LEAFLETS OF PHILIPPINE BOTANY 
EDITED BY A. D. E. ELMER, A. M. 
Vol. IL Manila, P. L, December 15, 1910. Art. 50°. 
URTICAGEAE FROM THE VICINITY OF MOUNT AFO 
BY 
A. D. E. Elmer 
—O0— 
The following Urticaceae were chiefly collected in two 
localities in the vieinity of mount Apo. First, the Baru- 
ring river gorge or canyon at about 3500 feet altitude. Along 
this river were collected the majority of rank succulent 
species which under favorable conditions formed dense masses 
in wet stony soil of narrow flats near the river. Pilea rob- 
insonii Elm., Elatostema whitfordii Merr., Elatostema baruringen- 
se Elm. and a species of Pellionia are striking local examples. 
The Sibulan river on the other hand flows nearly parallel 
at that altitude and is relatively poor in this kind of veg- 
etation, possibly due to the swifter flow and greater rise 
and fall of water during heavy rains. The second and 
most interesting locality is along the Cati creek from above 
its series of falls into the Sibulan river up to 7000 feet 
or higher on the northeast side of Apo, and which flows 
through the dense moss laden forests. Along this creek 
I spent three days of most profitable collecting. On the 
last day I managed to work up to 6500 feet where the 
bowlders were heavily strewn along the creek bed and 
the rocky cliffs were narrowly banking the stream. Here 
the herbaceous species were finer and more abundant in 
kind as well as in individuals than I had ever seen 
before. Everywhere they matted the rocks and carpet- 
