I 



^^^ TRIANDRIA TRIGYNFA. 



rioribus pectinatis -, nucis | pectinate ; angles of the 

 angulis aciitis. E. | nut acute. 



Sp. pi. p. 492. Walt. p. 84. Mich, p. 76. Var. a. Pursh, 1 . p. 92. 

 i?oof fibrous, perennial.? 6f^m herbaceous, procumbent, assurgent, 



Branching, glabrous, coIumnar,gpnerallj coloured, (reddish or purple.) 

 ieam alternate, sessile j the lower frequently submersed, peitiu'fe 

 the middle incised; the upper acute, doubfj serrate j alfglabrous. 

 ±lom 1—3, axillary, nearly sessile. Calyx 3 leaved } leaves Ian- 

 ceoiate, expanding, persistent. Filaments nearly the length of the 

 calyx, aihxed to the summit of the germ, opposite to the leaves of 

 the calyx, alternating with tlie stigmas. Jinthers erect, at first 

 sessile. Gerni inferior, 3 angled, angles very sharp, almost winL-ed. 

 l^tyles 0. htigmas 3, glandular, bright purple, expanding. Fruit % 

 J\utS celled, not opening. Seed one in each ceil, oblong. 

 Irrows m ditches and shallow waters. 

 Flowers April. 



^ 



2, Pec TIN AT A. La Marck. 

 ^ P,^ foliis omnibus pec- j All tlie leaves pectinate. 

 tinatis, nuce niajore an- Nut larger with obtuse 

 gulis obtusis. E. ( angles. 



La Marck, Illust. 1. p. 214. Pursh 1. p. 92. 

 P. palustris, var. h. Mich. 1. p. 76. 



Root perennial ^ Stem herbaceous, erect, sometimes procumbent, 

 &--8 inches high, rarely branching, angled near the suminit /rfnr« 

 alternate, glabrous, pectinate ; segments linear, acute, expanding. 

 Flowers 1—3, axillary, nearly sessile. Utigmas white. JS*ut 3 ang- 

 led, larger than in the prececfing species with the angles obtuse. 



Grows in sl^ allow water, common around pine-barren ponds in Cbat- 

 ham county, Georgia. 



IJ'lovvers May — April. 



POL YC ARPON. 



Calyx 5— phvllus. Pe- I " Calyx 5 leaved.* P^- 

 fala 5, niinima, ovata. | tals 5, verv small, ovate. 

 Capsula 1— loculaiis, tri- | Capsule i-cellcd, 3 val- 

 valvis. I ved. 



1. Tetraphyllum, 



Sp. pi. I . p. 490. 



^ iRoof somewhat fusiform, annual ? Stem S— 6 inches high, ascem- 

 ihg or erect, much branched, glabrous, striate, knotted. Le^t-'<^^"K 



{K)8ite and by fours, obovate, obtuse, entire, glabrous., narrowed » 



