114 CALIFORNIA ACADEMY OF SCIENCES. 



31. C. VERRUCOSUS, Niitt. in Torr. & Gray, Fl. i. 267: 

 Greene, Bull. Cal. Acad. ii. 81. C. cuneatus, Watson, I.e. 

 338, and Index, 164, in part. — Southern California and 

 Lower California. 



32. C. MACROCARPUS, Nutt. in Torr. & Gray Fl. i. 267; 

 Greene, I. c. C. cuneatus, Watson, I. c. 338, and Index, 164, 

 in part. — Coast Range of Middle and Sontliern California. 



NOTES. 



C. sanguineus appears to differ from all other species of 

 the genus in flowering from wood of the preceding season's 

 growth; otherwise, it is related in several respects to Nos. 4 

 and 5. 



C. micTophyllus and serpyllifoUus — very closely related to 

 each other — show no very great aflinity for other groups. 

 For convenience they are placed where they now stand, al- 

 though in the character of the inflorescence, they approach 

 the dentatus group. I have no fruit of either. 



While C. ovatus is well marked in its typical Eastern 

 form, it passes gradually into var. pubescens in the West, and 

 through this approaches Americanus in its leaf-forms. The 

 leafiness of flowering branches is sometimes quite variable. 



In C. spbiosas, the firm leaves commonly turn brown in 

 drying, especially the upper surface; the branches of the 

 ample somewhat leafy loose thyrsus mostly spread at right 

 angles or are even recurved; and the flowers are scarcely 

 more than lilac-colored. 



C. parvifolius appears to be distinct from integerrimus in 

 its loose low habit, smaller leaves scarcely exceeding 25 

 mm. in length, the majority of them not 3-nerved, and in 

 its smaller oblong or (from the falling of the lower fasci- 



