SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 35 
Flora of Clifton, Arizona. IIl.* 
BY A. DAVIDSON, C. M., M. D. 
ZYGOPHYLLACEA. 
Tribulus grandifiorus B. & H. Widely distributed. Sept. 
Tribulus maximus [L. Very common. Sept. 
Tribulus terrestris L. Lordsburg. 
Peganum mexicanum Gray. Local at Clifton. 
Larrea mexicana Morice. Common at 4,000 ft. alt. 
GERANIACE. 
Geranium cespitosum James Metcalf. Sept. 
Erodium texanum Gray. Clifton. April. 
Oxalis violacee IL. Metcalf. Sept. 
RUTACEA. 
Thamnosma texana Torr. Longfellow. April. 
Ptelea baldwinii T. & G. Stream banks above 4,000 ft. alt. 
ANACARDIACEZ. 
Rhus copallina L. Metcalf. Not found in fruit. 
Rhus glabra L. Metcalf. May. 
Rhus canadensis trilobata Gray. Freely distributed and va- 
riable. 
Rhus microphylla Engelm. Ward’s Canyon. May. 
RHAMNACE. 
Ceanothus fendleri venosus ‘Trealease. Above Metcalf. Sept. 
Ceanothus greggi Gray. Metealf. Sept. 
Sageretia wrightii Wtas. Blue River. Sept. 
Rhamnus californica betulefolia Trealease. Blue River. 
SAPINDACEA. 
Sapindus drummondi H. & A. Higher ravines. 
Acer grandidentatum Nutt. Metcalf. 
Acer negundo L. Blue River. 
POLYGALACEZ. 
Monnina wrightii Gray. Rocky hillsides. May. 
VITACEZ. 
Vitis arizonica Engelm. Frequent above 4,000 ft. alt. 
*Continued from Page 18, Vol. TV, No. 1, January, 1905. 
