SAGITTARIA AND LOPHOTOCARPUS. 39 
phyllodial forms are difficult to distinguish from 8. arifolia 
except by the longer style, and lateral beak of the 
achenium. 
Specimens examined from Prince Edward Island (Macoun, 1888); New 
Brunswick (Chadborne, 1883); Quebec (Northrop, 1887, Detour du Lac, 
Lake Penniscouta); Vermont (Deane, 1885, Willoughby Lake; Rusby, 
1892; Morong, 1885, Ferrisburgh, with lanceolate attenuate phyllodia 1 
dm. long, and floating leaves 3 cm. long); New York (Engelmann, St. 
Lawrence River below Ogdensburg, with almost sessile staminate 
flowers; Sartwell, Penn Yan, with fertile pedicels only 5mm. long; Clin- 
ton, Alexander’s Bay, with floating lanceolate leaves 3 to 5 cm. long, and 
clustered lanceolate phyllodia; Engelmann, 1856, Table Rock, Niagara) ; 
Pennsylvania (Wolle, Bethlehem, the form communis of Engelmann) ; 
Ohio (Riehl, 1836); Kentucky (Rafinesque; Short, 1840); Michigan 
(Farwell, 419, 1886, and 460, 1890); Ontario (Macoun, 1873, Bay of 
Quinte,‘ hastata form c.;’’ Bell, 1878, Missinaiba River, ‘‘ hastata 
form c’’.); Manitoba (Bourgeau, 1858, Lake Winnipeg; Macoun, 1884, 
Lake Winnipeg, hastata form b.); Minnesota (Pitcher; Wood, 1889; 
* Ballard, 163, 831, and 897, 1891, and 1074, 1892; Sheldon, 921, 
1891, Sleepy Eye, and East Battle Lake, 1892; Taylor, 642, 1891, 
Minnesota Lake); S. Dakota, (Duffey 1889); Nebraska (Rydberg, 1887, 
Wahoo, 1890, Lodge Pole Cr., 1891, Scotts Bluff and Deuel Counties, 
and 1533, 1812, 1898, Hooker Co.); Saskatchewan (Bourgeau, 1858) ; 
British Columbia (Macoun, 1889, mouth of Fraser River, “ hastata 
form b.;”’ Lyall, 1858, 49th parallel, Oregon Boundary Survey). 
Form d.— Monocecious, very slender, 20 to 25 cm. high; 
leaves 8 to 10 cm. long, the lobes narrowly linear, diver- 
gent; fertile pedicels 10 to 15 mm. long; verticils rather 
remote; fruiting head 1 cm. in diameter.— In the mount- 
ains, New York to New Hampshire. 
Specimens examined from New York (Mrs. C. Van Brunt, 1886, Balsam 
Lake, Catskill Mts.; Torrey); Vermont (Dr. Chapman, Lake Dunmore) ; 
New Hampshire (Deane, 1883 and 1884, Shelburne, the variabilis angusti- 
folia of S. Watson, but not of Engelmann). 
Form e. — Monoecious, erect, 4 to 10 dm. high, with the 
habit of typical /atifolia; lower leaves sagittate, the upper 
ovate-lanceolate, acute at both ends, the largest 10 cm. 
long and 4 to 5 cm. wide; achenium 3.5 mm. long, dorsally 
crested, with the beak somewhat recurved at the tip. — 
Collected by Dr. Engelmann on the American Bottoms, 
opposite St. Louis, in 1856. This form is the S. variabilis 
13 
