Proserpinaca.] HALORAGEjE. 215 



coloratis, petalis calyce paulo longioribus, De Cand, Prodr. v, 3. p, 60. — Ludwigia alterni- 



folia. Linn, Sp, PL p. 173. BigeL FL Bost ed, 2. p, 60.— L. macrocarpa. Mich. Am. v, 



1. p. 89. Purshy Fl. Am. v. 1. p. 110, EllioU^ Carol v. 1. p. 217. Torrey, Fl. of Un. St. 

 V. I.jo. 180, 



Hab. Canada. Mr. Goldie, (in Herb, nostr.) 



2. I. pahistris; caule procumbente radicante glabro, foliis oppositis in petiolum attenuatis 

 ovatis acutis, floribus axillaribus solitarlis sessilibus apetalis. DC. — Linn. Sp. PL p. 175. 

 Hook, in Engl Bot. Suppl t 2593. Torrey, FL of Un. Si v. \. p. 182. BlgeL Fl Bosl 

 ed. 2. p. 61. De Cand. Prodr. v, 3. p, 61. — Ludwigia nitida. Mich. Am. v. 1, p. 87. Pursk, 

 Fl. Am. V. I. p. 111. — L. apetala. Wall Carol 



Had. Canada, (Pursh,') and as far north as the Sa^ikatchawan. Dr. Richardson, Drurnmond. 



TriB. III. Cl'RCMEM. DC. 



6. CIKC^A. 



Ccdyx brevis, limbo bipartite. Petala 2 obcordata. Stamina 2 petalis alterna. Stigma 

 emarginatum. Capsula ovata pilis uncinatis liispida 2-locul. 2-valv. 2-spenna. Semina in 

 Joculis solitaria erecta. — -Herbse. Folia opposita petiolata. Flores in racemos spicatos ter- 

 minates et later ales dispositi, pedicellatl, alter ni, albi. DC. 



1. C. Lutetiana; caule erecto pubescente, foliis ovatis acuminatis dentatis opacis petiolo 

 longioribus. — Linn. Sp. PL p. 12. Engl Bot. t 1026. De Cand. Prodr. v. S. p. 63. BigeL 

 Fl Bost. ed. 2, p. 8. — /?. Canadensis; caule glabro. Linn. — Mich. Am. v. I. p. 17. Pursh, 

 FL Am. V. \. p. 21. Elliott^ Carol v. \. p. 7. Torrey^ Fl. of Un. St. v. I. p. 29. 



Hab. /3. Canada. Linn. Lake Huron, Dr. Todd. About Montreal. Mr. Cleghom. 



2. C. alpina; caule adscendente glabriusculo, foliis cordatis dentatis nitidis petiolorum 

 longitudine. — Linn. Sp. PL p. 12. Engl Bot. t. 1057. Mich. Am. v. 1. p. 17. Pursh, Fl, 

 Am. V. 1. p. 21. Torrey, Fl of Un. Si v. I. p. 30. De Cand. Prodr. v. 3. p. 63. BigeL Fl. 

 Bost. ed. 2. p. 11. 



Hab. Canada. Michaux, From Lake Huron {DovglaSj Dr. Todd) to the Saskatchawan. Dr. Rich- 

 ardsony Drurnmond, Rocky Mountains, near the sources of the Columbia, Drurnmond. Shady TV'oods on 

 the North -West coast of America, Douglas. 



Ord. XXXI. HALORAGEiE. Br. 



Trie. I. Cercodianje. Juss. — Hygrobie^e. Bich. 



L PROSERPINACA. Linn. 



Calycis tvhus ovario tiiquetro adlia^rens, limbus 3-partitus. Petala 0, Stam. 3. Stig- 

 mata 3 ad apicem ovarii sessilia. Carpella 3 in fructum trigonum concreta sicca indeliis- 

 centia 1-sperma. Semen ex apice loculi pendulum. Albumen camosum seu endopleura 

 tumida. Embryo rectus, teres, radicula longa supera, cotyledonibus brevibus. — Herba' 

 aquaticce Boreali- Americance glabrm^ radicibus repentibus, foliis oppositis, Jloribus axillari- 

 bus glomcratis sessilibus interdum ^-fidis 4<-andris. DC. 



1. P. nalusiris; foliis lineari-lanceolatis serratis infimis saepe pinnatifidis, nucis angulis 



