109 
vigorous growth of Alternanthera portoricensis, a species of the 
_Amaranth Family, known only on Porto Rico and, as previously 
a. 
until the afternoon of March 8, collecting upon the coastal 
limestone hills, including a visit to Salinas de Guanica. Further 
studies were made of the cacti which grow here in such note- 
worthy abundance, and which we had PAC On nm a previous 
visit,* and many other plants of the arid situ were collected 
coast some 8 mies east of Ponce, was our next ath of examina- 
Rico mainlaid arid region, but many of these are wanting, and 
* Journ. N. Y. Bot. Gard. 14: I0 
