Fuirena umbellata Rottb.
Rottboell, C.F. (1773) Descriptionum et Iconum Rariores et pro maxima parte novas plantas : 70, t.19, fig. 3. Type: not cited.
Perennial herb, wholly light green. Culms solitary, erect from horizontally creeping rhizome, 50-100 cm tall, 6-9 mm thick below, 4-5-angular, several-nodose, glabrous except below inflorescence, base bulbous.
Basal leaves reduced to subaphyllous sheaths; bladed leaves 5-7 to a culm, spaced on middle and upper part of the culm; blades lanceolate to linear-lanceolate, 10-20 x 5-15 mm, with 5 veins, glabrous, briefly acute at apex, suddenly contracted at base, the sheaths 2-5 cm long, tightly surrounding the culm; ligule with a ciliate or glabrous membrane.
Inflorescence paniculiform, with 3-12 glomerulous clusters of spikelets; glomerules single or binate, 15-20 mm across, bearing 5-10 spikelets, the peduncles white-villose, single or binate, occasionally branched; bracts leaf-like, longer than partial inflorescence. Spikelets ovoid or ovoid-ellipsoid, 4-7 mm long, brownish-green or dark brownish-green at maturity, acute, wholly covered with wooly hairs. Glumes elliptic, 2 mm long, ciliate and sparsely pilose outside, the midvein ending in a short recurved awn ca. 1 mm long, keel strongly 3-nerved, reddish brown with green keel
Features not available.