170 



Terebinthus Macdougali Rose sp. nov. 



A shrub or small tree : bark of one- and two-years old branches 

 reddish, smooth : leaves clustered at the ends of short spurs, 

 either simple or with 3 to 5 leaflets ; rachis of compound leaves 

 winged ; petioles short ; blade oblong, obtuse, i to 1.5 cm. long, 

 crenately toothed, with very short dense pubescence on both sur- 

 faces : male flowers borne in short racemes or panicles ; sepals 

 and petals densely pubescent ; female flowers solitary ; peduncles 

 very short, 4 mm. long, glabrous. [Fig. 5.] 



A species common on the hills near the head of the Gulf of 

 California, first collected by Dr. E. Palmer in 1870 and recently 



Fig. 5. Terebinthus Macdougali Rose. A photograph taken at San P'elipe Bay, 

 Lower California, February, 1 904. 



collected in the same region by Dr. D. T. MacDougal, after 

 whom I take great pleasure in naming it. 



It has heretofore been confused with B. Hindsiaiia of southern 

 Lower California, from which, however, it seems quite distinct. 

 It differs in its more vigorous branches, reddish instead of blackish 

 bark on one- and two-years old shoots, somewhat thicker leaves 

 and leaflets, shorter and denser pubescence on leaves, more 

 pubescent petals, etc. 



