i6o Sierra Blanca Yucca 



The wood of the Sierra Blanca ^-ucca is hght and porous. The fibrous leaves 

 and the fibers taken from them are used by the Indians like those of the Yuccas. 



The genus, of which this species is the type, consists of 2 known species, the 

 other being Mexican. Its name is in honor of Samuel Farlow Trelease, son of 

 the author of the genus. 



