Eleocharis maculosa (Vahl) Roem. & Schult.

Eleocharis maculosa (Vahl) R. & S. Syst. Veg 2:154. 1817.
Eleogenus ocreatus var. 2 albo-ater Nees in Mart. Fl. Bras. 2^: 102. 1842, fide Bockeler.
EleogfJusVcreatus var. /3 3 binocreatus Nees in Mart. Fl. Bras. 2^: 103. 1842. fide Bockeler.
EleogenuTschottianns Nees in Mart. Fl. Bras. 2^: 102 1842. (Brazil.) Eleocharis binocrenata Nees; Steud. Syn. Cyp. 79. 1855, as syn. Eleocharis Schottiana Steud. Syn. Cyp. 79. 1855. ,-^ ., .
H eleocharis Glaaioviana Bock. Vidensk. Meddel. 1871 : 150. 1872. (Brazil.) Heleocharis Lehmanniana Bock. Bot. Jahrb. 8: 205. 1887. (Ecuador.) Trichophylhim macnlosum House, Am. Midi. Nat. 6 : 203. 1920.
Stolons elongate, castaneous; culms 7-35 cm. long, erect, striate, rigid; apex of the upper sheath conspicuously enlarged, scarious and rugose ; spikelets 5-12 mm. long, ovoid to lanceolate, many-flowered, the scales densely imbricated; scales ovate, rather blunt, firm, shining, purplish-brown to black with scarious margins, the lowest orbicular with a prominent green midrib; style bifid; stamens 3; achene obovoid, narrowed at the base, 1.3-1.5 mm. long (including the style-base), shining-black, the surface roughened; style-base half as wide as the achene, light brown, with a dilated base and a narrow subulate beak; bristles 7 or 8, reddish-brown, of unequal length, some usually equaling the achene, the retrorse teeth small but very numerous.
Type locality: Guadeloupe (Richard).
Distribution : Guatemala ; Guadeloupe ; Martinique ; Dominica ; Venezuela ; Colombia ; Ecuador ; Bolivia ; Brazil.