The presence of a definite caruncle on the seed of this 
concept renders its inclusion in Cunuwria untenable. 
VII 
The authors wish to express their appreciation to the 
following institutions for the loan of material and for 
other courtesies: Arnold Arboretum, and Gray Herbar- 
ium of Harvard University: Missouri Botanical Garden: 
Chicago Museum of Natural History; New York Bo- 
tanical Garden; Yale School of Forestry: U.S. National 
Herbarium and U.S. National Arboretum Herbarium. 
The authorities of the Jardin Botanico de Rio de Janeiro 
and the Herbario do Instituto Agronémico do Norte in 
Belem do Parad, both in Brazil; the British Museum 
(Natural History) and the Royal Botanic Gardens, Kew 
are thanked for their kindness in permitting the speci- 
mens in their care to be studied. 
[ 849 | 
