Senecio.] COMPOSITE. 333 



Hab. Moist Prairies among tlie Rocky Mountains. Drummond. — A very distinct and handsome species, 

 with leaves singularly truncate at the hase, and all, except one or two of the uppermost, petiolate. 



Tab. CXV. Senecio triangularis. Fig. 1, Scale of the involucre; Jig. 2, Floret of the rayj Jig. 3, Floret 

 of the disk. 



8. 5. Serra; elatus ramosus'glabeiTinuis, foliis numerosis lineaii-lanceolatis profunde iii- 

 aequaliter dentato-serratis, paniculis ramosissimis dense snbcorymbosis, involuci'i foliolis 

 laxiusculis vix spliacelatis. 



Hab. Common on the hanks of the Wallawallah, Fhithcad, and Spokau Rivers. Douglas. — " Two to 

 three feet high." My solitary specimen has no root-leaves; hut it suffices to show that the speciesis distinct 

 from any with which I am acquainted. The leaves are copious, and the flowers exceedingly numerous, in 

 a dense corymbose panicle, each of a rather small size. 



9. S. canus ; cano-tomentosus, foliis radicalibus spathulatis intcgerrimis, caubnls liueari- 

 lanceolatis pinnatifidls, iuvolucri foliolis vix sphacelatis. (Tab. CXVI.) — /3. foliis stipra 'da- 

 briusculis. 



Hab. Banks of the Saskatchawan, rare. Drummond, /3. Lake Huron. Dr. Todd. — The white and 

 hoary surface of the stem and leaves, in this plant, is very striking; thougJi in the var. /3. the tomentum is 

 chlcJly confined to the underside. 



Tab. CXVI. Senecio cauus. Fig. 1, Involucre ; Jig. 2, Floret of the circumference; Jig. 3, Floret of the 

 disk ; Jig. 4, Portion of the pappus. 



10. S. aureus ; elatus glaber, caule folioso, foliis radicalibus longe petiolatis obovatis ro- 

 tundatis cordatisve serratis, caulinis lyrato-pinnatifidis lobis serratis biisi auriculatis, axillis 

 lanatis, floribus corymbosis. — Linn, — Mich, Am. v, 2. p, 120. Pursh, FL Am. v. 2, p. 531. 

 Eich. ill Frankl. 1st Jour ii. ed, 2. App. p, 30. Elliott^ Carol, v, 2, p. 331. — S. fastiglatus, 

 Schvein, MS, in Herb, nostr, Elliott^ Carol, v. 2. p. 331. — /3. gracilis ; foliis radicalibus 

 obovatis. — S. gracilis. Purshy FL Am. v. 2. p, 529. Ilic/i, in Frankl. Jst Journ, ed, 2. App, 

 p. 30. Elliott, Carol, v. 2, p, 329. — S. obovatus. Willd.^Pursh, FL Am. v. 2. p, 550. 

 Elliott, Carol, v. 2. p. 329. — S. Cymbalaria. Pursh, FL Am. v. 2. p. 580. (according- to 

 Nuttall.) — y. foliosus ; foliis caulinis majoribus magis divisis. — 5. discoidtus ; radiis nullis. 

 (an S. paucifloruSj Pursh et Rich, ?) 



Hab. Throughout Canada to the Arctic Circle, and from Newfoundland {Miss Brenton) and Labrador 

 {Dr. Morrison) to the Rocky Mountains and the Pacific. Particularly abundant on Menzies Islands, and at 

 the mouth of the Columbia. Douglas. S. Mackenzie River. Dr. Itichardson. — This and the following 

 species are remarkable for the woolly hairs in the axils of the leaves. 



11. S. resedif alius ; nanus glaberrimus, caule paucissime folioso, foliis radicalibus longe 

 petiolatis exterioribus rotundatis crenato-sinuatis, interioribus lyrato-pinnatifidis segmentis 

 integris vel bi-trilobis, caulinis oblongis basi pinnatifidis, axillis lanatis, caide 1-3-floro. 

 (Tab. CXVII.) — Lessing in Linncea, v. 6. p, 243. — Cinerai*ia lyrata. ^^ Ledeb. in Mem. 

 Acad. Petersb. v. 5. p. 576." (Lessing.) Reich. Ic. Bot t, 101, Hook, et Am. in Bot, of 

 Beech. Voy. v.\. p. \2Q, 



Hab. On limestone at the raoutli of the Bear Lake River, and about Fort Norman and Fort Franklin 

 Dr. Ilichardson. Kotzcbue's Sound. Lay and Collie. — This, as may be seen by the specimens in the Collection 

 is liable to considerable variation, for, while some of them exactly correspond with my ori<;;inal samples from 



