Hair Like Spike Rush

Eleocharis nana Kunth, Enum. PL 2 : 140. 1837
Chaetocyperus punctatus Nees in Mart. Fl. Bras. 2^: 93. 1842.
Heleocharis punctata Bock. Linnaea 36: 420. 1870. Not E. punctata Hochst. 1855. Scirpus camptotrichus C. Wright in Sauv. Anal. Acad. Ci. Habana 82: 78. 1871. (Cuba.) Eleocharis camptotricha Clarke, Symb. Ant. 2 : 69. 1900.
Erect cespitose annual (?) with coarse whitened roots; culms 4-12 cm. long, glaucousgreen, punctate, irregularly sulcate; sheaths stramineous, often marcescent, the apex appressed-acute to somewhat inflated; spikelets ovate to elliptic, 3-4 mm. long, 5-8-flowered; scales greenish to stramineous, keeled, the apex and margin hyaline; style trifid; achene sharply trigonous to costate, 1-1.3 mm. long, greenish, becoming pearlywhite when mature, obscurely reticulate ; style-base deep olive to brown, short-pyramidal with an acuminate tip ;
bristles colorless to light brown, exceeding the achene.
Type locality : Rio de Janeiro, Brazil. Distribution: Florida; Cuba; British Guiana; Brazil.