276 FIELD COLUMBIAN MUSEUM BOTANY, VOL. II. 



Senecio ( Sanguisorboidei) leonensis Greenm. 



An herbaceous perennial, more or less lanate-tomentose through- 

 out, somewhat glabrate in age: stem 2 to 3 dm. high, leafy at 

 the base, essentially naked above: leaves petiolate, pinnatifid, 

 including the petiole 8 to 12 cm. long, about 3 cm. broad, at 

 first lanate-tomentose on both surfaces, later glabrate: segments 

 or lobes rather coarsely, somewhat unequally and sharply 

 toothed ; the terminal segment subreniform, the lateral ones 

 (3 to 6 on either side) obovate-cuneate, becoming smaller towards 

 the petiole: heads few, about i cm. high, radiate: involucre 

 campanulate, subecalyculate and, as well as the bracteate pedun- 

 cles, tomentulose; bracts of the involucre usually 21, lanceolate, 

 acute, 6 mm. long: ray-flowers about 13; rays oblong, 6 to 7 

 mm. in length, 4-5-nerved: disk-flowers numerous, about 60: 

 achenes pubescent. Monogr. Senecio, I Th. 23 (1901) & in Engl. 

 Bot. Jahrb. xxxii. 19 (1902), without complete characterization. 

 MEXICO. State of Nuevo Leon : Sierra Madre, near Monterey, 

 i June, 1889, C. G. Pringle, no. 2894 (hb. Gray). 



Senecio (Aurei) cyclophyllus Greenman, sp. nov. 



An herbaceous perennial: stem simple, 3.5 to 5 dm. high, 

 sparingly tawny-tomentose at the base and in the leaf-axils 

 otherwise glabrous, striate, purplish: radical and lowermost 

 stem-leaves subrotund, 4 to 7 cm. long, equally broad, cordate, 

 crenate-dentate, green and glabrous above, more or less purplish 

 and sparingly hirsute to glabrous beneath; petioles 5 to 8 cm. 

 long: upper stem -leaves sessile, amplexicaul, lyrately pinnatifid 

 with a relatively large terminal segment and narrowly obovate- 

 cuneate unequally dentate lateral divisions : inflorescence termin- 

 ating the stem in a many-headed subcorymbose cyme; bracts 

 of the inflorescence linear-lanceolate to subulate, tawny-tomentu- 

 lose, purplish-tipped: heads 7 to 9 mm. high, radiate: involucre 

 campanulate, sparingly calyculate with minute bracteoles; bracts 

 of the involucre about 21, lance-linear, 5 to 6 mm. long, acu- 

 minate, acute, more or less purplish-tipped, glabrous: ray- 

 flowers commonly 13; rays orange-yellow: disk-flowers 50 to 

 60: mature achenes 2 mm. long, hispidulous. MEXICO. State 

 of Nuevo Leon: near Monterey, 1906, C. G. Pringle, no. 10,230 

 (hb. Gray), type; Cerro la Scilla, near Monterey, 20 March, 1902, 

 E. W. Nelson, no. 6,672 (hb. U. S. Nat. Mus. and hb. Gray). A 

 species somewhat intermediate in general aspect between 5. aureus 

 L. and 5. Cardamine Greene. From the former it differs in having 

 shorter petioles and a more rotund leaf -blade to the basal leaves ; 

 besides the terminal segment of the stem-leaves is relatively 

 broader and more reniform, and finally the achenes are hispidul- 

 ous. From 5. Cardamine, on the other hand, S. cyclophyllus 

 differs in its larger stature, size of foliage and leafy stem, and in 

 the many-headed inflorescence. 



Senecio ( Aurei) Kosei Greenm. 



An herbaceous perennial: root-stocks rather short, bearing 

 several fleshy-fibrous roots: stem erect, 4 to 4.5 dm. high, un- 



