SAGITTARIA AND LOPHOTOCARPUS. 61 
(Boott, Woburn Pond, 1863); New Jersey (Parker, Camden, Oct. 1877; 
Austin, Hackensack R., Aug. 1861); Delaware (Tatnall, Wilmington, 
1861); Virginia (Coville, Colonial Beach, July 1890); Michigan (Schneck, 
Grand Rapids, 1880, 1881); Wisconsin (Hale, Prairie du Chien, 1861); 
Illinois and Missouri, many collections, 1842 to 1893; S. Dakota (Will- 
iams, 8, 5, 7 and 14, 1892); Nebraska (Williams, Greenwood, 1890); 
Kansas (Hitchcock, Manhattan, 1892); Indian Terr. (Palmer, 331, False 
Wichita R. 1868; Carleton, 268, Cherokee Outlet, 1891); Louisiana (Hale, 
Alexandria); Texas (Wright, 679; Oct. 1849); New Mexico (Wright, 
1899, 1852); California (Parish, 1136, Los Angeles Co., Oct. 1881; San- 
ford, Stockton, July, 1893). 
L. Guyanensis (HBK.) Micheli, Monogr. 3: 62 (1881). 
Sagittaria Guyanensis HBK. Nov. Gen. Sp. 1: 250 
(1815). 
Leaves floating, broadly ovate, deeply cordate, 3 to 5 cm. 
long by 4 to 6 cm. wide, obtuse to slightly emarginate ; 
scape erect or flexuous procumbent; bracts broadly ovate, 
obtuse; pedicels scarcely exceeding the bracts; filaments 
somewhat glandular; achenia very numerous, flattened, 
deeply notched, winged on both margins, without resin 
passage, the beak scarcely surpassing the margin.— Mexico, 
etc., fide Micheli, /. c. 63. 
EXPLANATION OF PLATES ILLUSTRATING THE NORTH AMERI- 
CAN SPECIES OF SAGITTARIA. 
The figures were drawn, under the supervision of the 
author, by Miss Grace E. Johnson. Nos. 3, 28, and 29, are 
from living plants. No. 28 is reduced from a water color 
sketch drawn under Mr. J. A. Sanford’s supervision by 
Dr. Hudson of Stockton, Cal. No. 2 is from the original 
plate published in the Bull. Torr. Bot. Club (1893), kindly 
loaned by Dr. N. L. Britton. The remainder are from her- 
barium specimens. Detail drawings, unless otherwise speci- 
fied, are enlarged ten diameters. 
Plate 1, 8. arifolia Nutt.—1, Plant reduced to half size; 2 and 3, lateral 
view and cross section of achenium; 4 stamen; 5, plant of S. arifolia 
stricta, reduced to half size. 
Plate 2, S. cuneata Sheld.— Plant and upper portion of the scape, 
natural size; achenium, < 30. 
35 
