Eragrostis lugens |
Eragrostis scaligera |
|
---|---|---|
mourning lovegrass |
tender lovegrass |
|
Habit | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. |
Culms | 30-70 cm, erect, sometimes geniculate, glabrous below the nodes. |
25-75 cm, erect, glabrous below the nodes. |
Sheaths | usually mostly glabrous, summits hairy, hairs 2-5 mm, never papillose-based; ligules 0.2-0.3 mm; blades (4)8-22 cm long, 1-3.5 mm wide, involute to flat, both surfaces glabrous, margins sometimes with scattered hairs, hairs to 7 mm. |
glabrous or with hairy apices, hairs to 4 mm; ligules 0.1-0.3 mm, ciliate; blades 4-8(18) cm long, 1-2 mm wide, involute, frequently deciduous, adaxial surfaces mostly glabrous, sometimes pilose near the base. |
Panicles | 16-28 cm long, 10-21 cm wide, ovate, open; primary branches 0.6-15 cm, diverging up to 100° from the rachises, naked basally; pulvini hairy; pedicels 1.4-5(7) mm, diverging, wiry, present on all spikelets. |
terminal and axillary; terminal panicles 5-15 cm long, (1)2-10(12) cm wide, narrowly ovate, open; axillary panicles 2-5 cm long, 0.3-0.6 cm wide, usually contracted and partially to completely enclosed by the subtending sheath; primary branches 1-10 cm, appressed or diverging up to 90° from the rachises, wiry; pulvini glabrous or hairy; pedicels 0.3-5 mm, appressed, flattened. |
Spikelets | 2-4.5(5) mm long, 0.5-1(1.3) mm wide, narrowly lanceolate, plumbeous to reddish-purple, with 2-7 florets; disarticulation acropetal, paleas persistent. |
6-15(27) mm long, 1.6-2.4 mm wide, ovate-lanceolate, plumbeous to greenish, often with a reddish-purple tinge, with 10-35(45) florets; disarticulation acropetal, glumes first, then the lemmas, paleas persistent. |
Glumes | broadly ovate to narrowly lanceolate, hyaline, sometimes reddish-purple; lower glumes 0.6-1 mm; upper glumes 1.1-1.4 mm, usually broader than the lower glumes; lemmas 1.2-1.8 mm, broadly ovate, mostly membranous but the distal margins hyaline, lateral veins inconspicuous, apices acute; paleas 1.1-1.7 mm, membranous to hyaline, apices obtuse; anthers 3, 0.2-0.7 mm, reddish-purple. |
lanceolate to ovate, membranous; lower glumes 1.4-2.1 mm; upper glumes 1.6-2.2 mm; lemmas (1.7)2-2.5 mm, broadly ovate, leathery, apices acute to acuminate; paleas 1.1-1.7 mm, hyaline, apices obtuse to truncate; anthers 2, 0.3-0.7 mm, reddish-purple. |
Caryopses | 0.5-0.6 mm, obovoid to somewhat prism-shaped, terete to somewhat laterally compressed, sometimes with a weak adaxial groove, finely striate, usually opaque, faintly reddish-brown to whitish. |
0.5-0.6 mm, globose, not grooved, smooth, light reddish-brown. |
2n | = 40, 80, ca. 108. |
= 40. |
Eragrostis lugens |
Eragrostis scaligera |
|
Distribution |
AL; AR; FL; GA; LA; MO; MS; NC; OK; SC; TN; TX |
FL |
Discussion | Eragrostis lugens grows on sandy dunes and along river banks, at 1-300 m. Its range extends from the southern United States to Peru and Argentina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eragrostis scaligera is known from Lee and Collier counties, Florida, where it grows in sandy areas in the coastal scrub zone and along adjacent roadsides, at 0-10 m. It is native to French Guiana and Brazil. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 95. | FNA vol. 25, p. 101. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Name authority | Nees | Salzm. ex Steud. |
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