260 UMBELLIFERiE. [Helosciadium. 



r" 



Hab. Woody country of North America, between lat. 54° and Gi"^ North. Dr. Richardson. Drummond. 

 Canada. Mrs. Sheppard. Lake Huron, Dr. Todd, Straits of Dc Fuca, lat. 48°, on the West coast. Dr. 

 Scouler, — ^. On the Saskatchawan, frequent. Canada. Mr. Cleghom. 



3. C hulbifera; radicis fibris oblongis tuberoso-carnosis, foliis biternatisectis, laciniis 

 lineari-lanceolatis subserratis, umbellis terminalibus et axillaribus, axillis radiisque bulbiferis. 

 DC. — Mick, Am. v.l.p, 165, Purshj FL Am. v. \. p, 195. Torrey, FL of Un. St. t\ I. p. 

 308. BigeL FL Bost ed. 2. p. 115. De Cand. Frodr. v. 4. p. 99. 



Hab. Canada. Michaux. Lake Huron. Dr. Todd. Saskatchawan and York Factory, Hudson's Bay. 

 Drummond. 



5. ZIZIA. Koch. 



Calycis margo obsoletus aut brevissime 5-dentatus. Petala elliptica in acumen longum 

 inflexum attenuata. Fructus a latere contractus subdidymus subrotundus vel ovalis. 

 Mericarpia jugis 5 filifonnibus prominulis sequalibus, later alibus marginantibus. Valhculce 

 1-vittatae. Commissura 2-vittata. Carpophorum bipartitum. Semen tereti-convexum 

 antice vix planiusculum. — Herbse perennes Boreali- American ts. Caules suhsimpUces erecti. 

 Folia uni~aut bi-ternatisecta^ segmentis oblongis ovatis cordatisve, Involucrum nullum ; 

 involucella oUgopliylla varia. Tlores Jiavi, rarius albi aut atro-purpurei. Differt a Smyrnio 

 semine non involuto et ab Apio petalis longe acuminatis, DC, 



1. Z. aurea ; foliis biternatim-sectis foliolis oblongo-lanceolatis basi attenuatis inciso- 

 serratis, involucellis triphyllis unilateralibus. DC. — Koch. Umb. p. 129. De Cand. Prodr, 

 V. 4. p, 100. — Smyrnium aureum, Linn. Sp. PL /?. 377. Mich. Am, v. \. p. 171. Flliott, 

 Carol. V. 1. p. 359. Pursh, Fl. Am. v. 1. p. 196. BigeL FL Bost. cd. 2. p. 113. — Thaspium 

 aureum. Nutt. Gen, Am. v, 1. p, 196. — Sison aureum. Spr, — Torrey^ FL of Un. St. v. 1. 

 p, 304. 



Hab. Canada. Mrs, Percival, Mr. Sheppard. Lake Huron. Dr. Todd. 



2. Z, cordata ; foliis radicalibus indivisis cordatis crenatis petiolatis, caulinis subsessilibus 

 trisectis, segmentis petiolulatis ovatis cordatis serratis, involucellis submonophyllis, DC- — 

 Koch. Umb. p, 129. De Cand. Prodr. v, 4. p, 100. — Smyrnium cordatum. Walt, Ft, Carol, 

 p. 114. Mich, Am. v. 1. p. 170. Pursky FL Am, v, \. p. 196. Elliott, Carol, v, I, p. 359. 



Torrey, Fl, of Un. St. v, i. p, 306. — Smyrnium trifoliatum. Nntt. Gen. Am. v, \, p, 195, 

 Rich, in Frankl. \st Journ. ed. 2. App, p. 10. 



Hab. Plains of the Red River. Douglas. Saskatchawan, and the River Winipeg, and Prairies of the 

 Rocky Mountains. Drummond. 



6. HELOSCIADIUM. Koch, 



Calycis margo 5-dentatus obsoletusve. Petala ovata Integra apice recto vel inflexo, Styli 

 breves. Fructus a latere compressus, ovatus vel oblongus. Mericarpia jugis 5 filiformibus 

 prominulis sequalibus, lateralibus marginantibus, vallcculis 1-vittatIs. Carpophorum integrum 

 liberum. Semen gibbo-vel tereti-convexum antice planiusculum. — Herbie. Umbellfe 

 cowpositce, Flores albi. Involucra varia. DC 



1. H.? Californicum; procumbens? foliis pinnatis, pinnis 6-10 jugis cum impari ovatis 



