38 Contributions from the Gray Herbarium 
DD. Leaves not abruptly contracted be- 
low the middle, scarcely rough 
above. 
Rays about 8; ok ae 
Rays 14-20; disk 1.5-2 em. thick. 
Y. Involucre 3.5-6.5 mm. high, EE. 
EE. Leaves 8-12 mm. long ....40. V. microphylla. — 
ves FP. “ 
a ra 
; ves © 
y jagged-serrat : an 
35. V. 
FP. Leaves finel mI reticulate be 
th, entire. isn oneen Y'V. reticulata, e 
FF. Leaves merely serrate or subentire, not finely — 

