[Vor. 1 
274 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
supra plus minusve glabratis subtus persistenter albo-tomen- 
tosis, superioribus subauriculatis; inflorescentiis terminalibus 
paucicapitatis; capitulis ea. 1 em. altis brevi-calyculatis radiatis; 
bracteis involueri plerumque 13 anguste lanceolatis apice atratis 
acutis glabris vel parce tomentulosis; flosculis liguliferis pler- 
umque 8, ligulis flavis 4-nerviis; floribus disci 30-40 acheniis 
sursum brevi-sericeo pubescentibus. 
Specimen examined: 
Mexico: State of Coahuila, mountains, Carneros Pass, altitude 
3050 m., 8 September, 1889, C. G. Pringle, 2857 (Gray 
Herb., photograph in Mo. Bot. Gard. Herb.), ТҮРЕ. 
This species was originally referred to 8. longilobus Benth., 
but it is more closely allied to S. stoechadiformis DC. and 8. 
Picridis Schauer; it is readily separated from both these species 
by having fewer involucral bracts, short, appressed and 
black-tipped bracteoles suggesting those of S. vulgaris L. 
Senecio (§ Suffruticosi) filicifolius Greenm. Monogr. Sene- 
cio, pt. 1, 25. 1901; in Engl. Bot. Jahrb. 32: 21. 1902; Contr. 
U. S. Nat. Herb. 16: 19. 1912, nomen. 
Herbaceus perennis (?) erectus ramosus 1.5-4 dm. altus ubique 
glabrus; caule tereti ad basin plus minusve lignescenti; ramis 
ramulisque striatis stramineis; foliis sessilibus vel subalato-peti- 
olatis pectinato-pinnatifidis 1.5-8 ст. longis 1-6 em. latis; seg- 
mentis linearis attenuatis acutis; inflorescentiis subcorymboso- 
cymosis oligocephalis; capitulis са. 12 mm. altis ligulatis; involu- 
cris campanulatis ealyeulatis; involucri squamis plerumque 21 
bracteolis calyculatis duplo longioribus lineari-lanceolatis acutis 
glabris vel juventate parce tomentulosis mox glabratis; flosculis 
liguliferis ca. 12, ligulis flavis; floribus disci 50-60; pappi setis 
albis; acheeniis sursum sericeo-hispidulis. 
Specimens examined: 
Arizona: Valley of the Santa Cruz River, 11 May, 1881, C. G. 
Pringle, 316 (Gray Herb.), түре; Tucson, 12 March, 1892, 
J. W. Toumey, 708 (Gray Herb.); Tempe, coll. of 1892, 
Ganong & Blaschka (Gray Herb.); Hart’s Ranch, 17 miles 
south of Tucson, 11 April, 1903, J. J. Thornber, 436 (Mo. 
Bot. Gard. Herb.); Ft. Huachuea, coll. of 1894, Maj. T. Е. 
Wilcox (Mo. Bot. Gard. Herb.) ; open сайопв, San Francisco 
Mts., April, 1887, H. H. Rusby, 214 in part (Mo. Bot. Gard. 
Herb.). 
