Eragrostis pilosa |
Eragrostis lehmanniana |
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eragrostide poilue, India lovegrass, Indian love grass |
Lehmann lovegrass, Lehmann's love grass |
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Habit | Plants annual; tufted, without innovations. | Plants perennial; cespitose, forming innovations at the basal nodes, without glands. | ||||
Culms | 8-45(70) cm, erect or geniculate, glabrous, occasionally with a few glandular depressions. |
(20)40-80 cm, erect, commonly geniculate, sometimes rooting at the lower nodes, glabrous, lower portions sometimes scabridulous. |
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Sheaths | mostly glabrous, occasionally glandular, apices hirsute, hairs to 3 mm; ligules 0.1-0.3 mm, ciliate; blades 2-15(20) cm long, 1-2.5(4) mm wide, flat, abaxial surfaces glabrous, occasionally with glandular pits along the midrib, adaxial surfaces scabridulous. |
sometimes shortly silky pilose basally, hairs less than 2 mm, apices sparsely hairy, hairs to 3 mm; ligules 0.3-0.5 mm, ciliate; blades 2-12 cm long, 1-3 mm wide, flat to involute, glabrous, abaxial surfaces sometimes scabridulous, adaxial surfaces scabridulous. |
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Panicles | 4-20(28) cm long, 2-15(18) cm wide, ellipsoid to ovoid, diffuse; primary branches 1-10 cm, diverging 10-80°(110°) from the rachises, capillary, whorled on the lowest 2 nodes, rarely glandular; pulvini glabrous or hairy; pedicels 1-10 mm, flexible, appressed or divergent. |
7-18 cm long, 2-8 cm wide, oblong, open; primary branches 1-8 cm, appressed or diverging to 40° from the rachises; pulvini glabrous; pedicels 0.5-4 mm, diverging or appressed, flexible. |
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Spikelets | (2)3.5-6(10) mm long, 0.6-1.4 mm wide, linear-oblong to narrowly ovate, plumbeous, with (3)5-17 florets; disarticulation acropetal, paleas tardily deciduous, rachillas persisting longer than the paleas. |
5-12(14) mm long, 0.8-1.2 mm wide, linear-lanceolate, plumbeous to stramineous, with 4-12(14) florets; disarticulation irregular to basipetal, paleas usually persistent. |
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Glumes | narrowly ovate to lanceolate, hyaline; lower glumes 0.3-0.6(0.8) mm; upper glumes 0.7-1.2(1.4) mm; lemmas 1.2-1.8(2) mm, ovate-lanceolate, membranous to hyaline, grayish-green proximally, reddish-purple distally, lateral veins inconspicuous, apices acute; paleas 1-1.6 mm, membranous to hyaline, keels scabridulous to scabrous, apices obtuse; anthers 3, 0.2-0.3 mm, purplish. |
oblong to lanceolate, membranous; lower glumes 1-1.5 mm; upper glumes 1.3-2 mm; lemmas 1.5-1.7 mm, ovate, membranous, lateral veins inconspicuous, apices acute to obtuse; paleas 1.4-1.7 mm, obtuse; anthers 3, 0.6-0.9 mm, yellowish. |
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Caryopses | 0.5-1 mm, obovoid to prism-shaped, adaxial surfaces flat, smooth to faintly striate, light brown. |
0.6-0.8 mm, ellipsoid to obovoid, dorsally compressed, sometimes with a shallow adaxial groove, smooth, translucent, mostly light brown, embryo region dark brown with a greenish ring. |
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2n | = 40. |
= 40, 60. |
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Eragrostis pilosa |
Eragrostis lehmanniana |
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Distribution |
AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; VA; VT; WA; WI; WV; WY; HI; PR; BC; NS; ON; QC; Virgin Islands
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AZ; CA; NM; OK; TX; UT
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Discussion | Eragrostis pilosa is native to Eurasia but has become naturalized in many parts of the world. In the Flora region, it grows in forest margins and disturbed sites such as roadsides, railroad embankments, gardens, and cultivated fields, at 0-2500 m. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eragrostis lehmanniana is native to southern Africa, where it grows in sandy, savannah habitats. It was introduced for erosion control in the southern United States, where it often displaces native species. In the Flora region, it grows in sandy flats, along roadsides, on calcareous slopes, and in disturbed areas, at 200-1830 m. It is commonly found in association with Larrea tridentata, Opuntia, Quercus, Juniperus, and Bouteloua gracilis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 25, p. 81. | FNA vol. 25, p. 76. | ||||
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | E. peregrina, E. perplexa, E. multicaulis | |||||
Name authority | (L.) P. Beauv. | Nees | ||||
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