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Genus Empogona ·... www.inaturalist.org

Empogona Hook.f. www.gbif.org

Empogona Hook.f. www.gbif.org

Genus Empogona ·... www.inaturalist.org

BOLD Systems: Taxonomy... v3.boldsystems.org

African Plants - A Photo... www.africanplants.senckenbe...

Tricalysia - Wikipedia en.wikipedia.org

Smart'Flore www.tela-botanica.org

Empogona Hook.f. www.gbif.org

Herbarium specimen –... www.secosud2project.com

Open Herbarium - Rubiaceae www.openherbarium.org

PDF) Phylogeny of... www.researchgate.net

Southern African Savannas... link.springer.com

Open Herbarium - Rubiaceae www.openherbarium.org

Tricalysia plantillustrations.org

Empogona Hook.f. www.gbif.org

PDF) Phylogeny of... www.researchgate.net

World Plants: Plant List www.worldplants.de

World Plants: Plant List www.worldplants.de