@article {2564, title = {A new species of Ipomoea (Convolvulaceae) from Costa Rica and notes on the circumscription of section Calonyction (Choisy) Griseb.}, journal = {Harvard Papers in Botany}, volume = {4}, year = {1993}, note = {this is in Paper no. 4, and not volume 4, which came along in 1999!reprint in files}, pages = {53-56}, abstract = {Studies on New World Ipomoea have resulted in the following changes in Ipomoea section Calonyction: the recognition of I. skutchii sp. nov., the exclusion of two species previously included in the section, I. tastensis and I. violacea, and the reinstatement of I. santillanii. Considerations on character weighting are presented.}, keywords = {Costa Rica, GS, Ipomoea, Middle America, new species, nomenclature}, author = {McDonald, J. A.} }