88 MINNESOTA STUDIES IN PLANT SCIENCE 



Plate IX 



I. Follicles of 6". Hallii; II, dorsal; III, ventral views of immature follicles; IV. 

 ventral side of a young carpel; 1, petals; 2, sepals; 3, stamen and a filament showing 

 variation ; 4, bracts of the inflorescence ; 5, glands of the hairs ; drawn from Elihu 

 Hall's No. 151, Oregon (MBG 84380). 



V. Follicles of S. microcarpa; VI, dorsal ; VII, ventral views of a single follicle ; 

 6, petals ; 7, sepals ; 8, stamen and a developed filament ; 9, bract of the inflorescence ; 

 10, glands of the hairs; drawn from M. J. Elrod's No. 98, from Missoula, Montana, 

 Herbarium of the University of Montana. 



VIII. Immature follicles of 5". klickitatettsis; IX, ventral; X, dorsal sides of a 

 single follicle; 11, petals; 12, sepals; 13, stamen; 14, bract of inflorescence; 15, hairs 

 and their glands ; drawn from a specimen collected by W. N. Suksdorf in West 

 Klickitat Count>', Washington (USNH 45806). 



XL Flower of 5. virginimsis, with parts cut away to show young carpels and 

 gland ; 16, stamens at different stages of development ; drawn from J. H. Sandberg's 

 collection from Two Harbors, Minnesota ; 17, 18, and 19, various forms of petals 

 found in different collections of 5". virginiensis; 17. from Milford, Pennsylvania, C. A. 

 Mill, collector (MBG 84374); XIV, XV, XVI, young carpels of same; 18, from 

 Sandberg^s collection from Two Harbors, Minnesota; 19, from Southington, Con- 

 necticut, C H. Bissell, collector. No. 272 (and 813) (MBG 84364) ; 20, bracts of 

 inflorescence; 21, glands of hairs from different specimens; 22, seeds; XII, two 

 carpels with the parts of flower cut away; XIII, ventral side of single carpel showing 

 depth of the adherent receptacle; XII-XVI, and 22, drawn from Dr. J. M. Green- 

 man's No. 629, from Stony Brook, Massachusetts (MBG 7Z^79). 



