Comprehensive Description
(
Inglês
)
fornecido por North American Flora
Alisma geyeri Torr. in Nicollet, Rep. Hydrograph
Miss. Riv. 162. 1843.
Alisma validum Greene, Pittonia 3 : 156. 1896.
Alisma arcuatum Lunell, Bot. Gaz. 43: 210. 1907. Not A. arcualum Michalet. 1854.
Alisma arcuatum pumilum Lunell, Bot. Gaz. 43: 211. 1907. Not A. arcuatum pumilum Prahl.
1890. Alisma arcuatum lanceolalum Limell, Bot. Gaz. 43 : 211. 1907. Not A. lanceolatum With. 1796. Alisma arcuatum angustissimum L/tmell, Bot. Gaz. 43: 211. 1907. Not A. Plantago angustis-
simum DC. 1815.
Plants diffuse; leaf -blades oblong, elliptic, oblong-lanceolate or ovate-lanceolate, or rarely linear, 5-9 cm. long, acute or slightly acuminate at the apex, narrowed at the base ; the petioles usually longer than the blades ; scapes mostly 1-5 dm. long, more or less diffusely spreading, the branches and pedicels relatively stout ; bracts lanceolate ; sepals orbicular-ovate, about 2.5mm. long; petals pink, 2-4 mm. long; achene-heads 4.5-5.5 mm. broad, the achenes suborbicular, about 2 mm. in diameter, the beak erect or nearly so.
Type locality : Near Devils Lake, North Dakota.
Distribution : Western New York to North Dakota, Oregon, and Nevada.
- citação bibliográfica
- 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
