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On February a we studied the limestone hills between the 
towns of Cabo Rojo and San German, which were found to be 
craggy, with a anal area of forest of common trees, but among 
them, on the jagged rocks, is the greatest growth of the giant 
Philodendron (Aroid Family) which we had ever seen, its great 
elephant-ear leaves over five feet long, the plants forming masses 
difficult to penetrate, a wonderful sight. February 18 was given 
to a further study of Guanajibo, proceeding south along the 
Milkwort Family (Polygalaceae), very different from our 
northern herbaceous. Polygalas, and restricted, so far as is 
known, to the West Indies; one species inhabits Jamaica, there 
are five or si a, one in the Bahamas, two in Hispaniola 
tl here recorded in Porto Rico; a close study of it: 
flowers will indicate to which of the other species it is most nearly 
related. successful eae) was here for a species of 
Psychotria, a shru e Madder Family, found by a German 
botanist in the “ity many years ago, otherwise recorded 
ly from Hispaniola. 
on Four more a were then given to exploration in the western 
Gr about 1,300 feet altitude, and the forests in this 
vicinity were studied up to altitudes of about 2,400 feet mon: 
one has white flowers, one violet and one blue, and all grow 
