First description by Lace (1914) as Cotylanthera caerulea. Since Exacum already comprises a species E. caeruleum Balf. f. (Klackenberg 1985), another epitethon was needed when transferring Cotylanthera to Exacum (Klackenberg 2006).
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First description by Lace (1914) as Cotylanthera caerulea. Since Exacum already comprises a species E. caeruleum Balf. f. (Klackenberg 1985), another epitethon was needed when transferring Cotylanthera to Exacum (Klackenberg 2006).
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