118 ERYTHEA. 



bloom, Aug. 13, 1898, near Mason's Camp, on Lagunitas Creek. 

 It is quite abundant over a limited area. 



Prunus subcordata Benth. This is described in tbe "Botany of 

 the Bay Region," without definite localities. It seems to me some- 

 what rare in the Coast mountains. We have it in the herbarium 

 of the Academy, from Mt. Diablo, collected by Mrs. Brandegee, 

 and from Kent's Cabin, on the road to Bolinas from Ross Valley, 

 collected by the writer in 1897. 



The Violets of Marin County. 



1. Viola canina L. var. adunca Gray. This is widely distrib- 

 uted, generally found on hills near the sea. 



2. Viola ocellata Torr. & Gray. Not until the spring of 1898 

 have I found this violet in Marin County. It grows on the bare 

 northern slope of Mt. Tamalpais, along the trail leading from the 

 Potrero to Kent's Cabin. It was surprising to find this violet, asso- 

 ciated in my mind with shady woods, growing amid the rocks of a 

 rough trail, and exposed to the unsheltered glare of the sun. It is 

 probably a remnant of a flora which indicates the forests that once 

 clothed that side of the mountain where the traces of former fires 

 tell, how it has been denuded. 



3. Viola glabella Nutt. My attention was called to this by 

 finding it at Mason's Camp, on Lagunitas Creek. In the herbarium 

 of the Academy it is represented by the following specimens: San 

 Gregorio Redwoods, Brannan & Kellogg, May 31, 1870; Paper 

 Mill Creek, M. K. Curnm, May, 1888; Punta de Los Reyes, Dr. 

 Kellogg; Lagunitas Creek, at Lagunitas Station, and the locality 

 above mentioned, collected by the writer. 



4. Viola peduncit/ata Torr. & Gray. This likes low hills 

 where there is no brush. It is too common to specify localities. 



5. Viola sarmentosa Dougl. This is always found in redwood 

 forests, where its bright green leaves and yellow flowers frequently 

 carpet the ground. 



6. Viola praemorsa Dougl. (V. purpurea Kellogg). The 

 plants collected on Mt. Tamalpais grew on the trail leading to the 

 Potrero from the Bill Williams Trail. This slope faces the north. 

 The specimens resemble Hansen's No. 1109, from near Jackson, in 

 Amador County, rather than the form of V. purpurea from the Mt. 

 Diablo Range, described in the " Botany of the Bay Region." 



