BOTANICAL MUSEUM LEAFLETS 
HARVARD UNIVERSITY 
Campripcre, Massacuusetts, November 29, 1963 Vor. 20, No. 7 
A NEW GOSSYPIUM 
FROM THE CAPE VERDE ISLANDS 
BY 
Duncan CLEMENT! AND LYLE L. Paruuirs? 
Durinc the course of our investigations on the evolution 
and distribution of diploid and tetraploid cotton,’ we 
have gradually assembled living collections of the wild 
and cultivated species of the genus Gossypium. 'Through 
the efforts of Dr. Thomas Kerr, Cotton Branch, Agri- 
cultural Research Service, United States Department 
of Agriculture and of Director Professor A. Quintanilha 
and Ing. L. A. Grandvaux Barbosa of Centro de Inves- 
tigacao Cientifica Algodoeira, Mocambique, we received 
in 1961 a packet of seed collected by Mr. Barbosa on one 
of the Cape Verde Islands, where he had been asked to 
look for G. capitis-viridis Mauer, an endemic species 
known only from the type collection. From these, one 
plant was grown in a greenhouse at Raleigh, and it soon 
became evident that we had neither G. capitis-viridis nor 
any other known species of the genus. In recognition of 
Mr. Barbosa’s special effort to find this unusual Gos- 
sypium material, we name the species for him. 
' Harvard University, Cambridge, Massachusetts. 
? North Carolina State College, Raleigh, North Carolina. 
®'These investigations are partially supported by National Science 
Foundation grant no. G-14203 to North Carolina State College. 
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