New or otherwise noteworthy Apocynaceae of tropical America
Subtitle: I-VII
Published: 1931
Language: eng
Notes: Ann.Mo.Bot.Gard.xviii:541-556. 1931;xix:45-76,375-387.1932;xxi:613-623.1934;xxiv:11-16.1937;xxvi:95-98,257-259.1939.