Paspalum quadrifarium

Lam.
Common names: Paja manse Paja colorada Tussock paspalum
Treatment appears in FNA Volume 25.

Plants perennial; cespitose. Culms (50) 100-180 cm, erect; nodes pubescent. Sheaths pubescent, margins extending into auricles; ligules 1-6.3 mm; blades 15-62 cm long, 4.9-6.1 mm wide, involute to flat, glabrous. Panicles terminal, with 15-44 racemosely arranged branches; branches 1.2-8.5 cm, straight, erect to ascending, lower branches longer than those above; branch axes 0.5-0.6 mm wide, narrowly winged, glabrous, margins scabrous, pubescent, terminating in a spikelet. Spikelets 2-2.5 (3) mm long, 0.9-1.3 mm wide, paired, divergent to spreading from the branch axes, elliptic, brown to stramineous, often purple-tinged. Lower glumes usually absent, if present, to 0.9 mm, triangular; upper glumes shortly pubescent, 3-veined, purple-spotted, margins entire; lower lemmas glabrous or pubescent, lacking ribs over the veins, 3-veined, margins entire; upper florets 2.2-2.5 mm, white. 2n = 20, 30, 40.

Discussion

Paspalum quadrifarium is native to Uruguay, Paraguay, Brazil, and Argentina. It is grown as an ornamental in Florida, but has also become established in disturbed habitats of the southeastern United States. It is considered a noxious weed in New South Wales, Australia.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Paspalum quadrifarium"
40 +, 30 +  and 20 +
rounded +
anatomy +  and kranz +
Charles M. Allen +  and David W. Hall +
1 (?) +  and 3 (?) +
keeled +  and rounded +
pseudopetiolate +  and branching +
divergent +  and parallel +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
disarticulating +  and pseudopetiolate +
non-radiate +  and radiate +
15 cm150 mm <br />0.15 m <br /> (62 cm620 mm <br />0.62 m <br />) +
involute +  and flat +
0.49 cm4.9 mm <br />0.0049 m <br /> (0.61 cm6.1 mm <br />0.0061 m <br />) +
0.5mm +  and 0.6mm +
erect;ascending +
spikelike +
1.2 cm12 mm <br />0.012 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
not developed +
ringlike +
brown +, yellow +  and white +
orbicular +  and elliptical planoconvex or flattened +
sometimes longer +
Paja manse +, Paja colorada +  and Tussock paspalum +
branched +  and solid +
100 cm1,000 mm <br />1 m <br /> (180 cm1,800 mm <br />1.8 m <br />) +
capillary +
germination +
pistillate +  and staminate +
sometimes longer +
compressed +  and terete +
shorter or longer +
subtending +
unequal +
membranous +
uncinate +
bracteate +  and ebracteate +
solid +  and hollow +
cauline +  and basal +
coriaceous +
0.1 cm1 mm <br />0.001 m <br /> (0.63 cm6.3 mm <br />0.0063 m <br />) +
membranous +
inconspicuous +
0 cm0 mm <br />0 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
pubescent +  and glabrous +
complex +  and simple +
concealed +  and prominent +
2 +  and 1 +
subterranean +
spreading +  and erect +
dry +  and fleshy +
subsessile +  and shortly pedicellate +
divergent +  and paired +
purple-tinged +, brown +  and stramineous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1 +  and 60 +
unisexual +  and bisexual +
compressed +, rounded +  and acuminate +
0.9mm +  and 1.3mm +
1 +  and 3 +
fused +  and free +
2 +  and 3 +
dome--shaped +  and triangular +
Gramineae +
Paspalum quadrifarium +
Paspalum +
species +
membranous +
stipitate +  and sessile +
rounded +  and acute +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
stramineous +  and dark-brown +
smooth +  and slightly rugose +
smooth +  and slightly rugose +
stoloniferous +  and rhizomatous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +