by P. van Royen
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The alpine flora of New Guinea
Eriandra, a new genus of Polygalaceae fr...
Florae Malesianae Precursores
The podostemaceae of the New World
De botanische expeditie 1954-1955 in Nie...
Provisional list of families and genera ...
Ontogenese des Renonculacées
Sero-diagnostische Untersuchungen über d...
Zábranní ćinitelia pri reprodukcii lalio...
Anatomie des Holzes der Laurineen
Magnolia 'Ann', 'Betty', 'Jane', 'Judy',...
Big Survivors With Small Flowers