SAGITTARIA AND LOPHOTOCARPUS. 37 
form is confined to the Mississippi Valley. The horizontal 
beaked form is found throughout the range. 
Two specimens in the Engelmann Herbarium have a 
bract of the lowest whorl foliaceous; that of a specimen 
collected in Iowa by Wood is linear-lanceolate, acute, fal- 
cate, 8 cm. long; the other, collected by Engelmann in St. 
Louis, is 45 cm. long. ‘* Doubled”’ flowers in which the 
outer stamens become petaloid have been collected at Lan- 
caster and Harrisburg, Pa., by Prof. Porter; at West 
Troy, N. Y., by Wibbe; and at Cooperstown, N. Y., by 
Miss Keyes, in 1886. 
Form a.— Dioecious; leaves longer than broad, 15 to 
30 cm. long, from ample, broadly ovate, obtuse, to linear 
lanceolate, gradually acuminate; scape simple or branched ; 
bracts ovate, obtuse, 8 to 15 mm. long, glabrous. — From 
New Brunswick to Minnesota, Louisiana and South Caro- 
lina. It includes S. obtusa Willd., S. variabilis obtusa, 
Engelm., and S. hastata Pursh. 
Specimens examined from New Brunswick (Macoun, 1876, Cambell- 
ton) ; Ontario (Macoun, 1873, Hastings Co.; 1877, Belleville; 1884, Nation 
River); New Hampshire (Deane, 1889) ; Connecticut (Eaton); New York 
(Torrey; Gray; Trelease) ; Pennsylvania (Canby); New Jersey; Delaware 
(Durand); South Carolina (Ravenel); Kentucky (Short); Louisiana 
(Hale); Missouri (Engelmann; Bush, 1891); Illinois (Engelmann; Hitch- 
cock); Indiana; Michigan (Engelmann, Ontonagon; Schneck, 1881); 
Wisconsin (Trelease; Ballard, 666, 739, 1891, Waconia); Minnesota 
(Dewart, 1888; Dr. Mearns, 673, 674, 1888, Ft. Snelling; Sandberg, 1881, 
Vasa; Bailey, 151, 1886, Vermillion Lake; Oestland, 1886, Minnehaha; 
Ballard, 1891, 607, 731, 808, 830; Sheldon, 1892, 3061, 3256); S. Dakota 
(Williams, 1892); Iowa (Arthur; Hitchcock, 1890); Nebraska (Rydberg, 
1887, 1890, Wahoo); Kansas (Pellet, 1890, Johnson Co.; Hitchcock, 
1892, Medicine Lodge). 
Form b.— Leaves large, 1 to 4 dm. long, the lobes from 
lanceolate to broadly ovate, apex obtuse, or abruptly acute, 
basal lobes acuminate, divaricate ; scape simple or branched ; 
bracts scarious, 5 to 10 mm. long, ovate, obtuse; achenium 
3 mm. long with rather tumid dorsal wing, and long hori- 
zontal beak, subepidermal resin passages usually present 
on each face.— From Washington to Southern California. 
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