Paspalum laeve |
Paspalum hartwegianum |
|
---|---|---|
field beadgrass, field paspalum |
hartvcecs paspalum, Hartweg's paspalum |
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Habit | Plants perennial; shortly rhizomatous. | Plants perennial; decumbent or cespitose. |
Culms | 40-120 cm, erect; nodes glabrous or pubescent. |
50-120 cm, erect; nodes glabrous. |
Sheaths | glabrous or pubescent; ligules 1.5-3.8 mm; blades to 37 cm long, 2-9.3 mm wide, flat, glabrous or pubescent. |
glabrous, sparsely pubescent apically; ligules 2-5 mm; blades to 21 cm long, 2-5 mm wide, flat, glabrous, pubescent behind the ligules, margins ciliate basally. |
Panicles | terminal, with 1-6 racemosely arranged branches; branches 2-10.9 cm, diverging to spreading (rarely erect), persistent; branch axes 0.6-1.3 mm wide, glabrous, margins scabrous, terminating in a spikelet. |
terminal, with 4-9 racemosely arranged branches; branches 2-6.5 cm, divergent to erect, terminating in a spikelet; branch axes 1.2-1.5 mm wide, winged, glabrous, margins scabrous. |
Spikelets | 2.3-3.3 mm long, 2-2.7 mm wide, solitary, appressed to the branch axes, elliptic to obovate or nearly orbicular, glabrous, stramineous. |
2.8-3 mm long, 1.5-1.6 mm wide, paired, imbricate, appressed to divergent from the branch axes, elliptic, stramineous. |
Lower glumes | absent; upper glumes 3-veined, lower lemmas 5-veined; upper florets pale to stramineous. |
absent; upper glumes and lower lemmas abundantly pubescent, hairs longer than 0.1 mm, 3-veined, margins entire; lower lemmas lacking ribs over the veins; upper florets 2.5-2.7 mm, white to stramineous. |
Caryopses | about 2 mm, white to yellow-brown. |
|
2n | = 20, 58, 70, 80. |
= 60. |
Paspalum laeve |
Paspalum hartwegianum |
|
Distribution |
AL; AR; CT; DC; DE; FL; GA; IL; IN; KS; KY; LA; MA; MD; MI; MO; MS; NC; NJ; NY; OH; OK; PA; SC; TN; TX; VA; WV
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TX |
Discussion | Paspalum laeve is restricted to the eastern United States. It grows at the edges of forests and in disturbed areas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum hartwegianum grows in wet prairies, ditches, and swales from southern Texas through Mexico and Central America to Paraguay and Argentina. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 572. | FNA vol. 25, p. 597. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Synonyms | P. longipilum, P. laeve var. pilosum, P. laeve var. circulare, P. laeve var. australe, P. circulare | |
Name authority | Michx. | E. Fourn. |
Web links |