Hyparrhenia rufa
Hyparrhenia hirta
Jaragua, Jaragua grass
thatching grass
30-350 cm.
30-100 cm.
glabrous;
blades 30-60 cm long, 2-8 mm wide.
glabrous;
blades 2-40 cm long, 1-3(4) mm wide.
0.7-7 cm;
rames 1.5-2.5 cm, 1 almost sessile, the other with a 6-10 mm stalk, both with 7-14 heterogamous spikelet pairs.
5-10 cm;
rames 1-3.5(4) cm, 1 almost sessile, the other with a 5-10 mm base, both with 8-14 heterogamous spikelet pairs.
of all spikelets moderately densely pubescent, hairs reddish.
of all spikelets densely pubescent, hairs to 0.3 mm, white to dark yellow.
spikelets of homogamous pairs 3-5.5 mm, sessile spikelets of heterogamous pairs 3.2-4.2 mm;
lemmas awned, awns 2-3 cm.
spikelets of homogamous pairs 4.9-5.6 mm;
sessile spikelets of heterogamous pairs 4-4.5 mm;
lemmas awned, awns 1-3.5 cm.
spikelets 3-5 mm.
spikelets 4.8-6.5 mm.
= 30, 36, 40.
= 30, 44, 45.
Hyparrhenia rufa
Hyparrhenia hirta
Hyparrhenia rufa is native to the Eastern Hemisphere tropics, but is now established in tropical America. It grows in ditches, pastures, swamps, and pine flatwoods, and along roadsides, in the southeastern United States.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Hyparrhenia hirta is native to southern Africa, where it grows on stony soils and is sometimes used for thatching. It has been cultivated in Texas and Florida, but is not currently known to be established in the Flora region. A report of its occurrence in Los Angeles County, California, has not been verified.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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