 +
20cm +  and 50cm +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
capillary +
dry +  and fleshy +
spikelike +
olive-green +  and brownish +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
1 +  and 60 +
ovate +  and obovate +
3mm +  and 5mm +
1 +  and 3 +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Redfieldia flexuosa +
Redfieldia +
species +
membranous +
3-veined +  and 1-veined +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
with 3 minute teeth +  and entire +
7 (?) +  and 13 (?) +
aquatic +  and terrestrial +
vertical +  and horizontal +
dioecious +, monoecious +  and synoecious +
12 +, 10 +, 9 +, 8 +  and 7 +