Flora of North America species comparison

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Eragrostis intermedia

plains lovegrass
Habit Plants perennial; cespitose, with innovations, without rhizomes, not glandular.
Culms

(30)40-90(110) cm, 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.
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.
Spikelets

3-7 mm long, 1-1.8 mm wide, narrowly lanceolate, olivaceous to purplish, with (3)5-11 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.
Caryopses

0.5-0.9 mm, rectangular-prismatic, somewhat laterally compressed, with a well-developed adaxial groove, striate, opaque, reddish-brown.
2n

= ca. 54, 60, 72, ca. 74, 80, 100, 120.

Eragrostis intermedia
Distribution
from FNA
AL; AR; AZ; CA; FL; GA; KS; LA; MA; ME; MO; MS; NC; NM; OK; SC; TN; TX; VA
[WildflowerSearch map]
[BONAP county map]
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.)
Source FNA vol. 25, p. 97.
Parent taxa 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. 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 Hitchc.
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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