by Timothy Plowman
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Pre-Columbian plant migration
Five new species of Brunfelsia from Sout...
A revision of the South American species...
Ten new species of Erythroxylum (Erythro...
The identity of Amazonian and Trujillo c...
Brunfelsia in ethnomedicine
El ge nero Heliconia en Venezuela
Revision of Heliconia subgen. Stenochlam...
Revision of Heliconia subgen. Taeniostro...
The taxonomy of old world Heliconia (Hel...
The Heliconia taxa of Costa Rica
Heliconiae novae brasilienses III