Contr. Nat. Herb., Vol. 22. 



Plate 48. 



A. Purple Clematis (Clematis columbiana), in Fruit. 



Ahout half natural size. A woody ^'''J^^^.f^owm^^^^^^ altitudes. Flowers with four large purple 



B. White Dryad (Dryas octopetala), on Rocks of Triple Divide Peak. 



Flowers white, with eight petals. A common plant above timber line. Photograph by H. T Cowling- 



trom National Park Service. 



