TRIANDRIA. MOXOGTNIA. S9 



spathulate, 1 or more in the same spatha, axillary in L. 

 gramneiisf in all the others, bursting- as it were from the 

 base- of the petiole. Hov/ers extremely evanescent, ia 

 all the species white, except the L gramineits which ap- 

 pears to be scarcely of the same gvnus, all the others 

 appertam to Meter anthera^ and the L. gramineus is now 

 called ScHOLLERA, being- farther generically distin- 

 guishrd by haviriji' a capsule of one cell. 



Species. 1 o-ya/w, Mich, (spatha 2 or 3-flowered? v. 

 V.) Heteranthera limosa of Be kwois. 2 renifoi^mis,MicH. 

 H. acuta of Reuuvois This appears to be the same plant 

 witn the H. reniformis^ of the Flora Peruviana.f o. gra- 

 mineiis; (now 'icnoi.h'ERA. graminea.) Found in almosc all 

 the rivers of the United States from tiie D&laware south, 

 and in the Oiiio, to the west. 



41. STIPULICIDA. Mkliaux. 



Calix 5-parteil, persistent. Corolla 5-petal- 

 letl, petals entire, and as \ons; as the calix. 

 Style short, stigmata 3. Capsule 1-celled, 3- 

 vaived. Seeds few, each attached to tiie recep- 

 tacle by an umbilical filament. 



A small perennial herb, v^^ith a leafless, dichotomnus, ar- 

 ticulated stem; the base of each branch subtended by 3 

 opposite, lacerated stipula. Flowers minute, *erminal, al- 

 most sessile, growing- from 3 to 6 together. Radical 

 leaves minute, spathulate. 



Species, l.setacea. Very nearly allied to the genus Po- 

 lycarpon. 



42. POLYCNEMUM. L. 



Calix 3 -leaved. Petals 5 caliciform. Cap- 

 sule l-seeded, nienibranaceoiis, not opening:, co- 

 vered by the calix. (Stamina 1,2, 3, and 5.) 



stem herbaceous, brancning, diffuse, leaves crowded, 

 linear, suhnbte, or filiform, and carnose; flowers cahcine. 



f 'I he leaf ouds of this species are large and involute, including 

 an extraordinary quantity of embryon foliage, enveloped like 

 the Bracenia in a gelatinous fluid. It is also extremely locaU 

 in Penrsylvania it is scarcely known beyond the viciiuty of Phi- 

 ladelphia, anr' is not noticed by Mr. Elliot as exisiing in the 

 Southern states. 



C3 



