Eragrostis hypnoides |
Eragrostis palmeri |
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creeping love grass, teal love grass, teel lovegrass, éragrostide hypnoide |
Rio Grande lovegrass |
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Habit | Plants annual; stoloniferous, mat-forming, without innovations, without glands. | Plants perennial; cespitose, with innovations and knotty bases, without rhizomes, not glandular. |
Culms | decumbent and rooting at the lower nodes, erect portion (2)5-12(20) cm, often branched, glabrous or hairy on the lower internodes. |
50-90(120) cm, glabrous below the nodes. |
Sheaths | pilose on the margins, collars, and at the apices, hairs 0.1-0.6 mm; ligules 0.3-0.6 mm; blades 0.5-2.5 cm long, 1-2 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces appressed pubescent, hairs about 0.2 mm. |
villous and the hairs not papillose-based, or mostly glabrous, apices hairy, hairs to 5 mm, not papillose-based; ligules 0.2-0.4 mm; blades (14)20-35 cm long, 1-2.4 mm wide, involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, sometimes sparsely hairy. |
Panicles | terminal and axillary, 1-3.5 cm long, 0.7-2.5 cm wide, ovate, open to somewhat congested; primary branches 0.1-0.5 cm, appressed to strongly divergent, glabrous; pulvini sparsely pilose or glabrous; pedicels 0.2-1 mm, ciliate. |
12-40 cm long, 4-20 cm wide, oblong, open; primary branches 2-20 cm, diverging 20-70° from the rachises, capillary; pulvini glabrous or sparsely hairy; pedicels (0.4)1-4(14) mm, appressed or diverging, only the terminal pedicels on each branch longer than 4 mm. |
Spikelets | 4-13 mm long, 1-1.5 mm wide, linear-oblong, often arcuate, loosely imbricate, greenish-yellow to purplish, with 12-35 florets; disarticulation acropetal, paleas persistent. |
4-6(7.3) mm long, 1-2 mm wide, linear-lanceolate, plumbeous, with 5-12 florets; disarticulation acropetal, paleas persistent. |
Glumes | linear-lanceolate to lanceolate, hyaline; lower glumes 0.4-0.7 mm; upper glumes 0.8-1.2 mm; lemmas 1.4-2 mm, ovate, strongly 3-veined, veins greenish, apices acuminate; paleas 0.7-1.2 mm, hyaline, keels scabridulous, apices acute to obtuse; anthers 2, 0.2-0.3 mm, brownish. |
lanceolate to ovate, hyaline; lower glumes 1.1-1.8 mm; upper glumes 1.2-2.2 mm, exceeded by the basal lemmas; lemmas 2-2.6 mm, ovate, membranous, hyaline towards the apices and margins, keels weak or strong, without glands, lateral veins from inconspicuous to conspicuous, apices acute; paleas 1.7-2.4 mm, hyaline, bases not projecting beyond the lemmas, apices truncate, often notched; anthers 3, 0.6-1.3 mm, yellowish to purplish. |
Caryopses | 0.3-0.5 mm, ellipsoid, somewhat translucent, light brown. |
0.6-0.8 mm, rectangular-prismatic to subellipsoid, laterally compressed, with a well-developed adaxial groove, faintly striate, opaque, reddish-brown. |
2n | = 20. |
= 40. |
Eragrostis hypnoides |
Eragrostis palmeri |
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Distribution |
AL; AR; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; PR; MB; ON; QC; SK
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NM; TX |
Discussion | Eragrostis hypnoides grows along muddy or sandy shores of lakes and rivers and in moist, disturbed sites, at 10-1600 m. It is native to the Americas, extending from southern Canada to Argentina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eragrostis palmeri grows on rocky slopes and hills between 300-2150 m, generally in association with Pinus edulis, Juniperus monosperma, Bouteloua gracilis, and Prosopis. Its range extends from the southwestern United States into Mexico. It resembles E. erosa, but differs in its shorter lemmas and caryopses. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 72. | FNA vol. 25, p. 93. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Synonyms | E. weigeltiana | |
Name authority | (Lam.) Britton, Sterns & Poggenb. | S. Watson |
Web links |
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