Protologue Description: CAREX GRACILLIMA Schwein., VAR. macerrima, n. var., 3-5 dm. alta; foliis 3-5 mm. latis; spiculis lateralibus pendulis 12-20-floris tenuissimis 1.5-2 mm. crassis 1.5-3 cm. longis; squamis ? albidis 2 mm. longis;perigyniis nunquam inflatis trigonis utroque acutis vel subacutis brunneis 2-2.8 mm. longis 1-1.2 mm. latis; achaeniis late ellipsoideis untroque rotundatis 1.6-1.8 mm. longis, 1 mm. latis.
Plant low, 2-5 dm. high: leaves 3-5 mm. broad: lateral spikes pendulous, 12-20-flowered, very slender, 1.5-2 mm. thick, 1.5-3 cm. long: pistillate scale whitish, 2 mm. long: perigynia not at all inflated, trigonous, acute or acutish at both ends, brown, 2-2.8 mm. long, 1-1.2 mm. wide, achenes broadly elipsoid, rounded at both ends, 1.6-1.8 mm. long, 1 mm. wide.-NEWFOUNDLAND: moist open grassland near sea-level, York Harbor, Bay of Islands, July 27, 1908, E.H. Eames & C.C. Godfrey, no. 5937 (TYPE in Gray Herb.); meadow on Govenor's Island, Bay of Islands, July 28, 1908, Eames & Godfrey, no. 5938.