302 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
equal, 4 to 5 em. long; pedicels 4 to 5 mm. long; involucre wanting; bractlets of 
involucels several, linear, 3 to 4mm. long; fruit ovate, 4 to 5 mm. long; stylopodium 
stout, conical. 
Collected by C. A. Purpus at Boeca del Monte, Puebla, Mexico, June, 1907 (no, 
2509). . | 
Type U.S. National Herbarium no. 574890. 
Prionosciadium humile Rose. 
Peucedanum madrense 8. Wats. Proc. Am. Acad. 25: 150. 1890. 
On account of an earlier published Prionosciadium madrense a new specific name is 
here given to this species. 
