VOL. IV.] Writings of Edward L. Greene. 8i 



Mr. Greene under the name of ' ' Pittonia " or in his ' ' Flora 

 Franciscana." The references of the few exceptions are given. 

 No attempt has been made to verify all of the species. To do so 

 would, in many cases, necessitate the partial revision of large 

 genera and the study of priorities, involving an amount of time 

 not now at the disposal of the writer. For these reasons the two 

 score new species and the various genera ' ' instituted ' ' within 

 the limits of the old genus Eritrichium and the numerous species 

 of Delphinium, Trifolium, Potentilla, Krigeron, Cnicus, Senecio, 

 Microseris, etc., are here neglected, as well as many of the 

 of the Cruciferse. Fortunately for the interests of science 

 the larger number of the types are in the herbarium of 

 the California Academy of Sciences. The later ones are 

 being mounted and rendered accessible in the herbarium of 

 the University of California at Berkeley, and if the notes given 

 under the species seem to bear hardly upon the capacity or 

 the judgment of Professor Greene, the means of proof or dis- 

 proof are in most cases at hand. 



Thalictnivi caesium Greene is apparently T.polycarpuni^dXs., 

 but that species is so near T. Fendleri that it is uncertain to 

 which it had better be referred. 



Thalidriun hesperium and C. playtycarpum Greene are forms of 

 T. Fendleri Engelm. Mr. Greene keeps the name up, although 

 he says it "seems almost or quite confluent with T. Fendleri of 

 the southern Rocky Mountains."* 



Ramcnculus Bola)ideri'\ Greene is, according to Dr. Gray, 

 typical R. alismcsfolius Geyer. 



Ranunculus Biolettii Greene is R. pusilliis var. Lindheimeri 

 Engelm. It has been collected by the writer at Folsom, and 

 about ponds near Olema, where it is common, it is often a foot 

 or more in length. 



In Flora Franciscana Mr. Greene describes R. pusillus Poir, 

 and remarks: " Rare in California, though common in the south- 

 ern Atlantic States; found in Napa Valley, Bigelozo, and in 

 Marin Co., / P. Moore. The akenes are either smooth or 

 rough in even the eastern plant, so that the designating of ours 



*F1. Fr.,310. 



fBull. Cal. Acad, ii, 58. 



