DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN. 283 



of Agua, 15 February, 1905, W. A. Kellerman, no. 4,706 (hb. 

 Field Mus.). 



Senecio ( Palmatinervii) lanicaulis Greenm. 



Shrub: stem, at least above, densely lanate-tomentose : leaves 

 petiolate, subrotund to reniform, cordate, palmately 7-9-nerved, 

 0.7 to 2.5 dm. broad, shallowly sinuate-lobed, margined with 

 unequal conspicuous more or less curved mucronulations, at 

 first tomentulose above, densely and permanently lanate-tornen- 

 tose beneath; petioles stout, 0.3 to 1.5 dm. long: inflorescence 

 a terminal many-headed lanate-pubescent compact compound 

 corymb; bracts setaceous: heads i cm. high, radiate: involucre 

 narrowly campanulate, calyculate, tomentulose at the base, 

 glabrous above; bracts of the involucre about 13, lanceolate 

 to lance-oblong, acutish, essentially glabrous, the inner scarious- 

 margined: ray-flowers 6 to 8; ligules 4-nerved: disk-flowers 

 12 to 20, exceeding the involucre: achenes striate, glabrous. 

 Monogr. Senecio, I Th. 26 (1901), & in Engl. Bot. Jahrb. xxxii. 22 

 (1902), without complete characterization. MEXICO. State of 

 Chiapas: near Pinabete, altitude 1,800 to 2,400 m., 8 February, 

 1896, E. W. Nelson, no. 3,771 (hb. Gr., and hb. U. S. Nat. 

 Mus.). GUATEMALA. Department of Quiche": Chiul, altitude 

 2,400 m., April, 1892, Heyde & Lux, no. 3,377 (hb. Gray), exsic- 

 catae of John Donnell Smith. 



Senecio ( Palmatinervii) Langlassei Greenm. 



Shrub 3-4 m. high: leaves petiolate, palmately nerved, ovate- 

 rotund in general outline, 1-2 dm. long, equally broad, 7-13- 

 lobed, densely granulose on the upper surface with hirsutish 

 hairs intermixed, especially on the nerves, white-tomentose 

 beneath as well as on the petioles; lobes mucronate-apiculate, 

 denticulate-margined: inflorescence a terminal round-topped 

 many-headed paniculate cyme: heads i cm. or less high, radiate: 

 involucre narrowly campanulate, sparingly calyculate; bracts of 

 the involucre narrowly oblong-lanceolate, acutish, scarious- 

 margined, dorsally granulose-glandular, thickened along the 

 median line: ray-flowers 6 to 8 with a slender 5 mm. -long puber- 

 ulent tube equalling the narrowly oblong 4-nerved yellow ray: 

 disk-flowers 15 to 20: achenes glabrous. Monogr. Senecio, I 

 Th. 26 (1901) & in Engl. Bot. Jahrb. xxxii. 22 (1902), without 

 complete characterization. MEXICO. "Etats de Michoacan et 

 de Guerrero," Sierra Madre, altitude 1,600 m., 21 April, 1899, 

 E. Langlasse no. 1,005 (hb. Gray, and hb. Roy. Bot. Mus., 

 Berlin). 



Senecio ( Palmatinervii) reg-lensis Greenm. 



Stout herbaceous perennial, i to 2 m. high: stem glabrous, 

 smooth, brownish-lineolate at least above: leaves petiolate, 

 palmately nerved, ovate-rotund, 5 to 7 cm. or more long, nearly 

 or quite as broad, rather deeply 5-7-lobed, hirsutish-pubescent 

 on both surfaces especially beneath; lobes acute mucronate- 



