by Jan Thomas Johansson
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Motleyia, a new genus of the Rubiaceae f...
Taxonomic and morphological studies in t...
Revision of the genus Prismatomeris Thw....
Pollen morphology in Psychotria (Rubiace...
Flora of Guatemala
Studies of American plants
Flora of Tropical East Africa - Rubiacea...
The genus Coprosma
Flora of Micronesia
Travels in Peru and India