Eragrostis obtusiflora

(E. Fourn.) Scribn.
Common names: Alkali lovegrass
Treatment appears in FNA Volume 25. Treatment on page 89.

Plants perennial; rhizomatous, sometimes also stoloniferous, with many innovations and scaly, sharp-tipped rhizomes 4-8 mm thick. Culms 15-40 (50) cm, erect, stiff, hard. Sheaths hairy at the apices, hairs to 2 mm; ligules 0.2-0.4 mm, membranous, ciliate; blades 2-15 cm long, (1) 2-4 mm wide, involute, arcuate, glabrous abaxially, scabrous adaxially, apices sharply pointed. Panicles terminal, 6-20 (24) cm long, 2-8 (12) cm wide, ovate, open or contracted; primary branches 1-8 (15) cm, appressed or diverging up to 50° from the rachises; pulvini glabrous or not; pedicels 0-8 mm, appressed, lower pedicels on each branch shorter than 1 mm. Spikelets 8-14 mm long, 1.4-3 mm wide, ovate to lanceolate, stramineous with a reddish-purple tinge, with 5-10 florets; disarticulation basipetal, glumes persistent. Glumes unequal, chartaceous; lower glumes 2.4-3.6 mm; upper glumes 3-4.5 mm, sometimes 3-veined; lemmas 3.8-4.5 mm, ovate, leathery, 3 (4, 5) -veined, lateral-veins evident, greenish, upper margins hyaline, apices acute to obtuse, usually erose; paleas 3.8-4.5 mm, membranous, keels scabridulous, apices obtuse to truncate; anthers 3, 2-2.4 mm, purplish to yellowish. Caryopses 1.6-2 mm, ellipsoid, dorsally flattened, with a shallow adaxial groove, striate, reddish-brown. 2n = 40.

Discussion

Eragrostis obtusiflora is native to the southwestern United States and Mexico. It grows in dry or wet alkali flats, often in association with Distichlis and Sarcobatus, at 900-1400 m.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Eragrostis obtusiflora"
purplish +  and yellowish +
0.2 cm2 mm <br />0.002 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Obtuse (?) +  and Truncate (?) +
Paul M. Peterson +
(E. Fourn.) Scribn. +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
not +  and glabrous +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
2 cm20 mm <br />0.02 m <br /> (15 cm150 mm <br />0.15 m <br />) +
involute +, folded +  and flat +
2mm;4mm +
not disarticulating +
not spikelike +
pubescent +  and glabrous +
reddish-brown +
flattened +  and ellipsoid +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Alkali lovegrass +
branched +, simple +  and rooting +
geniculate +
15 cm150 mm <br />0.15 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Conn. +, N.J. +, N.Y. +, Md. +, Va. +, Wash. +, W.Va. +, Mich. +, Wis. +, Del. +, D.C +, Ark. +, Kans. +, Minn. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Calif. +, Iowa +, Pacific Islands (Hawaii) +, Alta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Mass. +, Maine +, N.H. +, R.I. +, Vt. +, Fla. +, La. +, Mo. +, N.Mex. +, Tex. +, Wyo. +, Puerto Rico +, Oreg. +, Idaho +, N.C. +, Tenn. +, S.C. +, Ala. +, Virgin Islands +, Pa. +, Miss. +, Nev. +, Colo. +, Ill. +, Ohio +, Utah +, Ga. +, Ind. +, Ariz. +, Mont. +  and Ky. +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
5 +  and 10 +
round +  and compressed +
reduced +
persistent +
shorter or longer +
subtending +
not lobed +
unequal +
uncinate +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
paniculate +  and racemose +
hollow +  and solid +
scabridulous +
not absent +
5 +, 4 +  and 3 +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
sometimes longer +
ciliate +  and ciliolate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
membranous +
inconspicuous +
0.24 cm2.4 mm <br />0.0024 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
concealed +  and prominent +
2 +  and 1 +
persistent +
2-keeled +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
membranous +
6cm +  and 20cm +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
0 cm0 mm <br />0 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
dry +  and fleshy +
15 cm150 mm <br />0.15 m <br /> (?) +
diverging;appressed +
1 cm10 mm <br />0.01 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not +  and glabrous +
spikelike +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
stramineous with a reddish-purple tinge +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
1 +  and 60 +
ovate +  and lanceolate +
1.4mm +  and 3mm +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Eragrostis obtusiflora +
Eragrostis +
species +
membranous +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
7 +  and 13 +
stoloniferous +  and rhizomatous +
aquatic +  and terrestrial +
dioecious +  and synoecious +