82 MINNESOTA STUDIES IN PLANT SCIENCE 



Plate VI 



Section Dermasea. I, mature follicles of S. rufidula; II, lateral; III, ventral; IV, 

 dorsal, views of a single follicle, the latter showing the shallow adherent receptacle; 

 1, petals; 2, sepals; 3, filaments; 4, seeds; 5, a bract of the inflorescence; 6, leaf; 7, 

 receptacle and calyx; drawn from Dr. C. O. Rosendahl's No. 1631, from Mount Arrow- 

 smith, Vancouver Island, British Columbia (UMH). 



V. Dorsal and ventral views of immature carpels of S. laevicaulis; 8, petals; 9, 

 sepals; 10, stamen and filament; 11, pistil of three carpels; drawn from C V. Piper's 

 No. 5061, from Mount Grayback, Oregon (UMH). 



VI. Flower of S. aequidentata; VII, follicles; VIII, more mature follicles; 12, 

 petals; 13, sepals; 14, filament; IS, receptacle and calyx; 16. hairs; drawn from Suks- 

 dorf's No. 967, from Skamania Q)imty, Washington (UMH) ; IX and X, immature 

 carpels, showing gland at base ; XI, pistil of three carpels ; XII, ventral side of young 

 carpel showing depth of adherent receptacle ; 17, petals ; 18, sepals ; 19, filaments ; 20, 

 seed; 21, a bract of the inflorescence; 22, leaves; 23, gland of hair; drawn from a 

 specimen collected by Thomas Howell at Oregon City (UMH). 



