212 CALIFORNIA ACADEMY OF SCIENCES. 



the type locality C eanothiis -pinetoruin was collected on a 

 sand bar of the Kern River, near Kernville, in 1891, in 

 flower. Its flowers were blue. The form described as 

 C. yepsonii is common at middle elevations in Lake 

 County, where it is a very rigid bush 4-7 feet high, 

 with rather large white flowers. This form is farther re- 

 moved than any of the others from typical C . prostratus, 

 but it is brought nearer by the coast forms. Thus at 

 Liberty's, Marin County, and similar elevations of a few 

 hundred feet in that neighborhood, it is still a rigid up- 

 right bush, but with blue or purple flowers; while on the 

 neighboring flanks of Tamalpais at elevations of 2000 

 feet or more its branches droop often to the ground, 

 much in the manner of the variety divergens. No. 79 

 (C. yepsonii), Bradford, Lake Count}^; No. 80, Tam- 

 alpais; No. 81, hybrid of C. cuncatns and C. yepsonii. 



Named Hybrids. 

 L Hyhi'ids of Eiiceaiiof/iiis. 



It was formerly the custom, now happily somewhat 

 fallen into neglect, to describe species from plants prop- 

 agated in gardens, with small inquiry as to their origin. 

 To this practice we owe all the specifically named hybrids 

 of Euceanothus. Nearly all of them were produced by 

 the crossing of C. Aniericanus and C. aziireus, and their 

 deri\-ation was probably suspected in most cases, as may 

 be seen by occasional notices in gardening journals.* 



obtuse, or even traucate at both ends, the whole margin coarsely and sa- 

 iienily spmose-toothed: fi. iu short-pediincled simple clusters at the ends of 

 all the brauchlets, large, dark bine, varying to white: fr. large, iiromiuent- 

 ly3-horned. — Open hills in Marin County, near San Geronimo and north- 

 ward. Confused with the preceding by Parry. ^-E. L. Greene in Manual 

 of the Bay Kegion Botany, 78 (1894). 



* "One of the most remarkable of the novelties refei'red to was a fine 

 hardy variety of Ceanothus, called C. azureus latifoUns; this had been se 



