268 
IOWA ACADEMY OF SCIENCE Vor. XXIX, 1922 
nal range varies greatly, from nearly sea level to 6,500 feet and 
over. We find this species represented in I. S. C. herbarium from 
the following localities in California. 
Yosemite, Mariposa Grove, California (L. H. Pammel) 
Yosemite Valley, Glacier Point, California (E. H. Pammel) 
San Francisco, California (C. C. Parry) 
North American Pacific Coast (2 specimens) 
Monterey 
Yosemite, Merced Canyon between El Portal and Power 
Plant (E. H. Pammel) 
Belden, California (E. H. Pammel) 
Patterson, somewhat pubescent leaves (E. H. Pammel) 
Fairfax, California (Katherine Jones) 
Eos Angeles County, California (H. E. H.) 
Also in the canyons of the mountains near Pasadena, the 
Sierra Madre (E. H. Pammel) 
The so-called Rhamnus rubra (Green) is evidently nothing 
more than a form with reddish glabrous twigs and narrowly 
obovate or oblong lanceolate leaves. We have this from Butte 
County, Forest Range, altitude 2400' feet, No. 11404 (A. A. Hel- 
ler), between upper Soda Springs and Shasta Retreat. 
Rhamnus foment ellus Benth. This is the R. Calif ornica var. 
tomentella Brewer and Watson. It is a rather low spreading shrub 
with leaves and twigs densely tomentose below. It is a very 
striking shrub, growing in rather dry soils and on banks of 
streams. From a distance it has the aspect of an olive tree. We 
have it in the I. S. C. herbarium as follows : 
Eive oak, California, banks of Feather River (E. H. Pam- 
mel) 
Merced Falls, banks of Merced River (E. H. Pammel) 
California 1889 (C. C. Parry) 
California Mountains 
Blairsden (E. H. Pammel) 
Gridley (E. H. Pammel) 
Marysville Butte (No. 11358) (A. A. Heller) 
Mud Flat, Newville, Covelo road Glenn County, (No. 11534) 
(A. A. Heller) 
Rhamnus Purshiana DC. The sagrada is found only in the 
mountains of northern California and in the coast range, general- 
ly north of the Bay region to Oregon and Washington. It is a 
small tree with slightly pubescent twigs, leaves thinner than the 
California buckthorn, mostly thin and dull green, petioles pube- 
scent. We have it in the herbarium from : 
Mill Valley, California with Sequoia sempervirens (E. H. 
Pammel ) 
