Arumleaf Arrowhead

Sagittaria cuneata Sheldon, Bull. Torrey Club 20 : 283. 1893
1 Sagittaria sagittifolia minor Pursh, Fl. Am. Sept. 395. 1814. Sagittaria arifolia Nutt.; J. G. Smith, Rep. Mo. Bot. Gard. 6 : 32. 1894. Sagittaria artfolia stricta J. G. Smith, Rep. Mo. Bot. Gard. 6 : 34. 1894. Sagittaria paniculata Blankinship, Mont. Agr. Coll. Sci. Stud. 1 : 40. 1905. Sagittaria arifolia monomorpha Lunell, Bull. Leeds Herb. I 1 : [2]. 1907. Sagittaria arifolia dimorpha Lunell, Bull. l,eeds Herb. I 1 : [3]. 1907. Sagittaria arifolia poly morp ha Lunell, Bull. Leeds Herb. I 1 : [3]. 1907. Sagittaria arifolia cuneata Lunell, Bull. Leeds Herb. I 1 : [3]. 1907.
Plants emersed and commonly 2-4 dm. tall, or submerged and varying in length with depth of the water, sometimes over 1 m. long ; leaf -blades hastate to sagittate, 6-18 cm. long, the terminal lobe ovate to lanceolate, or rarely nearly linear, mostly acute or slightly acuminate, the basal lobes much narrower than the terminal one and longer than it or shorter, acute or acuminate, except sometimes in the case of imperfectly developed blades ; phyllodia, when present, either relatively short and linear-lanceolate, or elongate and linear-attenuate ; scapes as long as the leaves or commonly shorter, simple or branched ; whorls of the inflorescence few or numerous ; bracts lanceolate or linear-lanceolate, or rarely ovate-lanceolate, acuminate ; pedicels straight, ascending, mostly 10-25 mm. long, or sometimes very short, those of the staminate flowers usually about twice as long as those of the pistillate flowers; sepals ovate to oblong-ovate, becoming 6-8 mm. long; corolla 2-2.5 cm. broad; filaments not dilated, glabrous; anthers oblong, as long as the filaments or longer; fruit-heads 1-1.5 cm. in diameter ; achenes obovate, 2-2.5 mm. long, with callous-thickened wings, the beak minute, erect over the ventral wing.
Type locality: East Battle Lake, Otter Tail County, Minnesota.
Distribution : Nova Scotia and Maine to Quebec, British Columbia, Connecticut, Kansas, New Mexico, and California.

Sagittaria hebetiloba A. Nelson, Bull. Torrey Club 26 : 6, 1899
Plants partially emersed, 2-5 dm. tall ; leaf -blades ovate or ovate-hastate, 8-14 cm. long, the terminal lobe broadly ovate, the basal lobes ovate, much shorter and smaller than the terminal one, obtuse or rounded ; scapes erect, simple or sparingly branched ; whorls of the inflorescence rather few; bracts linear-lanceolate, 1.5-2 cm. long, acuminate; pedicels 1.5-2.5 cm. long, the pistillate and staminate about equal in length ; sepals oval or ovate, becoming 7-8 mm. long ; corolla about 2 cm. wide; filaments not dilated, glabrous; anthers about as long as the filaments ; fruit-heads 10-15 mm. in diameter ; achenes obovate, about 2 mm. long, winged all around, the beak minute, erect or nearly so over the ventral wing.
Type locality: Platte Canon, Laramie County, Wyoming. Distribution : Known only from the type locality.