Eleocharis bella (Piper) Svenson

Eleocharis bella (Piper) Svenson, Rhodora 31 : 201. 1929.
Eleocharis acicnlaris var. minima Torr. ; Britton, Jour. N. Y. Micr. Soc. 5: 104. 1889. (Oregon.) Eleocharis acicularis var. bella Piper; Piper & Beattie, Fl. Palouse Reg. 35. 1901. (Washington [State].)
Annual? Rootstock very short, the plant forming dense round tufts 5-10 cm. in diameter ; culms ascending, 2-6 cm. high, light green, capillary, soft, sometimes angled and sulcate ; sheaths loose, inflated at the summit, acute; spikelets 2-3 mm. long, blunt or acute, ovate, many-flowered; scales ovate-lanceolate, keeled at the summit, acute, with a broad green midrib and purple-striated sides; style trifid; anthers 0.4 mm. long; achene yellowish or white, linear-obovate, 0.7-0.8 mm. long, obtusely 3-angled, with 3 primary and many secondary longitudinal ridges and about 30 trabeculae in each longitudinal series ; bristles none.
Type locality: Pullman, Washington (Piper 3055).
Distriblh-ion : Chiefly in river alluvium : Washington, Idaho, and Montana, south to northern Mexico (Chihuahua, Mueller).