Calamovilfa gigantea

(Nutt.) Scribn. & Merr.
Common names: Giant sandreed
Endemic
Treatment appears in FNA Volume 25. Treatment on page 141.

Rhizomes elongate, covered with shiny, coriaceous, scalelike leaves. Culms to 2.5 m. Sheaths entirely glabrous or pubescent at the throat; ligules 0.7-2 mm; blades to 90 cm long, about 12 mm wide. Panicles 20-80 cm long, 20-60 cm wide; branches to 35 cm, ascending to strongly divergent, lowermost branches sometimes reflexed. Spikelets 7-10.8 mm. Glumes straight; lower glumes 4.5-10.5 mm; upper glumes 6.4-10.1 mm; callus hairs 1/4 - 3/4 as long as the lemma; lemmas 6-10 mm, straight, pubescent, sometimes sparsely so, very rarely glabrous; paleas 6-8.3 mm, pubescent or glabrous; anthers 3-5.5 mm. 2n = 60.

Distribution

Kans., Okla., Colo., N.Mex., Tex., Utah, Nebr., Ariz.

Discussion

Calamovilfa gigantea grows on sand dunes, prairies, river banks, and flood plains in the Rocky Mountains and central plains from Utah and Nebraska to Arizona and Texas.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Calamovilfa gigantea"
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
John W. Thieret +
(Nutt.) Scribn. & Merr. +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
0 cm0 mm <br />0 m <br /> (90 cm900 mm <br />0.9 m <br />) +
pubescent +  and glabrous +
tapering +  and elongate +
not disarticulating +
not spikelike +
1/4 +  and 3/4 +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Giant sandreed +
ascending +  and erect +
0 cm0 mm <br />0 m <br /> (250 cm2,500 mm <br />2.5 m <br />) +
not woody +
Kans. +, Okla. +, Colo. +, N.Mex. +, Tex. +, Utah +, Nebr. +  and Ariz. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
bisexual +  and fertile +
round +  and compressed +
reduced +
straight +
shorter or longer +
subtending +
subequal +  and unequal +
1/4 +  and 7/8 +
uncinate +
paniculate +  and racemose +
hollow +  and solid +
not absent +
scale-like +
coriaceous +
straight +
glabrous +  and pubescent +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
sometimes longer +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
inconspicuous +
0.45 cm4.5 mm <br />0.0045 m <br /> (1.05 cm10.5 mm <br />0.0105 m <br />) +
concealed +  and prominent +
2 +  and 1 +
glabrous +  and pubescent +
0.6 cm6 mm <br />0.006 m <br /> (0.83 cm8.3 mm <br />0.0083 m <br />) +
simple +  and open +
20cm +  and 80cm +
20 cm200 mm <br />0.2 m <br /> (60 cm600 mm <br />0.6 m <br />) +
dry +  and fleshy +
spikelike +
not prolonged +
pubescent +  and glabrous +
1 +  and 60 +
compressed +
0.7 cm7 mm <br />0.007 m <br /> (1.08 cm10.8 mm <br />0.0108 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Calamovilfa gigantea +
Calamovilfa +
species +
membranous +
0.64 cm6.4 mm <br />0.0064 m <br /> (1.01 cm10.1 mm <br />0.0101 m <br />) +
7 +  and 13 +
aquatic +  and terrestrial +