Paspalum setaceum |
Paspalum conjugatum |
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fringeleaf paspalum, sand paspalum, slender beadgrass, slender crown grass, thin paspalum |
herbe creole, Hilo grass, muhsrasre, rehn wei, sour grass, sour paspalum, ti grass |
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Habit | Plants perennial; cespitose or shortly rhizomatous. | Plants perennial; stoloniferous. | ||||||||||||||||||||||||||||||||||||
Culms | 25-110 cm, erect, spreading, or prostrate; nodes glabrous or pubescent. |
15-80 cm, erect; nodes glabrous. |
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Sheaths | glabrous or pubescent; ligules 0.2-0.5 mm; blades flat, glabrous or pubescent. |
glabrous, pubescent distally; ligules 0.5-0.8 mm; blades 7-23 cm long, 1.5-8 mm wide, flat. |
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Panicles | terminal and axillary, with 1-6 racemosely axillary arranged branches, panicles partially or completely enclosed by the subtending leaf sheath; branches 2-12(17) cm, ascending to spreading, often arcuate, terminating in a spikelet; branch axes 0.2-1.2 mm wide, glabrous, sometimes scabrous. |
terminal, usually composed of a pair of branches, a third branch sometimes present below the terminal pair; branches 2.5-12.7 cm, diverging to spreading, often arcuate, persistent; branch axes 0.2-0.8 mm wide, glabrous, margins scabrous, terminating in a reduced spikelet. |
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Spikelets | 1.4-2.6 mm long, paired, imbricate, appressed to the branch axes, elliptic to obovate to ovate to orbicular, stramineous or brown. |
1.3-1.9 mm long, 0.8-1.1 mm wide, solitary, appressed to the branch axes, ovate, stramineous. |
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Lower glumes | absent; upper glumes and lower lemmas glabrous or shortly glandular-pubescent, 3-veined, margins entire; lower lemmas lacking ribs over the veins; upper florets stramineous. |
absent; upper glumes pilose on the margins, veinless or 2-3-veined; lower lemmas glabrous, veinless or 2-3-veined; upper florets whitish to golden yellow. |
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Caryopses | elliptic to suborbicular, white. |
0.9-1.1 mm, white to yellow. |
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2n | = 20. |
= 18, 20, 40, 80. |
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Paspalum setaceum |
Paspalum conjugatum |
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Distribution |
AL; AR; AZ; CO; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; MI; MN; MO; MS; MT; NC; NE; NH; NJ; NM; NY; OH; OK; PA; RI; SC; SD; TN; TX; VA; VT; WI; WV; PR; ON
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AL; FL; LA; MS; TX; UT; HI; PR; Virgin Islands
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Discussion | Paspalum setaceum is a variable species that grows east of the Rocky Mountains in the contiguous United States and Mexico. The following treatment summarizes the major patterns of variation within the species. Some specimens will be hard to place, particularly old herbarium specimens that have lost their color. Nine varieties grow in the Flora region. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum conjugatum is native to tropical and subtropical regions of both the Western and Eastern hemispheres, including the Flora region. It grows in disturbed areas and at the edges of forests, and is sometimes used as a lawn grass. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 25. | FNA vol. 25, p. 572. | ||||||||||||||||||||||||||||||||||||
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | ||||||||||||||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||||||||||||||
Name authority | Michx. | P.J. Bergius | ||||||||||||||||||||||||||||||||||||
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