Eragrostis lugens |
Kalinia obtusiflora(synonym of Eragrostis obtusiflora) |
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mourning lovegrass |
alkali lovegrass |
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Habit | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. | Plants perennial; rhizomatous, sometimes also stoloniferous, with many innovations and scaly, sharp-tipped rhizomes 4-8 mm thick. |
Culms | 30-70 cm, erect, sometimes geniculate, glabrous below the nodes. |
15-40(50) cm, erect, stiff, hard. |
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. |
hairy at the apices, hairs to 2 mm; ligules 0.2-0.4 mm, membranous, ciliate; blades 2-15 cm long, (1)2-4 mm wide, involute, arcuate, glabrous abaxially, scabrous adaxially, apices sharply pointed. |
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, 6-20(24) cm long, 2-8(12) cm wide, ovate, open or contracted; primary branches 1-8(15) cm, appressed or diverging up to 50° from the rachises; pulvini glabrous or not; pedicels 0-8 mm, appressed, lower pedicels on each branch shorter than 1 mm. |
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. |
8-14 mm long, 1.4-3 mm wide, ovate to lanceolate, stramineous with a reddish-purple tinge, with 5-10 florets; disarticulation basipetal, glumes 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. |
unequal, chartaceous; lower glumes 2.4-3.6 mm; upper glumes 3-4.5 mm, sometimes 3-veined; lemmas 3.8-4.5 mm, ovate, leathery, 3(4, 5)-veined, lateral veins evident, greenish, upper margins hyaline, apices acute to obtuse, usually erose; paleas 3.8-4.5 mm, membranous, keels scabridulous, apices obtuse to truncate; anthers 3, 2-2.4 mm, purplish to yellowish. |
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. |
1.6-2 mm, ellipsoid, dorsally flattened, with a shallow adaxial groove, striate, reddish-brown. |
2n | = 40, 80, ca. 108. |
= 40. |
Eragrostis lugens |
Kalinia obtusiflora |
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Distribution |
AL; AR; FL; GA; LA; MO; MS; NC; OK; SC; TN; TX |
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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 obtusiflora is native to the southwestern United States and Mexico. It grows in dry or wet alkali flats, often in association with Distichlis and Sarcobatus, at 900-1400 m. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 95. | FNA vol. 25, p. 89. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Name authority | Nees | (E. Fourn.) Scribn. |
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