l86 CALIFORNIA ACADEMY OF SCIENCES. 



Southern California {Palmer, 1875, No. 42). Intermediate between C. 

 apinosus and C. integer rimus. — ^Trelease in Proc. Cal. Acad. ser. 2, i, 109 

 (1888). 



T3^pical C. spijiosHS, as far as our present knowledge 

 goes, is confined to the vicinit}^ of Santa Barbara. It not 

 unfrequently assumes a tree form which in size of trunk 

 is second only to C. thyrsijiorHs. The lateral nerves of 

 the leaves are often developed, and the leaves of young- 

 bushes are strongly serrate toothed. The flowers are 

 usually pale blue — sometimes white. No. 13. 



The variety is common on the lower slopes of the 

 mountains bordering the San Joaquin Valley and of the 

 southern part of the State, extending southward as far as 

 Mount San Pedro Martir, in Baja California. It ordina- 

 rily has usually 3-nerved leaves, and like all the species of 

 this section, as well as C . integer rimus, is either green or 

 glaucous. The flowers are commonly blue but occasion- 

 ally white, and in the form found on San Pedro Martir. 

 which answers best to C . divaricatus var. grosseserratus, 

 deep purpHsh blue. No. 10, Nuevo, San Diego County; 

 No. II, Pasadena, Los Angeles County; No. 12, Tehach- 

 api, Kern County; No. 108, San Pedro Martir, in Baja 

 California. No. 68 is a hybrid of C. sfinosiis and C. 

 Jiirsiitiis. 



C . sfinosas in all its forms is best marked by the 

 rounded, extremely resinous fruit. In the fresh state it is 

 not all triangular, and is quite destitute of protuberances. 

 For the varietal name, in some doubt as to the identity of 

 the first, I have preferred to take the most recent. The 



Douglas and of Coulter; nor is the i^ubescence on their ribs quite so evi- 

 dent. Some of the leaves are slightly cordate.— (?/•«;/ il/s,s. Pac. R. Eep. 

 iv, 75 (1857). 



tC. EGLANDULOSus. G . divaricatus, var. eglcmduloms, Torrey, Pac. R.E. 

 Eep. iv. 75. C. divaricatus, Watson, I. c. in part.— Mountains of Califor- 

 nia and Lower California.— Trelease in Proc. Cal. Acad. ser. 2, i, 110 (18SS). 



