94 MINNESOTA STUDIES IN PLANT SCIENCE 



Plate XII 



Section Micranthes. I, follicles of S. Forbesii; 1, seeds; from MBG 84582; II and 

 III, ventral views of mature follicles; II, from MBG 83820; III, from MBG 775263; 

 IV and V, dorsal and lateral views of carpels ; IV, from MBG 83859 ; V, from MBG 

 83862 ; VI, dorsal ; VII, ventral views of young carpels ; 2, petals ; 3, sepals ; 4, stamen 

 and filaments drawn from Vasey's specimen collected in Illinois, June, 1875 (MBG 

 84223) ; 5, seed; drawn from a specimen collected by Eggert near St. Louis, Missouri 

 (MBG 84480). 



VIII. Follicles of 5". purpuripetala; 6, petal; 7, seeds of same; drawn from a 

 specimen collected by Ferdinand Blanchard at Peacham, Vermont (MBG 751775) ; 

 IX, dorsal view of a mature carpel of 5". purpuripetala ; 8, two petals; 9, speals; 10, 

 stamens; drawn from MBG 751771, Ferdinand Blanchard, Peacham, Vermont. 



X. Follicles of 5". pennsylvanica; XI, ventral view of a mature follicle; XII, 

 dorsal view of a young carpel ; 12, petals ; 13, sepals ; 14, a seed ; drawn from a speci- 

 men collected by G. P. Ashcroft, Munson, Indiana (UMH) ; XIII, mature follicles; IS, 

 a seed ; drawn from a specimen collected by C. H. Bissell, No. 69, near Southington, 

 Connecticut (MBG 84187) ; XIV, ventral view of an immature follicle; 16, a petal; 

 drawn from a specimen collected by Thomas Morong near Cambridge, Massachusetts 

 (MBG 84^) ; XV, ventral view of young carpel; 17, three petals; 18, a sepal; 19 and 

 20, seeds from different specimens of 6". pennsylvanica; 19 (MBG 84473), Redfield No. 

 2010 (MBG 84481) ; 21, common types of glands of hairs occurring in S. pennsyl- 

 vanica. 



XVI. Follicles of 5". crassicarpa; XVII, dorsal view of a mature follicle (drawn 

 on reduced scale) ; 22, petal ; 23, a sepal ; 24, a filament ; drawn from a specimen col- 

 lected by H. Eggert in Wisconsin (MBG 83863); XVIII, XIX, dorsal views of 

 two young carpels; XX, a more advanced carpel of same; 25, a petal; 26, a sepal; 

 27, a stamen ; 28, a bract of inflorescence ; 29, gland of hair ; drawn from a specimen 

 collected by Virginius H. Chase near Wady Petra, Illinois (MBG 84469). 



