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mourning lovegrass

Mediterranean love grass

Habit Plants perennial; cespitose, with innovations, without rhizomes, not glandular. Plants annual; tufted, without innovations.
Culms

30-70 cm, erect, sometimes geniculate, glabrous below the nodes.

(5)10-60 cm, erect or decumbent, much-branched near the base, with a ring of glandular tissue below the nodes, rings often shiny or yellowish.

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 4 mm;

ligules 0.2-0.5 mm, ciliate;

blades 1.5-10 cm long, 1-3(5) mm wide, flat, abaxial surfaces glabrous, adaxial surfaces glabrous, sometimes scabridulous, occasionally with white hairs to 3 mm, margins without crateriform glands.

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.

4-20 cm long, 2.2-8(10) cm wide, ovate, open to contracted, rachises with shiny or yellowish glandular spots or rings below the nodes;

primary branches 0.5-6 cm, diverging 20-100° from the rachises;

pulvini glabrous;

pedicels 1-4 mm, stout, stiff, divergent, without glandular bands.

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.

4-7(11) mm long, 1.1-2.2 mm wide, narrowly ovate, reddish-purple to greenish, occasionally grayish, with 7-12(20) florets;

disarticulation acropetal, 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.

broadly ovate, membranous, 1-veined;

lower glumes 0.9-1.4 mm;

upper glumes 1.2-1.6 mm;

lemmas 1.4-1.8 mm, broadly ovate, membranous, apices acute to obtuse;

paleas 1.3-1.7 mm, hyaline, keels scabrous, scabridities to 0.1 mm, apices obtuse to acute;

anthers 3, 0.1-0.2 mm, reddish-brown.

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.

0.4-0.7 mm, ellipsoid, not grooved, smooth to faintly striate, light brown.

2n

= 40, 80, ca. 108.

= 40.

Eragrostis lugens

Eragrostis barrelieri

Distribution
from FNA
AL; AR; FL; GA; LA; MO; MS; NC; OK; SC; TN; TX
[BONAP county map]
from FNA
AL; AZ; CA; CO; FL; KS; LA; MA; MD; MO; NE; NM; NV; OK; SC; TN; TX; UT; PR; Virgin Islands
[WildflowerSearch map]
[BONAP county map]
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 barrelieri is a European species that is now naturalized in the Flora region, primarily in the south-western United States. It grows on gravelly roadsides, in gardens, and other disturbed, sandy sites, especially near railroad yards, at 10-2000 m. The ring of glandular tissue is most conspicuous below the upper cauline nodes.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 25, p. 95. FNA vol. 25, p. 83.
Parent taxa Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis
Sibling taxa
E. airoides, E. amabilis, E. atrovirens, E. bahiensis, E. barrelieri, E. capillaris, E. cilianensis, E. ciliaris, E. cumingii, E. curtipedicellata, E. curvula, E. cylindriflora, E. echinochloidea, E. elliottii, E. elongata, E. erosa, E. frankii, E. gangetica, E. hirsuta, E. hypnoides, E. intermedia, E. japonica, E. lehmanniana, E. lutescens, E. mexicana, E. minor, E. obtusiflora, E. palmeri, E. pectinacea, E. pilosa, E. plana, E. polytricha, E. prolifera, E. refracta, E. reptans, E. scaligera, E. secundiflora, E. sessilispica, E. setifolia, E. silveana, E. spectabilis, E. spicata, E. superba, E. swallenii, E. tef, E. trichodes, E. trichophora, E. unioloides
E. airoides, E. amabilis, E. atrovirens, E. bahiensis, E. capillaris, E. cilianensis, E. ciliaris, E. cumingii, E. curtipedicellata, E. curvula, E. cylindriflora, E. echinochloidea, E. elliottii, E. elongata, E. erosa, E. frankii, E. gangetica, E. hirsuta, E. hypnoides, E. intermedia, E. japonica, E. lehmanniana, E. lugens, E. lutescens, E. mexicana, E. minor, E. obtusiflora, E. palmeri, E. pectinacea, E. pilosa, E. plana, E. polytricha, E. prolifera, E. refracta, E. reptans, E. scaligera, E. secundiflora, E. sessilispica, E. setifolia, E. silveana, E. spectabilis, E. spicata, E. superba, E. swallenii, E. tef, E. trichodes, E. trichophora, E. unioloides
Name authority Nees Daveau
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