Eragrostis intermedia |
Eragrostis prolifera |
|
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plains lovegrass |
Dominican lovegrass |
|
Habit | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. |
Culms | (30)40-90(110) cm, erect, glabrous below the nodes. |
85-130(150) cm, stiffly erect, glabrous below the nodes. |
Sheaths | sparsely pilose on the margins, apices hairy, hairs to 8 mm, not papillose-based; ligules 0.2-0.4 mm; blades (4)10-20(30) cm long, 1-3 mm wide, flat or involute, abaxial surfaces glabrous, adaxial surfaces densely hairy behind the ligules, elsewhere usually glabrous, occasionally sparsely hairy. |
glabrous or hairy at the apices, hairs to 4 mm; ligules 0.1-0.2 mm; blades 25-50 cm long, 1.5-6 mm wide, flat to involute, glabrous abaxially, scabridulous adaxially, sometimes also with a few scattered hairs near the base. |
Panicles | 15-40 cm long, (8.5)15-30 cm wide, ovate, open; primary branches 4-25 cm, diverging 20-90° from the rachises, capillary; pulvini hairy or glabrous; pedicels 2-14 mm, divergent. |
(10)20-50(60) cm long, 2-8(10) cm wide, narrowly ovate, contracted to open; primary branches mostly 2-14 cm, appressed or diverging up to 50°(90°) from the rachises, spikelets congested near the base of the branches; pulvini glabrous; pedicels 0.3-2.4 mm, appressed, always shorter than the spikelets. |
Spikelets | 3-7 mm long, 1-1.8 mm wide, narrowly lanceolate, olivaceous to purplish, with (3)5-11 florets; disarticulation acropetal, paleas persistent. |
3.2-10(12) mm long, 0.7-1.4 mm wide, linear-lanceolate, stramineous to plumbeous, sometimes with a reddish tinge, with (5)8-25 florets; disarticulation acropetal, glumes first, then the lemmas, paleas persistent. |
Glumes | lanceolate to ovate, hyaline to membranous; lower glumes 1.1-1.7 mm, narrower than the upper glumes; upper glumes 1.3-2 mm, apices acuminate to acute; lemmas 1.6-2.2 mm, ovate, membranous, hyaline near the margins, lateral veins inconspicuous, apices acute; paleas 1.4-2.1 mm, hyaline, narrower than the lemmas, apices obtuse to acute; anthers 3, 0.5-0.8 mm, purplish. |
subequal, ovate to lanceolate, hyaline; lower glumes 1-1.5 mm; upper glumes 1.1-1.6 mm; lemmas 1.1-1.8(2) mm, ovate, membranous, apices acute; paleas 0.8-1.7 mm, hyaline, narrower than the lemmas, apices obtuse to truncate; anthers 2, 0.2-0.3 mm, purplish. |
Caryopses | 0.5-0.9 mm, rectangular-prismatic, somewhat laterally compressed, with a well-developed adaxial groove, striate, opaque, reddish-brown. |
0.6-0.9 mm, ovoid, flattened ventrally, finely striate, reddish-brown. |
2n | = ca. 54, 60, 72, ca. 74, 80, 100, 120. |
= 40. |
Eragrostis intermedia |
Eragrostis prolifera |
|
Distribution |
AL; AR; AZ; CA; FL; GA; KS; LA; MA; ME; MO; MS; NC; NM; OK; SC; TN; TX; VA
|
FL |
Discussion | Eragrostis intermedia grows in clay, sandy, and rocky soils, often in disturbed sites, at 0-1850 m. Its range extends from the United States through Mexico and Central America to South America. Eragrostis intermedia is similar to the more widespread E. lugens, but differs from that species in having wider spikelets, longer lemmas, and caryopses with a prominent adaxial groove. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eragrostis prolifera grows on beaches, in brackish water, and along roadsides, at elevations below 5 m in Florida. Its range extends southward from Florida through Mexico and Central America to Colombia. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 97. | FNA vol. 25, p. 99. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Name authority | Hitchc. | (Sw.) Steud. |
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