Plate III. 



Fig. 1. Seedling of Claytonia megarrhiza Parry. 



— 2. Claytonia Sibirica L. 



— 3. Claytonia diffusa Nutt. 



— 4. Claytonia Hnearis Do ugl. 



Figs. 1 — 4 are drawn in natural size. 



XXI. 



