88 University of Cdlifornia Puhlications . [botany 



Potentilla gracilis fastigiata (Nuit.) ^Y(^is. P. fastigiaia Nutt. 

 This variety grows sparingly in the meadows of Thomas 

 Valley, at 4500 ft. alt. (No. 2184.) 



Potentilla gracilis rigida Wats. P. Nuttallii Leioi. 



Collected in Tahqnitz Valley, altitnde 8000 ft. (No. 2356. ) 



Potentilla lactea Greene, Pitt. iii. 20 (189G). P. (/Idiididosa 



lactea Greexe, F1. Fr. 65 (1891). 



Plentifnl in some of the meadows of Tahqnitz Valley at abont 

 8000 ft. alt. (no. 2355, verified by Professor Greene).- Also 

 common at 9200 ft. alt. in Ronnd Valley, where an examination 

 of living specimens showed that the bractlets were sometimes 

 entii'e and acnte bnt nsually toothed or even divided, the stamens 

 22-24, and the bractlets, sepals, and petals often 6 each in 

 nnmber. (No. 2400.) 



Prunus demissa Walp. Western Choke-cherry. 



In the Lower Transition on Fullers Ridge and in Onstatt 

 Valley. 



Prunus emarginata Walp. Cerasus Californica Greene, F1. 



Fr. 50 (1891). Red Cherry. 



More plentiful than the last and extending nearly throughout 

 the Transition Zone, forming dense thickets in parts of Tahqnitz 

 Valley. In pubescence this form approaches the variety mollis 

 of Brewer.* The shrubs vary in height from 6 to 12 ft. 



Rosa Californica C. tD S. Wild Rose. 



Along streams of the south and west sides below 6000 ft. alt. 



Rubus parviflorus Xutt. E. NutJianus Mog. Thimble-berry. 

 Common near water-courses throughout the Lower Transition 

 and occasional in the Upper Transition, reaching an altitude of 

 9000 ft. in Round Valley. (Nos. 318, 782.) 



LEGUMIN0SJ5. 



Amorpha Californica Nutt. A. hispidula Greene, F1. Fr. 14 



(1891). 



This occurs as a low shrub in the lower part of Tahqnitz 

 Valley, and in Onstatt Valley. (No. 2454.) 



*Cf. Parish,-Zoe iv. 342 (1894). 



