Comprehensive Description
provided by North American Flora
Sparganium diversifolium Graebner, Schr. Nat. Ges
Danzig II. 9 : 335. 1895.
Perennial; stem erect, 2.5-10 dm. high; leaves narrow, 3-5 mm. wide, abruptly acute , the lower altogether flat, without keel, with obsolete midrib, the upper convex on the back or in the lower part sharply keeled, flat toward the apex ; inflorescence simple, the upper portion often drooping ; pistillate heads 1-3, distant ; staminate heads 1-6, distant ; fruiting heads 2 cm. in diameter; sepals narrow, cuneate, tapering into a claw; achenes dark grayish-brown, with prominent nerves ; body obovoid, tapering below into a short stipe, above abruptly contracted into the short beak ; stigma lance-linear.
Type locality : West Prussia.
Distribution i Central and northern Europe ; also in Newfoundland, New Hampshire, and Minnesota, according to Graebner.
- bibliographic citation
- Percy Wilson, Per Axel Rydberg, Norman Taylor, Nathaniel Lord Britton, John Kunkel Small, George Valentine Nash. 1909. PANDANALES-POALES; TYPHACEAE, SPARGANACEAE, ELODEACEAE, HYDROCHARITACEAE, ZANNICHELLIACEAE, ZOSTERACEAE, CYMODOCEACEAE, NAIADACEAE, LILAEACEAE, SCHEUCHZERIACEAE, ALISMACEAE, BUTOMACEAE, POACEAE (pars). North American flora. vol 17(1). New York Botanical Garden, New York, NY
