68 PROCEEDINGS OF THE AMERICAN ACADEMY, 



Apparently nearest R. rosea (Nees) Hemsl., which is said, however, to 

 have the obtuse leaves short-petioled, the stem angled, and the rose- 

 colored corolla 2 inches long. 



BiDENS ROSEA Sch. Bip., var. aequisquama Fernald, n. var., invo- 

 lucri squamis subaequalibus, eis seriei exterioris elongatis 5-8 mm. 

 longis. — Thickets near Uruapan, Michoacan, Mexico, alt. 1525 m., 

 1 November, 1905, C. G. Pringle, no. 10,109 (type, in hb. Gray). 

 Differing from B. rosea in the very elongate segments of the outer in- 

 volucre, which in the original description of the species is said to be 

 shorter than the inner, and which in herbarium specimens measures 

 2-4 mm. long. 



