Eragrostis trichodes |
Eragrostis cilianensis |
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sand lovegrass |
stink grass, stinking lovegrass, éragrostide fétide |
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Habit | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. | Plants annual; tufted, without innovations. |
Culms | 30-120 (160) cm, erect, glabrous and non-glandular below the nodes. |
15-45(65) cm, erect or decumbent, sometimes with crateriform glands below the nodes. |
Sheaths | sometimes villous along the margins, apices hairy, hairs to 5 mm; ligules 0.3-0.5 mm; blades 15-46(65) cm long, 1.5-8 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous, sometimes also pilose on the basal 1/4, hairs to 4 mm. |
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. |
Panicles | 30-80 cm long, 6-30 cm wide, oblong to ovoid, diffuse; primary branches 2-35 cm, diverging 20-90° from the rachises, naked basally; pulvini hairy or glabrous; pedicels 2-22 cm, diverging, capillary. |
(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. |
Spikelets | 3-15 mm long, 1.5—3.6 mm wide, ovate to lanceolate, greenish-yellow with a reddish-purple tinge, with (2)4-18 florets; disarticulation acropetal, paleas persistent. |
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. |
Glumes | subequal, 1.8-4 mm, narrowly ovate to linear-lanceolate, membranous, apices acuminate; upper glumes as long as or longer than the basal lemmas; lemmas 2.2-3.5 mm, broadly ovate to lanceolate, membranous, strongly keeled, keels not glandular, lateral veins conspicuous, apices acute; paleas 1.8-2.8 mm, hyaline, narrower than the lemmas, keels ciliolate, apices obtuse to truncate; anthers 3, 1-1.6 mm, purplish. |
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. |
Caryopses | 0.8-1.3 mm, rectangular-prismatic, somewhat laterally compressed, with a wide, deep adaxial groove, faintly striate, opaque, dark reddish-brown. |
0.5-0.7 mm, globose to broadly ellipsoid, smooth to faintly striate, not grooved, reddish-brown or translucent. |
2n | = 40. |
= 20. |
Eragrostis trichodes |
Eragrostis cilianensis |
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Distribution |
AL; AR; CO; IA; IL; IN; KS; LA; MI; MN; MO; MS; NE; NM; NY; OH; OK; SD; TN; TX; VA; WI; WY
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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
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Discussion | Eragrostis trichodes grows in sandy to gravelly prairies, open sandy woods, rocky slopes, and roadsides, at 100-2150 m, often in associations with Quercus marilandica, Q. stellata, Juniperus, and Redfieldia flexuosa. It is endemic to the contiguous United States, and is available commercially as an ornamental. Records from outside the primary range probably reflect introductions. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 25, p. 93. | FNA vol. 25, p. 83. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Synonyms | E. trichodes var. pilifera, E. pilifera | E. megastachya, E. major |
Name authority | (Nutt.) Alph. Wood | (All.) Vignolo ex Janch |
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