1 



t 



b 



66 BOTANICAL GAZETTE • [july 



Doiiglasii which, although it flowers ten days later, it otherwise resembles 

 except in the color of the fruit. This interesting plant has been collected at 

 different times between 1896 and 1902 by Mr. C. V. Piper (nos. 2358, 



2454, 3599. 3810, and 3826).=^ 



The following synopsis of the species of the Douglasae group may 

 aid in the determination of the species: 



Anthers slightly tinged with rose color; calyx -lobes entire or minutely den- 

 tate, sparingly villose on the inner surface; fruit short -oblong to subglobose; 



on the inner face by shallow longitudinal grooves. 



gul 



rsely 



rate, usually lobed toward the apex, more or less villose while young, gen- 

 erally becoming glabrous; stamens 5-20, normally 10; spines numerous, 



usually short and stout i. C Douglasii. 



Leaves thinner, lanceolate to oblong-obovate, acute at the ends, finely serrate, 

 not lobed, covered above while young with soft white hairs, soon glabrous; 

 stamens 10; spines few, long and slender or wanting , . . 2. C. 

 rivularis,^ 



— C. S. Sargent, Arnold Arboretum, 



2 C. Gaylussacia Heller (Bull. South. Cal. Acad. Sci. 2:68. 1903) is one of the 

 black-fruited group and was collected by Heller, August 20, 1902, at Sebastopol in 

 Sonoma County, California. Flowers have not been seen, and I suspect that it will 

 turn out to be one of the small-fruited forms of C Douglasii. The leaves are smaller, 

 however, and rather thinner than those of the ordinary forms of that species, and they 

 are still slightly hairy on the upper surface at the end of August when the fruit 

 appears to have been fully ripe. 



3 C. rivularis is a more southern species than C Douglasii and is confined to the 

 interior of the continent. It is most abundant on the Wasatch Mountains of Utah and 

 ranges to southwestern Colorado and western Wyoming. 



