git] MACDOUGAL—OVARIAL TREATMENTS 257 
from upper part of mature rosette; 5, stem leaf; 6, bract; 7, unopened bud; 
8, flower with petals removed; 9, petals of maximum size; zo, mature cap- 
sule; 7-5, one-half natural size; 6-r0, ie size—From Publ. no. 24, 
Chroegic Institution of Washingt. 1905 
PLaTteE XVI.—Derivative of Gessolledess biennis: 11, leaf of young rosette; 
12, leaf from mature rosette; 13, leaf from mid-stem; 14, leaf from upper 
part of stem; 75, bract; 16, flowering branch; 17, flower stripped of corolla; 
18, petals; ro, capsule and bract. 
