60 MISSOURI BOTANICAL GARDEN. 
with a long horizontal style, and an undulate dorsal crest.— 
Plate 27. 
Specimens examined from Mexico, collected by L. Hahn, 1869, in 
Herb. Engelmann, ex Herb. A. Braun; and a fragment from the type, in 
Herb. Engelmann, ex Herb. Monaco, collected by Karwinsky. 
Lopuotrocarrus T. Durand, Index Gen. Phan. 627 
(1888). Lophiocarpus Miquel, Ill. Fl. Arch. Ind. 1: part 
2, 50 (1870), not Turcz.— Fertile flowers with stamens; 
filaments hypogynous. 
L. catycrnus (Engelm.) J. G. Smith, in Mem. Torr. Bot. 
Club, Vol. 5: 25 (1894).— Sagittaria calycina En- 
gelm. including var maxima, var media and var. fluitans 
Engelm. in Torr. Bot. Mex. Bound. Surv. 212 (1858) ; 
S. calycina var. spongiosa, and S. calycina var. gran- 
dis Engelm. in A. Gray, Man. Ed. 5, 493, 494 (1867) ; 
Lophiocarpus calycinus Micheli, in DC. Monog. Phan. 
8: 61 (1881). 
Weak; leaves floating or ascending, halberd shaped, 
broader than long, or sagittate, hastate or entire, varying 
greatly, from 2 to 20 cm. long by 1.5 to 30 cm. wide, 
obtuse or acutish, the basal lobes widely divaricate, ovate, 
acuminate ; scape simple, 1 to 3 dm. high, weak, at length 
decumbent; bracts short, orbicular, obtuse, those at the 
base of the staminate verticils often lanceolate, pointed ; fer- 
tile pedicels greatly thickened, reflexed, as long as or much 
longer than the more slender sterile ones ; filaments slightly 
roughened; achenia obovate, 2 mm. long, narrowly winged 
on both margins, a very short resin passage at the base of 
the beak above, beak about } as long as the achenium, tri- 
angular, horizontal. A very variable species according to 
the habitat ; petioles and scapes rather spongy, as are the 
phyllodia when present; phyllodia sometimes strongly 
nodose.— From New Brunswick to S. Dakota and Califor- 
nia, and southward. 
Specimens examined from New Brunswick (Fowler, Bass R., Kent 
Co., July, 1870); Maine (Swan, Kennebeck, Sept. 1859); Massachusetts 
34 
