1914] ; 
GREENMAN— NORTH AMERICAN SENECIONEÆ 271 
acuminatis indivisis vel subpanduriformibus utrinque glabris 
subtus pallidoribus, margine irregulariter calloso-dentatis; peti- 
olis usque ad 12 em. longis anguste alatis ; inflorescentiis 
terminalibus paniculatis; capitulis 8-10 mm. altis discoideis 
20—25-floris; involucris anguste campanulatis calyeulatis glabris; 
involucri squamis plerumque 13 lineari-lanceolatis acutis penicil- 
latis ca. 6 mm. longis; achzniis striatis glabris. 
Specimen examined: 
Mexico: State of Chiapas, between Teneapa and Yajalon, alti- 
tude 900-1520 m., 13 October, 1895, E. W. Nelson, 8277 (U. 
S. Nat. Herb., fragments and tracing in Gray Herb.), ТҮРЕ. 
Senecio ($ Mulgedifolii) callosus Schz. Bip. in Flora 28: 
408. 1845. 
S. eximius Hemsl. Biol. Cent.-Am. Bot. 2: 239. 1881, as to 
synonomy.—S. doratophyllus Hemsl. І. c., in part, as to Bour- 
geau's No. 1086, not Benth.—S. viejensis and S. latipes Greenm. 
Monogr. Senecio, pt. 1, 25. 1901; in Engl. Bot. Jahrb. 32: 21. 
1902, nomen.—Cacalia Toluccana DC. Prodr. 6: 328. 1837.— 
C. prenanthoides Gray, Proc. Am. Acad. 10: 58. 1883, in part, 
as to Bourgeau’s No. 1086, not HBK.— ErecAthites runcinata 
Нет]. Biol. Cent.-Am. Bot. 2: 234. 1881, in part, as to Bour- 
geau's No. 1086, not DC. 
Herbaceus perennis ubique glabrus vel sparsissime tomen- 
tellus; caule tereti erecto circiter 1 m. alto striato plus minusve 
purpurascenti; foliis radicalibus et eis caulinis infimis petiolatis 
vel sessilibus amplexieaulibusque runcinato-pinnatifidis, lobis 
remotis, usque ad 4 dm. longis 3-18 em. latis utrinque glabris 
subtus pallidioribus calloso-dentatis, summis sessilibus et auri- 
eulato-amplexicaulibus indivisis lanceolato-attenuatis ; inflores- 
centiis terminalibus laxe paniculatis polycephalis; capitulis 
discoideis 10-12 mm. altis calyculatis 15-34-floris; involucri 
squamis plerumque 13 (8-13) lineari-lanceolatis 8-10 mm. longis 
acutis glabris et corollis plus minusve purpurascentibus; pappi 
setis albis; achzniis striatis glabris. 
Specimens examined: 
Mexico: State of Mexico, Désierto Viejo pres Mexico, Bourgeau, 
1086 (Gray Herb. and Berlin Herb.); near Guapimalpam, 
coll. of 1855, Schaffner (Gray Herb.); fir woods, Sierra de 
las Cruces, 11 December, 1892, C. G. Pringle, 5818 (Gray 
