Paspalum praecox |
Paspalum racemosum |
|
---|---|---|
early paspalum |
Peruvian paspalum |
|
Habit | Plants perennial; shortly rhizomatous. | Plants annual; cespitose or rhizomatous. |
Culms | 5-160 cm, erect, not rooting at the lower nodes; nodes glabrous. |
40-90 cm, erect; nodes purple. |
Sheaths | densely pubescent, occasionally glabrous; ligules 1-2.2 mm; blades to 55 cm long, 2.2-8.3 mm wide, conduplicate (occasionally flat), glabrous below, pubescent above. |
glabrous; ligules 0.1-0.3 mm; blades 4-13 cm long, 10-22 mm wide, flat, glabrous. |
Panicles | terminal, with 2-10 racemosely arranged branches; branches 0.8-10.3 cm, divergent to spreading, often arcuate, terminating in a spikelet; branch axes 0.8-2 mm wide, narrowly winged, glabrous, margins scabrous. |
terminal, with 40-75 racemosely arranged branches; branches 1-2.5 cm, divergent to erect; branch axes 1-1.5 mm wide, terminating in a pedicellate spikelet. |
Spikelets | 2.1-3.1 mm long, 2-2.8 mm wide, paired, imbricate, appressed to divergent from the branch axes, orbicular to suborbicular, stramineous. |
2.5-2.9 mm long, 0.8-1.2 mm wide, paired, appressed to or divergent from the branch axes, linear-elliptic, pubescent, stramineous or purplish. |
Caryopses | 1.9-2.1 mm, brown. |
white. |
Lower | glumes absent; upper glumes and lower lemmas glabrous, 3-veined, margins entire; upper florets white to light yellow. |
glumes absent; upper glumes and lower lemmas rugose, shortly ciliate; lower lemmas lacking ribs over the veins; upper florets 1.3-1.6 mm, stramineous, oblong elliptic, pale, shiny. |
2n | = 20, 40. |
= unknown. |
Paspalum praecox |
Paspalum racemosum |
|
Distribution |
AL; AR; FL; GA; IL; LA; MS; NC; SC; TX; VA
|
CO; KS; MS; ON |
Discussion | Paspalum praecox grows in pitcher plant bogs, wet pine flatwoods, wet savannahs, prairies, and wet streamhead ecotones. It is restricted to the United States, growing predominantly on the southeastern coastal plain. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Paspalum racemosum is native to Colombia, Ecuador, and Peru. Within the Flora region, it is known from disturbed sites at a few widely scattered locations. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 597. | FNA vol. 25. |
Parent taxa | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum | Poaceae > subfam. Panicoideae > tribe Paniceae > Paspalum |
Sibling taxa | ||
Synonyms | P. praecox var. curtisianum, P. lentiferum | |
Name authority | Walter | Lam. |
Web links |