464 composite:. 



hairy. — In moist places along the eastern base of the Sierra from the 

 Truckee Valley southward. 



9. A. foliosa, Nutt. Trans. Am. Pbil. Soc. vii. 407 (1841). Slender, 

 erect and rather strict, very leafy, canescently tomentose, 1 ft. high more 

 or less: leaves lanceolate, denticulate, nervose, the lower with tapering 

 base and connate: heads short-peduncled, corymbose, though few, rarely 

 solitary: rays rather short: achenes hirsute-pubescent or glabrate. — 

 Wet meadows of the Sierra chiefly on the eastern slope. 



10. A. fiil^eiis, Pursh, Fl. ii. 527 (1814). A. alpina of American 

 authors, not of Olin. Strict, simple and monocephalous, 1 — 2 ft. high, 

 leafy at base chiefly, the few pairs of cauline leaves reduced and bract- 

 like; herbage pubescent, the inflorescence somewhat hirsute or villous: 

 leaves thickish, from narrowly oblong to lanceolate or oblong-spatulate, 

 3-nerved, entire or denticulate: rays elongated, golden-yellow: achenes 

 hirsute-pubescent. — Meadows east of the Sierra, in Plumas Co., etc. 



105. SENECIO, Matthiolus. Plants extremely diverse in habit, foli- 

 age, etc., but leaves always alternate. Heads clustered cymosely, or 

 solitary; either radiate or discoid. Involucre usually cylindrical, of 

 many equal bracts, and with calyx-like bracteoles at the base. Flowers 

 yellow; those of the disk 5-toothed or -lobed. Receptacle flat or convex. 

 Achenes commonly glabrous, terete, often somewhat ribbed. Pappus 

 of very copious fine white capillary merely scabrous bristles. 



* Annual species; achenes not glabrous. 



1. S. VULGARIS, Tragus, Stirp. Hist. 284 (1552). Hoary-lanate when 

 young, in age nearly glabrous; slightly fleshy, 1 ft. high more or less, 

 branching, leafy throughout: leaves clasping at base, pinnatifid; the 

 lobes and sinuses sharply toothed: scales at base of the small cylindric 

 involucre with black tips: rays none. — Abundant in rich shady culti- 

 vated grounds; flowering at all seasons of the year. From Europe. 



2. S. aphaiiactis, Greene, Pittonia, i. 220 (1888). Slender, 2—6 in. 

 high, slightly arachnoid when young, glabrate in age, scarcely viscid, 

 scentless: leaves % — M i^- long, slightly fleshy, erect or ascending, the 

 lowest linear-spatulate, the cauline linear to oblong, coarsely toothed or 

 slightly lobed: heads very small, 2 or 3 together at the ends of the few 

 branches: bracts of involucre linear-acuminate, not black-tipped: rays 

 about 5, minute, recurved: achenes appressed-silky.— Clayey slopes, or 

 open hilltops of the Mt. Diablo Range, and southward. A somewhat 

 rare indigenous plant, strangely mistaken, by some, for the Old World 

 weed S. sUvatictis, to which it is not very closely related. March, April. 



