Vernonia calvoana — The... www.theseedybusiness.com

Flora of Mozambique:... www.mozambiqueflora.com

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File:Vernonia calvoana... commons.wikimedia.org

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Flora of Mozambique:... www.mozambiqueflora.com

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Flora of Zimbabwe: Species... www.zimbabweflora.co.zw

Flora of Mozambique:... www.mozambiqueflora.com

Flora of Mozambique:... www.mozambiqueflora.com

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Vernonia - Wikipedia en.wikipedia.org