DEC. 1907. SPERMATOPHYTES FROM MEXICO GREENMAN. 287 



cronate-acute ; petioles 1.5 to 10 cm. long, estipulate, pubescent: 

 inflorescence a terminal many-headed open panicle; bracts of 

 the inflorescence more or less foliaceous, ovate-oblong, lance- 

 elliptic to linear, dentate to entire: heads about i cm. high, 

 i8-22-flowered: involucre narrowly campanulate; bracts of the 

 involucre linear-lanceolate, 8 mm. long, acuminate, acute, 

 pubescent with jointed hirsute hairs intermixed with a glandular 

 puberulence: flowers bilabiate; the outer lip of the exterior 

 circle of flowers ligulate, 3 mm. long, spreading, pale yellow or 

 whitish: pappus exceeding the involucre, setulose, silvery white: 

 immature achenes narrowed above, pubescent. MEXICO. State 

 of Michoacan: Uruapan, collection of 1906, C. G. Pringle, no. 

 10,357 (hb. Gray; fragment and photograph in hb. Field Mus.)- 



