"Cinchona pubescens Vahl". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2017. Retrieved 11 July 2020.
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(Acosta-Solis 1945; Missouri Botanical Garden specimen database 2002) Its distribution is at well documented by the Missouri Botanic Garden's Nomenclatural Data Base w3TROPICOSArchived 2009-06-01 at the Wayback Machine
(Acosta-Solis 1945; Missouri Botanical Garden specimen database 2002) Its distribution is at well documented by the Missouri Botanic Garden's Nomenclatural Data Base w3TROPICOSArchived 2009-06-01 at the Wayback Machine