жена. > 
1914] 
GREENMAN—NORTH AMERICAN SENECIONEJE 265 
floribus disci numerosis 50-60; acheniis maturitate 2-3 mm. 
longis striatis glabris. 
Specimens examined: 
California (?): “Mohave Region," April-May, coll. of 1884, 
J. 6. Lemmon, 3130 (Gray Herb.), түре. 
Arizona: Wickenburg, valley of the Hassayampa River, April, 
1876, Dr. Edward Palmer, 614 (Gray Herb. and Mo. Bot. 
Gard. Herb.). 
The specimens cited may be looked for in herbaria under 
S. multilobatus Torr. & Gray, to which the species here proposed 
is related, but from which it differs in well developed specimens 
in the outline and size of the leaves, loose inflorescence, and 
larger heads with 21 instead of 13 involucral bracts. 8. pro- 
lixus has rather more the aspect of S. Breweri Davy. 
Senecio ($ Tomentosi) appendiculatus Greenm. Monogr. 
Senecio, pt. 1, 24. 1901; in Engl. Bot. Jahrb. 32:20. 1902, nomen. 
S. neo-mexicanus Gray, Proc. Am. Acad. то: 55. 1883, in part; 
Syn. КІ. 1°; 392. 1884, in part, as to plant of Thurber. 
Herbaceus perennis ubique plus minusve albo-tomentosus; 
caulibus subcespitosis erectis 1.5-3 dm. altis striatis ssepe foli- 
aceis; foliis radicalibus oblanceolatis vel oblongo-obovatis 
petiolo incluso 3.5-10 cm. longis 0.5-2 cm. latis dentatis ad 
basin in petiolum paulatim angustatis integris, eis caulinis petio- 
latis vel sessilibus 2-7 сіп. longis ad basin plerumque ampliatis 
irregulariter dentatis subamplexicaulibusque; inflorescentiis ter- 
minalibus corymboso-cymosis 6-12-cephalis; capitulis 10-12 
mm. altis radiatis; involucris campanulatis minute calyculatis; 
involueri squamis plerumque 21 lanceolatis 5-7 mm. longis 
acutis sparsissime tomentulosis; flosculis liguliferis ca. 13, ligulis 
flavis; floribus disci numerosis са. 70; acheniis glabris. 
Specimens examined: 
New Mexico: Mule Spring, May, 1851, Geo. Thurber, 280 (Gray 
Herb.), TYPE; Organ Mountains, Dona Ana Co., 25 April, 
1907, E. O. Wooton, 3370 (Mo. Bot. Gard. Herb.). 
This species is related to S. neo-mexicanus Gray, to which it 
has been usually referred, but from which it differs in having 
a more leafy stem, undivided leaves, and with the stem-leaves 
commonly ampliated into a more or less dentate half-clasping 
base, and finally in having glabrous instead of hirtellous achenes. 
