1953] 



REVISION OF BRACHYOTUM 



403 



tubercles on the older leaves of specimens of the Peruvian species tend to be- 

 come discrete, exposing the epidermis, but in B. seorsum. the older leaves are 

 still completely covered with tubercles. The secondary veins are never as obvi- 

 ously reticulate in B. rostratum as in the Ecuadorian species. 



The New York Botanical Garden 

 New York 



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