DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN. 279 



the corymbose-paniculate inflorescence to attenuate bracts: 

 heads 10 to 12 mm. high, discoid, 35-4o-flowered: involucre 

 narrowly campanulate, calyculate with rather conspicuous 

 bracteoles and, as well as the peduncles, pubescent with spread- 

 ing hirsutish hairs; bracts of the involucre usually 13, lanceolate, 

 ^cutish, slightly penicillate-tipped and, as well as the corollas, 

 more or less purplish : achenes striate-ribbed, glabrous. Monogr. 

 Senecio, I Th. 25 (1901) & in Engl. Bot. Jahrb. xxxii. 21 (1902), 

 without complete characterization. MEXICO. State of Oaxaca: 

 Cerro de San Felipe, altitude 3,000 m., 14 November, 1897, C. 

 Conzatti & V . Gonzdlez, no. 559 (hb.Gray), type; Oaxaca, altitude 

 i,75om., July-August, 1900, C. Conzatti & V. Gonzalez, no. 1,003 

 (hb. Gray) ; Hacienda de Caciques, District of Cuicatlan, altitude 

 2,130 m., 14 August, 1895, Rev. Lucius C. Smith, no. 613 (hb. 

 Gray); mountains of Oaxaca, Cuming (hb. Gray). 



Senecio ( Mulgedifolii) decorus Greenm. 



Stem erect, striate-grooved, glabrous or nearly so, more or 

 less purplish; leaves runcinate--pinnatifid, 0.5 to 2.5 dm. long, 



2 to 14 cm. broad, glabrous above, arachnoid-pubescent beneath; 

 terminal lobe largest, somewhat triangular-acuminate; lateral 

 lobes lanceolate to oblong-lanceolate, acuminate, acute, margin 

 dentate with horizontally spreading and slightly unequal teeth; 

 upper stem-leaves sessile and amplexicaul: inflorescence a term- 

 inal rather compact panicle: heads 12 to 15 mm. high, not in- 

 frequently somewhat nodding, discoid: involucre campanulate, 

 conspicuously calyculate with broadish bracteoles: bracts of 

 the involucre lance-linear and acute to somewhat oblong and 

 slightly expanded above the middle to an obtuse apex, glabrous, 

 the inner with scarious and slightly lacerated margins: flowers 

 35 to 45; corollas exceeding the involucre and, as well as the 

 bracts and bracteoles, reddish-purple: achenes striate-ribbed, 

 glabrous. Monogr. Senecio I Th. 25 (1901) & in Engl. Bot. 

 Jahrb. xxxii. 21 (1902). GUATEMALA. Department of Zacate- 

 pequez: Volcan de Agua, altitude 3,350 m., April, 1890, John 

 Donnell Smith, no. 2,361 (hb. Gray); Todos Santos, altitude 

 3,045 m., 26 December, 1895, E. W. Nelson, no. 3,637 (hb. Gray, 

 and hb. U. S. Nat. Mus.). 



Senecio ( Mulgedifolii) jacalensis Greenm. 



An herbaceous perennial: roots fleshy-fibrous: stem erect, 



3 dm. or more high, from a thickish perennial base, rather leafy, 

 striate, below glabrous, above especially in the inflorescence 

 pubescent: lower leaves oblanceolate, 0.5 to 1.5 dm. long, 1.5 

 to 2.5 cm. broad, obtuse or acute, shallowly callous-dentate, 

 narrowed below into a winged petiole, glabrous on both surfaces; 

 upper stem-leaves sessile, amplexicaul, acuminate and more or 

 less imbricated on the stem: inflorescence subracemose or pani- 

 culately racemose: heads large, 13 to 15 mm. high, discoid, not 

 infrequently somewhat nodding: involucre campanulate, calycu- 

 late with rather large bracteoles, glabrous or slightly pubescent 



