p, .^''°-. '?9- 'ree-trimk with epiphytes. Blunienau, Brazil. Beluw: Viiesea Above- 

 Khipsalis sp. To the right: cord-like ai;rial roots (absorbinsj roots) of Philodendron sp. 

 io the lelt : an obliquely asceinling liaiie-stem. From a photograph by H. Suhcnck. 



To face p. 3,8.] 



