Endl.) was seen growing on the roots of Cassia emarginata L., 

 at an altitude of 2,100 feet. 



The first real canon we visited presented a profusion of epi- 

 phytic and tree ferns, orchids, and other moisture-loving plants ; 

 the change from the dry slopes being very sudden and very 

 pleasing. 



Unfortunately the countiy at this point became so rugged 

 that it was impossible with our outfit to continue the explora- 

 tion, at least Dr. Fernow did not feel justified in further attempt- 

 ing the ascent of the river; and I was thus forced to give up what 

 would doubtless have been an excellent collecting ground after 

 the higher altitudes were reached. 



Returning to the coast we went on to the Rio Grande, where 

 much the same conditions prevailed, the river being smaller and 

 even more impassable than the Guama. Most of the time here 

 was spent in collecting in a subxerophytic belt between the camp 

 and the ocean. A single day only was spent at the Rio Grande, 

 and then we started for the Ubero. On the way we crossed a 

 mineral spring with a copious flow of hot, and very salty, water. 

 Among the rocks of the sea beach, live specimens were secured 

 of a branching Cereus, but no flowers or fruit could be found. 



At the Ubero a somewhat longer stay was made and I had the 

 opportunity of visiting two more canons, but at this juncture an 

 almost daily shower interfered with the collection and prepara- 

 tion of specimens. Without a tent, and on an expedition where 

 only the merest handful of dryers could be transported, the work 

 of drying plants was by no means easy. 



On the return journey Dr. Fernow stopped to look over the 

 Bayamita River valley, while I went through to Chiriviquo, to 

 give the specimens some much-needed attention. Afterwards I 



interesting plants, among them Pinus occidentalis, which is com- 

 mon in a number of places on the leeward side of the Maestra, 

 usually below 2,300 and above 1,000 feet. 



On the morning of September 1 5, with the lightest possible 

 outfit, we started for the Sierra Maestra. Going up the Sevilla 

 as far as practicable, our guides branched off, and, travelling 



