412 COMPOSITiE. Senecio. 



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

 ceolate or eloii.nated-oblong, the cauline pinnately-parted. 



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

 gialn-ous, with thick and iirm small leaves ; the radical obovate or spatulate and 

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

 or two, or severah 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. multilohatus hardly in Cali- 

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

 si^ecies), hut occurs as near as the Pah-Ute Mountains in Nevada. Var. Balsamitcc 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. 



-i- -f- -f- Leaves lanceolate or broader, entire, serrate, or rarely some of them laciniate : 



akenes glabrous. 



+-(- Loiv, small-leaved : heads few or solitary. 



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

 is mostly })ernianent : 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-pinnatifid : heads few : involucre iiearly naked 

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

 t. 116. 



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

 12,000 feet {Brewer, Bolandcr) ; 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, obtusely and irregularly toothed, 

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

 bracted peduncles terminating the stems or short branches : involucre sparingly 

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

 18G3, 67 ; Eaton in Eot. King Exp. 192. 



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

 found as far west as those of Utah. 



10. S. Grreenei, 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 ilame color; disk- corollas also orange at the tips: style- 

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

 witli 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. 



++ -4-!- Taller, a foot or two, sometimes a yard or more high, naked at summit, the ujyper 

 leaves decreasing to bracts, commonly with loose ivoolUness when young, but green 

 and glabrous or nea.rly so with age. 



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

 lines long, loosely calyculate with some slender-sxdndate 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 



