URTICACE.E. 455 



3. Euphorbia dictyosperma, Fiscli. & Meyer. 



Euphorbia dictyospermiim, Fisch. & Mey. Ind. Sem. Petrop. 1835; Engelm. in Bot 



Mex. Bound. Kep. p. 191. 

 E. Arkamana, Engelm. & Gray, PI. Lindl. 1, p. 26 ; Gray, Man. Bot. ed. 2, p. 388. 



Hab. Valley of the Kooskooskee; a common western species. 



4. Euphorbia crenulata, Engelm., I. c. 



Hab. Near San Francisco, California.— The specimens are without 

 flowers or fruit, but there can be no doubt of their identity with Engel- 

 mann's plant. 



Ord 78. URTICACEA 



1. UETICA, Tourn. 

 1. Urtica dioica, Linn. 



Hab. Ravines near San Francisco ; probably not indigenous. There 

 are also specimens in the collection of an Urtica collected in woods 

 near Paget Sound, which may be only a state of U. dioica. It is very 

 sparingly bristly; the leaves larger and thinner, broadly ovate-cordate, 

 and very coarsely toothed. Its unusual characters are probably owing 

 to the plant having grown in a shady place. [The specimens in herb! 

 Torrey. belong to U. dioica and U. holosericea, Nutt.] 



