1 42 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



EXPLANATION OF PLATE IX. 



All parts of the flowers are 5 times actual size. 



Fig. I. Synthyris alpina Gray. 



a. Flower. 



b. Calyx. 



c. Lower part of corolla. 



d. Upper part of corolla. 

 Fig. 2. Synthyris Rittcriana, sp. nov. 



a. Flower. 



b. Calyx. 



c and d. Lower part of two diflerent corollas. 



e. Upper part of corolla. 

 Fig. 3. Synthyris reflexa, sp. nov. 



a. Flower. 



b. One of the equal divisions of the calyx. 



c. Lower part of corolla. 



d. Upper part of corolla. 



