becember 20, 1905 91 



locally abundant, growing in sandy soil. The first specimen 

 cited is "Cooper, Soda Lake, Fort Mohave, 1860-61," and prob- 

 ably is intended for the type. 



TiTHYMALUS CRENULATUS (EngeliTi.) Heller, Muhlenbergia, 1: 



55- 1904- 

 Euphorbia crenulata Engelm. Bot. Mex. Bound. 192. 1859. 



Euphorbia leptocera Engelm.; Boiss. DC. Prodr. 15: Part 

 2, 143. 1862. 



No. 7981, collected June 5, along the railroad a short dis- 

 tance below Shasta Springs, Siskiyou county, the plants grow- 

 ing in rich loose soil, and plentiful. Originally collected near 

 Monterey by Hartweg, but widely distributed in the state. 



CELASTRACEAE 



PachystiMa myrsinites (Pursh) Raf. Am. Monthly Mag. 3: 

 176. 1818. 



Ilex myrsinites Pursh, Fl. Am. Sept. 1: 119. 1814. 



Myginda myrtifolia Nutt. Gen. 1: 109. 1818. 



Oreophila myrtifolia Nutt; T. & G. Fl. N. A. 1: 259. 

 1838. 



No. 7976, collected June i, along the Sacramento river near 

 Shasta Retreat, Siskiyou couny. A low shrub, not uncommon 

 on wooded slopes, elevation 2400 feet. According to descrip- 

 tion this cannot be referred to P. macrophyllum Farr, Trans, 

 and Proc. Bot. Soc. Penna. 1: 412. 1904. 



ACERACEAE 



Acer ciRCiNATUM Pursh, Fl. Am. Sept. 1: 266. 1814. 



No. 7923, collected June i, at Dunsmuir, Siskiyou county, 

 just above the town along the river. A shrub 8 or 10 feet high 

 with no tendencv to be vine-like* 



