412 COMPOSITE. Senecio. 



Var. Balsamitae, Torr. & Gray, has thinner leaves, even the radical ones lan- 

 ceolate or elongated-oblong, the cauline pinuately-parted. 



Var. borealis, Torr. & Gray, is a low form, a span to a foot or more high, soon 

 glabrous, with thick and firm small leaves ; the radical obovate or spatulate and 

 merely toothed, sometimes only at the apex ; cauline ones usually few : heads one 

 or two, or several. Alpine forms of this pass into the next species. 



Moist or wet ground, chiefly in the Sierra Nevada : the ordinary form from near Mount Dana 

 (Brewer), thence eastward and northward to the Atlantic. The var. multilobatus hardly in Cali- 

 fornia (as the original is from Nevada or Utah, and Coulter's plant very likely is of the foregoing 

 species), but occurs as near as the Pah-Ute Mountains in Nevada. Var. Balsamitce has been 

 collected no nearer than Oregon. Var. borealis at Carson, Summit, &c., and an alpine form 

 connecting it with S. canus from high peaks, Mount Dana, &c. The most polymorphous species 

 of the genus. 



-s- -t- +- Leaves lanceolate or broader, entire, serrate, or rarely some of them laciniate : 



akenes glabrous. 

 ++ Low, small-leaved : heads few or solitary. 



8. S. canus, Hook. A span or two high, white with a dense close wool which 

 is mostly permanent : leaves entire or rarely few-toothed ; the radical and lowest 

 oblong, oval, or spatulate (an inch or less in length and with rather slender peti- 

 oles) ; the upper occasionally sinuate-pinnatihd : heads few : involucre nearly naked 

 at base : rays 8 to 12, oblong, yellow, occasionally wanting. Hook. Fl. i. 333, 

 t. 116. 



Highest portions of the Sierra Nevada, Mount Dana to Silver Mountain, &c., at 9,000 to 

 12,000 feet (Braver, Bolander) ; also on the Humboldt and Rocky Mountains, and thence far 

 northward. On the higher peaks of the Sierra apparently passing into an alpine state of S. aureus. 

 Heads 4 to 6 lines high : rays 3 or 4 lines long. 



9. S. Fremontii, Torr. & Gray. A span or two in height, diffusely much 

 branched from the root, glabrous, leafy : leaves thickish and rather succulent, an 

 inch long or less, from round-obovate to spatulate, obttisely and irregularly toothed, 

 tapering into a narrow-cuneate base or short winged petiole : heads on short and 

 bracted peduncles terminating the sterns or short branches : involucre sparingly 

 calyculate at base: rays 8 to 12, yellow. Fl. ii. 445; Gray in Proc. Acad. Philad. 

 1863, 67 ; Eaton in Bot. King Exp. 192. 



On Lassen's Peak, Lemmcm. A rather small form. A species of the Rocky Mountains, before 

 found as far west as those of Utah. 



10. S. G-reenei, Gray. Less than a foot high, lightly clothed with loose cob- 

 webby wool when young, inclined to be glabrous with age : leaves chiefly radical, 

 oval or roundish and mostly with a cuneate base, coarsely crenate-serrate (an inch or 

 more in length) rather long-petioled; the cauline smaller and nearly sessile, sometimes 

 reduced to subulate bracts : heads mostly solitary, sometimes 3, large : involucre 

 (half an inch or more long) campanulate, wholly naked at base: rays 9 to 14, oblong- 

 linear, deep orange or flame color; disk- corollas also orange at the tips: style- 

 branches bristly-fringed round the base of the obtusely conical tip, which is pointed 

 with a central cusp. Proc. Am. Acad. x. 75. 



Woods near the Geysers, Napa Co., E. L. Greene. Rays fully half an inch long. Akenes 

 glabrous. A showy species. 



++ ++ Taller, a foot or two, sometimes a yard or more high, naked at summit, the upper 

 leaves decreasing to bracts, commonly with loose woolliness ivhen young, but green 

 and glabrous or nearly so with age. 



= Heads pretty large and broad ; the campanulate or hemispherical involucre 4 to 6 

 lines long, loosely calyculate ivith some slender-subulate bracts. 



11. S. Clarkianus, Gray. Nearly glabrous, apparently from the first: stem 

 strict, 3 or 4 feet high, striate-angled, leafy almost to the top, bearing several or 



