Eragrostis bahiensis |
Eragrostis japonica |
|
---|---|---|
bahia lovegrass |
pond lovegrass |
|
Habit | Plants perennial; cespitose, with innovations, without rhizomes, not glandular. | Plants annual; cespitose, without innovations, without glands. |
Culms | 25-95(110) cm, erect, glabrous. |
25-100(115) cm, erect or geniculate, lower portion glabrous and shiny. |
Sheaths | glabrous, summits hairy, hairs 1-3 mm; ligules 0.2-0.4 mm; blades (8)12-40 cm long, 2-5 mm wide, flat to involute, abaxial surfaces glabrous, adaxial surfaces scabridulous and glabrous or long ciliate basally. |
glabrous at the apices and on the upper margins; ligules 0.4-0.6 mm, scarious, glabrous; blades (4)15-20(25) cm long, 1.5-6 mm wide, flat, sometimes auriculate, abaxial surfaces glabrous, smooth, adaxial surfaces scabridulous, Panicles 15-40 cm long, 0.8-5 cm wide, lanceoloid, contracted, interrupted near the base; primary branches 2-10 cm, appressed or diverging to 30° from the rachises, spikelet-bearing to near the base; pulvini glabrous; pedicels 0.5-1.5 mm, sinuous. |
Panicles | terminal, 15-30(45) cm long, (4)8-17 cm wide, narrowly ovate, open to contracted; primary branches 5-15 cm, diverging 20-90° from the rachises, often capillary, usually naked basally; pulvini glabrous; pedicels 0.3-6 mm, mostly appressed, scabridulous, always shorter than the spikelets. |
|
Spikelets | 6-15(18) mm long, 1.3-2(2.2) mm wide, narrowly lanceolate, plumbeous, occasionally with a reddish-purple tinge, with 8-30(40) florets; disarticulation usually in the rachilla below the florets, occasionally the lemmas falling separately, leaving the paleas on the rachilla. |
2.2-3.8 mm long, 0.8-1.3 mm wide, oblong to narrowly lanceolate, yellowish-brown to whitish and hyaline, with 4-12 florets; disarticulation basipetal, rachillas and glumes persistent. |
Glumes | lanceolate to ovate, membranous to subhyaline, keeled; lower glumes 1-1.4 mm; upper glumes 1.4-1.7 mm; lemmas 1.5-2.2 mm, broadly ovate, leathery, scabridulous, lateral veins evident, apices acute; paleas 1.4-2.1 mm, hyaline, bases not projecting beyond the lemmas, keels scabridulous, apices acute to obtuse; anthers 2, 0.4-0.6 mm, reddish-purple. |
subequal, 0.6-1 mm, ovate to ovate-lanceolate, hyaline; upper glumes without a midvein; lemmas 0.9-1.2 mm, ovate, hyaline, lateral veins conspicuous basally, greenish, apices acute; paleas 0.6-0.8 mm, hyaline, keels smooth basally, scabridulous distally, apices acute, often bifid; anthers 2, 0.1-0.2 mm, whitish to light brown. |
Caryopses | 0.6-0.8 mm, obovoid to ellipsoid, terete, somewhat striate, reddish-brown. |
0.3-0.4 mm, obovoid, smooth, reddish-brown. |
2n | = unknown. |
= 20. |
Eragrostis bahiensis |
Eragrostis japonica |
|
Distribution |
AL; FL; GA; LA; NJ; SC |
AL; AR; FL; GA; IL; LA; MO; MS; OK; SC; TN; TX |
Discussion | Eragrostis bahiensis grows in sandy soils near river banks, lake shores, and roadsides, at 0-200 m. Its range extends south from the Gulf Coast of the United States through Mexico to Peru, Bolivia, Paraguay, and Argentina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eragrostis japonica is native to the tropics of the Eastern Hemisphere; it is now established in moist areas along rivers and streams in the southern portion of the contiguous United States, usually in sandy soils, at 0-200 m. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 101. | FNA vol. 25, p. 74. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eragrostis |
Sibling taxa | ||
Synonyms | E. glomerata | |
Name authority | (Schrad.) Schult. | (Thunb.) Trin. |
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