A’ 
Volume 3 No. 3 
MUHLENBERGIA 
A. A. HELLER, Editor LIBRARY 
——-—— NEW Yor 
BOTANICA 
Los GaTos, CALIFORNIA, MARCH 28, 1907 Gusher 
#2 SEIN, 
NEW SPECIES OF IPOMOEA FROM MEXICO 
AND CENTRAL AMERICA 
By Homer D. HousE 
Various periods of study upon the Convolvulaceae in the 
herbaria of the New York Botanical Garden and the U. S. Nat- 
ional Museum during the past four years has shown that the 
American tropics are rich in undescribed and local species. 
Especially is this true of Mexico, from which country many 
species were described by early writers, and which are awaiting 
rediscovery. Before any satisfactory revision of the genus /fo- 
moea can be made, the types of the species described by Choisy, 
Martin and Galleoti, and others, must be studied. The follow- 
ing species have been carefully compared with descriptions of 
species which await rediscovery, and only those are here pre- 
sented which do not conflict with existing descriptions, speci- 
mens of which have not been seen: 
IPOMOEA EMITICA Choisy, in DC. Prodr. 9: 376. 1845. 
I. sagittata Moc. & Sesse; Choisy, 1. c. as syn. 
I. caudata Fernald, Proc. Am. Acad. 36: 498. Igot. 
Choisy’s description is brief, but seems to be identical in all 
critical characters with /. caudata. 
(37) 
