74 MINNESOTA STUDIES IN PLANT SCIENCE 



Plate II 



F, follicles of the section Chionophila; m, young stage of same, dorsal aspect; gl, 

 gland; G, follicles of the section Micranthes; n, young stage of same; gl, gland; fl, 

 flange of the gland; H, follicles of the section Tricarpum; o, yoimg stage of same; 

 gl, gland ; fl, flange of gland ; p, p, p, types of hairs in sections Chionophila, Micran- 

 thes, and Tricarpum; I, capsule of the section Arabisa; s, young stage of same; gl, 

 gland; J, capsule of the section Heterisia; r, young stage of same; gl, gland; q, tjrpe 

 of hair in sections Arabisa and Heterisia. 



