A family of trees and lianas vegetatively characterized by opposite leaves and the presence of T-chaped “malphighiaceous” trichomes...  The family is divided about 50/50 between trees and liana.  A.H. Gentry, Woody Plants of NW South America, 574

Malphighiaceae

 

Banisteriopsis longgeolata

Stigmaphylon

 

Banisteriopsis caapi