392 COMPOSITiE. Senecio. 



1. c. ; Torr. & Gray, 1. c. Here perhaps S. Cijmhalaria, Pursh, Fl. ii. 530. — Wet ground on 

 mountains, Wyoming to Brit. Columbia, Oregon, and sparingly in California. Tlie most 

 depauperate form. 



S. Fendleri, Guay. Very canescent with pannose or floccose wool, in age tardily glabrate : 

 stems rather stout, 5 to 15 inches high, leafy, the larger plants brandling: leaves oblong- 

 lanceolate or narrower; radical sometimes almost entire, more commonly like the cauline 

 sinuately pectinate-piunatifid or even pinnately parted, the sliort oblong divisions incisely 

 2-4-lobed : heads mostly numerous and crowded, small (3 or 4 lines, high): rays rather 

 numerous: akenes and ovaries glabrous. — I'l. Fendl. 108, Pacif. 11. Rep. iv. Ill, & Proc. 

 Acad. Philad. 1. c. — Dry ground, mountains of New Mexico and Colorado, at 6,000 to 8,000 

 feet, FencUer, Bir/eloiv, Parri/, &c. 



S. Neo-Mexicanus, Gray. More or less canescent with looser tomentum, in age gla- 

 brate : stems robust, a foot or two high (often from a simple thickish caudex), few-leaved, 

 simple or often brandling above, and bearing loose cymes of comparatively large (often 

 half-inch) heads : leaves thickish (inch or two long) ; radical oblong-obovate to spatulate, 

 with cuneate or tapering base, sometimes coarsely few-toothed only at summit, many lyrate- 

 pinnatifid, with few or several pairs of small lateral lobes ; cauline similar or more pinnatifid, 

 and the lobes incisely few-toothed: rays 12 to 16, in larger heads half-inch long: akenes 

 sometimes liispidulous-papillose, sometimes quite glabrous. — Proc. Am. Acad. xix. 55. Has 

 been variously referred to S. Fendleri, to doubtful forms of S. aureus, &c. — Mountains and 

 wooded hills of New Mexico, FencUer, Wright, Thurher, IIenr\j, Greene, &c. Arizona, Lera- 

 monj Pringle. San Bernardino Mountains, California, Parish. 



S. Arizonicus, Greene. Lightly and loosely floccose-wooUy Avhen young, early glabrate 

 and green : steins a foot or two high, sometimes from a thick perpendicular caudex : leaves 

 mainly in tlie radical tuft, thickisli, ovate to oblong-obovate (commonly 2 or 3 inches long), 

 dentate with mucronate teeth, often with rounded or subcordate, but some with cuneate base, 

 with or without one or two pairs of small lobes on tlie petiole ; lower cauline leaves one or 

 two and usually lyrate-pinnatifid, upper very small and bract-like : heads loosely cymose, 

 5 or 6 lines high : rays 9 to 12, conspicuous. — Bull. Torr. Club, x. 87. — Arizona, Palmer, 

 Primjie (referred to a form of S. aureus), Rusby. 



3. Leaves all or mainly bipinnately dissected into narrow lobes. Atlantic species. 



S. Millefolium, Torr. & Gray. Early glabrate : stems slender, a foot or two high, hear- 

 ing a corymbose cyme of rather numerous heads : these 3 lines high : radical and cauline 

 leaves similar (or the earliest less dissected), the very numerous lobes linear-oblong or nar- 

 row (1 to 3 lines long), thickish : small upper leaves narrow and more simply dissected : rays 

 few, a line or two long. — Fl. ii. 444. — Sides of precipitous mountains. North and South 

 Carolina, especially at Table Mountain, S. Carolina, and vicinity ; first coll. by Fraser. 



4. Leaves mostly once pinnately divided or parted, and again lobed or incised. Pacific species. 



S. Bolanderi, Gray. Glabrous or early glabrate : stems weak and slender, 6 to 30 inches 

 higii from slender creeping rootstocks : leaves thin and membranaceous, mostly petioled ; 

 early radical orbicular, subcordate, palmately 5-9-lobed or crenate-incised ; others pinnately 

 divided into 5 to 9 distinct leaflets, or upper lobes confluent with rounded terminal one, all 

 obtusely incised : heads several, loosely cymose, 4 or 5 lines higli : rays 5 to 8, rather long. — 

 Proc. Am. Acad. vii. 362, & Bot. Calif, i. 411. — Sandstone bluffs and in Redwoods, Mendo- 

 cino Co., California, Dolander, Rattan, to Cascade Mountains, Oregon, Kellogg, HoiceU. 



S. euryceplialus, Torr. & Gray. Floccose-woolly when young, sometimes early glabrate : 

 stems robuijj;, 1 to 3 feet high, corymbosely branching above, bearing several or numerous 

 loosely cymose heads : leaves irregularly pinnately parted or the lower divided, radical 

 mostly lyrate ; divisions of the cauline from cuneate to linear-lanceolate, variously lobed or 

 incised, mucronately tipped : heads hardly at all calyculate, fully half-inch high, commonly 

 as broad, but sometimes half smaller: rays 10 to 12, the larger half-inch long. — Gray, in 

 PI. Fendl. 109, & Bot. Calif, i. 411, excl. var. major, Pacif. R. Rep. iv. 111. — Low grounds, 

 California north of the Bay of San Francisco, and on Monte Diablo ; first coll. by Fremont 

 and Hartweg. 



S. eremophilus, Richards. Stems freely branching, leafy up to the inflorescence : leaves 

 mostly oblong in outline, laciniately pinnatifid or pinnately parted, the lobes usually incised 

 or acutely dentate : heads numerous in coryrabiform cymes, 4 or 5 lines high, short-pedun- 



