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stink grass, stinking lovegrass, éragrostide fétide

eragrostide pecttnee, tuft love grass

Habit Plants annual; tufted, without innovations. Plants annual; tufted, without innovations, without glandular pits.
Culms

15-45(65) cm, erect or decumbent, sometimes with crateriform glands below the nodes.

10-80 cm, erect to geniculate or decumbent below, glabrous.

Sheaths

glabrous, occasionally glandular, apices hairy, hairs to 5 mm;

ligules 0.4-0.8 mm, ciliate;

blades (1)5-20 cm long, (1)3-5(10) mm wide, flat to involute, abaxial surfaces glabrous, sometimes glandular, adaxial surfaces scabridulous, occasionally also hairy.

hirsute at the apices, hairs to 4 mm;

ligules 0.2-0.5 mm;

blades 2-20 cm long, 1-4.5 mm wide, flat to involute, abaxial surfaces glabrous and smooth, adaxial surfaces scabridulous.

Panicles

(3)5-16(20) cm long, 2-8.5 cm wide, oblong to ovate, condensed to open;

primary branches 0.4-5 cm, appressed or diverging 20-80° from the rachises;

pulvini glabrous or hairy;

pedicels 0.2-3 mm, stout, straight, stiff, usually divergent, occasionally appressed.

5-25 cm long, 3-12(15) cm wide, ovoid to pyramidal, usually open, sometimes contracted;

primary branches 0.6-8.5 cm, appressed or diverging to 80° from the rachises, solitary or paired at the lowest 2 nodes;

pulvini glabrous or sparsely hairy;

pedicels 1-7 mm, flexible, appressed to widely divergent, sometimes capillary.

Spikelets

6-20 mm long, 2-4 mm wide, ovate-lanceolate, plumbeous, greenish, with 10-40 florets;

disarticulation below the florets, each floret falling as a unit, rachillas persistent.

3.5-11 mm long, 1.2-2.5 mm wide, linear-oblong to narrowly lanceolate, plumbeous, yellowish-brown, or dark reddish-purple, with 6-22 florets;

disarticulation acropetal, paleas persistent.

Glumes

broadly ovate to lanceolate, membranous, usually glandular;

lower glumes 1.2-2 mm, usually 1-veined;

upper glumes 1.2-2.6 mm, often 3-veined;

lemmas 2-2.8 mm, broadly ovate, membranous, keels with 1-3 crateriform glands, apices obtuse to acute;

paleas 1.2-2.1 mm, hyaline, keels scabrous, sometimes also ciliate, cilia to 0.3 mm, apices obtuse to acute;

anthers 3, 0.2-0.5 mm, yellow.

subulate to ovate-lanceolate, hyaline;

lower glumes 0.5-1.5 mm, at least 1/2 as long as the adjacent lemmas;

upper glumes 1-1.7 mm, usually broader than the lower glumes;

lemmas 1-2.2 mm, ovate-lanceolate, hyaline to membranous, grayish-green proximally, reddish-purple distally, lateral veins moderately conspicuous, apices acute;

paleas 1-2 mm, hyaline to membranous, keels scabridulous, apices obtuse;

anthers 3, 0.2-0.7 mm, purplish.

Caryopses

0.5-0.7 mm, globose to broadly ellipsoid, smooth to faintly striate, not grooved, reddish-brown or translucent.

0.5-1.1 mm, pyriform, slightly laterally compressed, smooth, faintly striate, brownish.

2n

= 20.

= 60.

Eragrostis cilianensis

Eragrostis pectinacea

Distribution
from FNA
AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; HI; AB; BC; MB; NS; ON; QC; SK
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; HI; PR; BC; NB; NS; ON; QC; Virgin Islands
[WildflowerSearch map]
[BONAP county map]
Discussion

Eragrostis cilianensis is an introduced European species that now grows in disturbed sites such as pastures and roadsides, at 0-2300 m, through most of the contiguous United States and southern Canada. The English name refers to the odor of fresh plants.

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

Eragrostis pectinacea is native from southern Canada to Argentina. In the Flora region, it grows in disturbed sites such as roadsides, railroad embankments, gardens, and cultivated fields, at 0-1200 m.

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

Key
1. Anthers 0.5-0.7 mm long
var. tracyi
1. Anthers 0.2-0.4 mm long.
→ 2
2. Pedicels appressed, rarely diverging to 20° from the branches
var. pectinacea
2. Pedicels widely divergent, usually diverging 20-60° from the branches
var. miserrima
Source FNA vol. 25, p. 83. FNA vol. 25, p. 81.
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. 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
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. lugens, E. lutescens, E. mexicana, E. minor, E. obtusiflora, E. palmeri, 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
Subordinate taxa
E. pectinacea var. miserrima, E. pectinacea var. pectinacea, E. pectinacea var. tracyi
Synonyms E. megastachya, E. major
Name authority (All.) Vignolo ex Janch (Michx.) Nees
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