P. - ( - r. d e paup^i -pilose. 
B3 
P. ^ var. 
P. linearifoliuin Scribn, -.^S-.^'^-tt.-’A 
P. lin., var, Werneri (Scribn.) 
P. microcarpon Muhl, 
P, mattaniuskeetense Ashe. 
P. Glutei Nash. 
P, annulum Ashe. 
P. boreale Nash. ^ 
P. dichotomum 1. 
spre;^in Schulte s. ^ ^ t ^4/ 
^ 
P. minutulum Pesv. (P. Wrightianum) 
, >■■ '. 
V 
