Full article: The taxonomy of Hoya micrantha and Hoya revoluta

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Figure 7 from Contribution to a revision of Hoya (Apocynaceae

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PDF) The taxonomy of Hoya micrantha and Hoya revoluta (Apocynaceae

Figure 15 from Preliminary Checklist of Hoya (Asclepiadaceae) in

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Figure 3 from Hoya undulata (Apocynaceae, Asclepiadoideae), a new

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PDF) The taxonomy of Hoya micrantha and Hoya revoluta (Apocynaceae