Hyparrhenia rufa

(Nees) Stapf
Common names: Jaragua grass
Treatment appears in FNA Volume 25. Treatment on page 678.

Plants usually perennial; cespitose but with short rhizomes. Culms 30-350 cm. Sheaths glabrous; blades 30-60 cm long, 2-8 mm wide. Peduncles 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. Glumes of all spikelets moderately densely pubescent, hairs reddish. Sessile spikelets of homogamous pairs 3-5.5 mm, sessile spikelets of heterogamous pairs 3.2-4.2 mm; lemmas awned, awns 2-3 cm. Pedicellate spikelets 3-5 mm. 2n = 30, 36, 40.


Puerto Rico, Pacific Islands (Hawaii), Fla.


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.

Selected References


Lower Taxa