34 FAMILIES OF FLOWERING PLANTS. 
pinnate leaves are arched in graceful curves, and they frequently at- 
tain lofty proportions. The royal palm, Oreodowa regia, is common in 
the West Indies; the fine photograph reproduced in Figure 31: was 
made in Porto Rico by Mr. G. N. Collins. The conspicuous swelling 
of the trunk affords an easy means of recognizing this tree. The 
cocoanut palm (Cocos nucifera) is familiar to most persons; it is quite 
common on the Florida Keys and is employed as a shade tree in Key 
West (See Fig. 32). Many other genera of pinnate-leaved palms be- 
longing to this family afford beautiful examples for cultivation, The 
Fig. 32.—Cocoanut palms around a dwelling in Key West. After a photograph by Mr. 
G. N, Collins. 
oil palm (Ales Guineensis) is a native of Western Africa, and is one 
of the chief sources of palm oil. This group also includes the coquita 
palm of Chili (Jubea spectabilis) and the piassata of Brazil (Aétalea 
Sunifera). 
5. Subfamily Phytelephantoideae. The principal genus of this 
group is the type, Phytelephas, native of tropical America, and put to 
numerous local uses by the natives. 
