Sparganium eurycarpum subsp. eurycarpum

Sparganium californicum Greene, Bull. Calif. Acad. 1 : 11. 1884
Perennial, with a rootstock ; stem stout, angled, 1-3 m. high ; leaf -blades often 2 m. long, 1-1.5 cm. wide, dark-green, of a softer texture than in 5. eurycarpum, keeled beneath; peduncle with erect branches; lower branches with 1 or 2 pistillate and 6-12 staminate heads ; pistillate heads in fruit 2.5-3 cm. in diameter ; sepals long-clawed ; blades obovate, rounded and erose at the apex, scarcely wider than the dilated lower portion of the claws ; achenes sessile, their bodies obovoid, 3-5-angled, rounded at the apex, about 1 cm, long and 6 mm. thick ; beak nearly 2 mm. long; stigmas linear, usually 2.
Type locality : Calistoga, California. Distribution : Central California.