TREES AND SHRUBS 123 



port of the use of our native flora, since this species is native 

 in our mountains. It may be simply because of the general 

 adaptability of this widely distributed species, but at any rate, 

 it would suggest the wisdom of trying others of our native 

 vines and shrubs. It may be used practically any place where 

 a vine will grow and it is especially rapid and vigorous. The 

 more water it receives the more rapidly it grows, but absolute 

 lack of water in the middle of the summer does not kill it; 

 it merely stops growing vigorously and seems to wait for the 

 water. 



VITACEAE. Grape Family 

 Woody vines, trailing or climbing by means of tendrils; leaves 

 large, simpje or compound, petiolate, the blade flat arid mostly thin; 

 inflorescence axillary, cymose or paniculate; flowers small and in- 

 conspicuous, greenish or yellowish, sometimes delicately perfumed, 

 perfect, polygamous, or dioecious, regular; calyx and corolla 4 or 5- 

 merous, a disk present or wanting; stamens of the same number as 

 the petals and opposite them; pistil compound; fruit a berry. 

 Leaves simple. 1 . Vttis. 



Leaves compound; 5-foIiolate, thin. 2. Pseora. 



I.— VITISL. Grape 



Trailing or climbing vines with shreddy bark and forking 

 tendrils; leaves simple, more or less palmately lobed or angled, with 

 small caducous stipules; flowers in axillary panicles, dioecious, 

 polygamo-dioecious, or rarely perfect; calyx minute; corolla caduc- 

 ous, the petals coherent; stamens exserted, alternate with the lobes 

 of the disk; fruit a few-seeded globose berry, edible; seeds hard and 

 bony, pear-shaped, relatively large. 

 A single species common in the mountains at 



levels of from 5000 to 7500 feet. 1. V. arizonica. 



2. PSEDERA Necker; Virginia Creeper 



Trailing or climbing woody vines with forking tendrils and 

 alternate palmately 5-foliolate leaves; leaflets 2 to -1 inches long, 

 coarsely toothed; flowers small, greenish, in axillary cymes; calyx 

 and corolla 5-merous, disk wanting; stamens 5; fruit a depressed 

 globose berry, blackish, not edible. 



1. P. vitacea. 



