Eragrostis intermedia |
Eragrostis cylindriflora |
|
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plains lovegrass |
cylinderflower lovegrass |
|
Habit | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. | Plants annual; cespitose, without innovations. |
Culms | (30)40-90(110) cm, erect, glabrous below the nodes. |
20-70 cm, erect or decumbent, with a ring of glands below the nodes, glabrous. |
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. |
often with oblong glands below the collar, usually glabrous, rarely pilose, hairs to 1.5 mm, papillose-based, sometimes both glandular and with papillose-based hairs; ligules 0.4-0.6 mm; blades 3-15 cm long, 2-4 mm wide, flat to involute, abaxial surfaces glabrous or hairy, hairs to 3 mm, papillose-based. |
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. |
5-22 cm long, 2.6-10 cm wide, open, oblong, usually diffuse; primary branches 2-9 cm, appressed or diverging to 80° from the rachises, lowest branches whorled, naked below; pulvini glabrous or scattered pilose; pedicels 0.8-7 mm, divergent. |
Spikelets | 3-7 mm long, 1-1.8 mm wide, narrowly lanceolate, olivaceous to purplish, with (3)5-11 florets; disarticulation acropetal, paleas persistent. |
2-7 mm long, 1-1.5 mm wide, oblong, plumbeous to greenish-gray, with 3-14 florets; disarticulation acropetal, 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, 1.4-2 mm, narrowly ovate, hyaline; lemmas 1.4-1.7 mm, ovate, membranous, lateral veins inconspicuous, apices obtuse to acute; paleas 1.2-1.6 mm, hyaline, keels scabridulous, apices obtuse; anthers 3, 0.7-1 mm, yellowish. |
Caryopses | 0.5-0.9 mm, rectangular-prismatic, somewhat laterally compressed, with a well-developed adaxial groove, striate, opaque, reddish-brown. |
0.5-1.1 mm, ellipsoid to obovoid, dorsally compressed, with a shallow, broad adaxial groove, smooth, mostly translucent, mostly light brown, bases greenish. |
2n | = ca. 54, 60, 72, ca. 74, 80, 100, 120. |
= unknown. |
Eragrostis intermedia |
Eragrostis cylindriflora |
|
Distribution |
AL; AR; AZ; CA; FL; GA; KS; LA; MA; ME; MO; MS; NC; NM; OK; SC; TN; TX; VA
|
MD |
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 cylindriflora is native to Africa. It is not established in the Flora region, but has been collected from a disturbed site in Canton, Maryland. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 97. | FNA vol. 25, p. 74. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Synonyms | E. horizontalis | |
Name authority | Hitchc. | Hochst. |
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