Calamovilfa longifolia

(Hook.) Scribn.
Common names: Prairie sandreed
Endemic
Synonyms: Ammophila longifolia
Treatment appears in FNA Volume 25. Treatment on page 141.

Rhizomes elongate, covered with shiny, coriaceous, scalelike leaves. Culms to 2.4 m. Sheaths glabrous to densely pubescent; ligules 0.7-2.5 mm; blades to 64 cm long, about 12 mm wide. Panicles 15-78 cm long, 1.7-26.4 cm wide; branches to 33 cm, erect to strongly divergent, lowermost branches sometimes reflexed. Spikelets 5-8.5 mm. Glumes straight; lower glumes 3.5-6.5 mm; upper glumes 5-8.2 mm; lemmas 4.5-7.1 mm, straight, glabrous; paleas 4.4-6.9 mm, glabrous. 2n = 40, ca. 60.

Distribution

Ill., Ind., Colo., N.Mex., Wash., Mont., Alta., B.C., Man., Ont., Sask., Minn., Mich., Iowa, Idaho, Kans., Mo., N.Dak., Nebr., Pa., S.Dak., Wyo., Wis., N.Y., Ohio

Discussion

Calamovilfa longifolia usually grows in sand or sandy soils, but is occasionally found in clay soils or loess. Two geographically contiguous varieties exist. They differ as shown in the following key; the differences between the two are more striking in the field.

Selected References

None.

Key

1 Most spikelets overlapping no more than 1 other spikelet, usually with a brownish cast Calamovilfa longifolia var. magna
1 Most spikelets overlapping 2-3 other spikelets, usually without a brownish cast Calamovilfa longifolia var. longifolia

"decumbent" is not a number.

... more about "Calamovilfa longifolia"
0.24 cm2.4 mm <br />0.0024 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
John W. Thieret +
(Hook.) Scribn. +
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 /> (64 cm640 mm <br />0.64 m <br />) +
pubescent +  and glabrous +
tapering +  and elongate +
not disarticulating +
not spikelike +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Prairie sandreed +
ascending +  and erect +
0 cm0 mm <br />0 m <br /> (240 cm2,400 mm <br />2.4 m <br />) +
not woody +
Ill. +, Ind. +, Colo. +, N.Mex. +, Wash. +, Mont. +, Alta. +, B.C. +, Man. +, Ont. +, Sask. +, Minn. +, Mich. +, Iowa +, Idaho +, Kans. +, Mo. +, N.Dak. +, Nebr. +, Pa. +, S.Dak. +, Wyo. +, Wis. +, N.Y. +  and Ohio +
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 +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.71 cm7.1 mm <br />0.0071 m <br />) +
sometimes longer +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
inconspicuous +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
concealed +  and prominent +
2 +  and 1 +
0.44 cm4.4 mm <br />0.0044 m <br /> (0.69 cm6.9 mm <br />0.0069 m <br />) +
simple +  and open +
15cm +  and 78cm +
1.7 cm17 mm <br />0.017 m <br /> (26.4 cm264 mm <br />0.264 m <br />) +
dry +  and fleshy +
spikelike +
not prolonged +
glabrous +  and densely pubescent +
1 +  and 60 +
compressed +
0.5 cm5 mm <br />0.005 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Ammophila longifolia +
Calamovilfa longifolia +
Calamovilfa +
species +
membranous +
0.5 cm5 mm <br />0.005 m <br /> (0.82 cm8.2 mm <br />0.0082 m <br />) +
7 +  and 13 +
aquatic +  and terrestrial +