SEXECIO 



SENECIO 



3151 



12. Doronicum, Linn. LEOPARD'S BANE. A hardy 

 herbaceous perennial, floccose-tomentulose to glabrous: 

 Ivs. thickish, ovate to lanceolate, 2-7 in. long, Yy-^A 

 in. broad, the lower usually rather coarsely dentate and 

 narrowed into a winged petiole, the upper much reduced, 

 sessile and entire: heads few, large, including the bright 

 yellow or orange-colored 

 rays 1-2 J^ in. diam.; 

 bracts of the involucre as 

 well as the bracteoles 

 attenuate, black - tipped : 

 achenes striate, glabrous. 

 S. Eu. Frequently 

 offered by European deal- 

 ers, but seldom grown in 

 American gardens. 



13. Iftgens, Richards. 

 An herbaceous peren- 

 nial, floccose-woolly when 

 young but becoming 

 nearly or quite glabrous: 

 st. practically naked 

 above: Ivs. oblong-obo- 

 yate to lanceolate, lJ^-6 

 in. long, Yr-\ in. broad, 

 repand - denticulate, the 

 lower narrowed into a 

 winged petiole: heads 

 relatively few, radiate, 

 including the yellow rays 

 y-r-^Y^ in. diam.; bracts 

 of the involucre as well as 

 the subtending bracteoles 

 acute, black-tipped: 

 achenes striate, glabrous. 



3605. Senicio aureus. 



W. X. Amer. in the Rocky Mts. from Mont, to Alaska. 

 A species very little known horticulturally. 



14. exaltatus, Nutt. An herbaceous perennial: st. 

 simple, erect, 8 in. to 3 ft. high, striate, glabrous, or 

 somewhat pubescent with long flaccid jointed white 

 hairs: lower Ivs. oblong-ovate to lanceolate, including 

 the narrowly winged petiole 3-8 in. long, Yr^> in. broad, 

 entire to unequally dentate, glabrous or more or less 

 crisp-hirsute; upper st.-lvs. much reduced, sessile: heads 

 nearly J^in. high, few to many, radiate with yellow 

 rays. Mont, to Ore.. Wash, and adjacent Canada. 

 Little known in horticulture. 



15. saxifragoides, Hook. f. A perennial herb from a 

 stout rootstock: st. about 1 ft. high, branched, covered 

 at the base with a long silky-woolly tomentum and 

 clothed above with white hairs 



intermixed with purple setae: 

 radical Ivs. petiolate, oblong- 

 elliptic to nearly orbicular, 35 

 in. long. 1 ^4-4 in. broad, dentic- 

 ulate. appressed-villous, setose 

 near the margin, and more or 

 less glabrous above, hoary- 

 woolly beneath: heads sev- 

 eral. corymbose, radiate; rays 

 18-20, yellow; disk-fls. numer- 

 ous: achenes glabrous. New 

 Zeal. B.M. 8394. Intro, into 

 England in 1908 and brought 

 to flower two years later at 

 Kew; it is a strikingly beauti- 

 ful plant worthy of cult. 



16. Bolanderi, Gray. A slen- 

 der herbaceous perennial: st. 

 ascending or erect from a 

 creeping rootstock, 6-20 in. 

 high: radical and lower st.-lvs. 

 undivided and crenately 

 lobate - dentate to pinnately 

 divided into oblong - obovate 



7 



3607. Senecio Cineraria 

 the typical form with rays. 



3606, Senecio Cineraria. One of toe plants known 

 as dusty miller. 



to almost rotund divisions, glabrous above, usually 

 pubescent beneath, including the petiole 2-6 in. long, YT~ 

 1^4 in. broad: heads few, radiate, disposed in a corym- 

 bose cyme; involucre of about 13 bracts, commonly 

 tawny-pubescent; ray-fls. 5-8, rays yellow; disk-fls. 

 25-40: achenes glabrous. Calif, and Ore., near the 

 coast. 



17. aureus, Linn. GOL- 

 DEX RAGWORT. Fig. 3605. 

 An herbaceous perennial: 

 sts. 1 to several from a root- 

 stock, 1-2 ft. high, glabrous 

 or not infrequently white- 

 tomentulose in the If .-axils, 

 along the margins of the 

 petioles, and in the inn.: 

 lower Ivs. petiolate, un- 

 divided and rotund - ovate, 

 somewhat triangular-ovate 

 to oblong-ovate, J^-6 in. 

 long, two-thirds to nearly 

 or quite as broad, crenate 

 to doubly serrate-dentate, 

 usually deeply cordate at 

 the base, green on both sur- 

 faces or tinged with purple 

 beneath, glabrous or occa- 

 sionally slightly tomentu- 

 lose and soon glabrate; 

 petioles 3^-10 in. long; st.- 

 lvs. variable, petiolate to 

 sessile and ample xicaul. 

 lyrate to pinnatisect, re- 

 duced toward the inn. some- 

 times to linear entire bracts : 

 inn. a terminal several- to 

 many - headed corymbose 



cyme; heads J^-J^in. high, radiate; involucre cam- 

 panulate, calyculate, glabrous or occasionally slightly 

 tomentulose ; bracts of the involucre 13-21, linear, acute ; 

 ray-fls. 8-12, rays yellow; disk-fls. numerous: achenes 

 glabrous. Lab. to Ga., west to N. D. and Ark. B.B. 

 3:544. Frequently grown in American gardens. 



18. Faberi, Hemsl. A stout coarse herb, glabrous or 

 glabrescent: sts. several, 4-5 ft. high, striate-angled, 

 hollow: lys. pinnatifid, coarsely dentate, expanding at 

 the base into 2 large auricles partially clasping the st.; 

 the lowermost Ivs. becoming 2 ft. in length: inn. a 

 many-headed corymbose cyme 6-8 in. diam.; heads 

 radiate with 3-5 deep yellow rays; disk-fls. 8-12, yellow. 



W. China. G.C. III. 40:43, 

 desc. Originally intro. by 

 Veitch & Sons, and more re- 

 cently by E. H. Wilson, who 

 has traveled in China. 



19. tanguticus, Maxim. (S. 

 Henryi, Hemsl.). A tall stout 

 herbaceous perennial, glabrous 

 or nearly so: st. 6-7 ft. high, 

 branched above, leafy: Ivs. 

 broadly ovate or deltoid in 

 general outline, 5-7 in. long 

 and broad, pinnately divided 

 into 'lanceolate coarsely and re- 

 motely toothed divisions, dark 

 green above, paler beneath; 

 petioles of the lower Ivs. long 

 and dilated below into an 

 amplexicaul base: heads very 

 numerous, radiate, disposed in 

 a terminal pyramidal panicle; 

 ray-fls. 3 or 4, rays yellow; 

 disk-fls. 3 or 4, corolla-lobes 

 revolute. W. China. B. M. 

 7912. Gn. 64, p. 237. A oon- 



