Cladoceras rovumense sp. nov. (Gentianales-Rubiaceae), a new species from southeast Tanzania and northeast Mozambique

  • Iain Darbyshire Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
  • John E. Burrows Buffelskloof Herbarium, Buffelskloof Nature Reserve, P.O. Box 710, Lydenburg, Mpumalanga Province 1120, South Africa
  • Quentin Luke East African Herbarium, National Museums of Kenya, P.O. Box 45166, Nairobi, 00100, Kenya
  • Clayton Langa Instituto de Investigação Agrária de Moçambique (IIAM), P.O. Box 3658, Mavalane, Maputo, Mozambique
Keywords: new record, new species, Rovuma, taxonomy, threatened


Following a review of the circumscription of the genus Cladoceras Bremek. (Rubiaceae) in relation to Tarenna Gaertn., the new species Cladoceras rovumense I.Darbysh., J.E.Burrows & Q.Luke sp. nov. is described from the dry forests of the Rovuma Centre of Plant Endemism (CoE) in southeast Tanzania and northeast Mozambique. This species has previously been known as Tarenna sp. 53, following the revision of African Tarenna by Jérôme Degreef. A comparison to Cladoceras subcapitatum (K.Schum. & K.Krause) Bremek., the only other member of this genus as currently circumscribed, is provided. The new species is assessed as Endangered under the criteria of the IUCN Red List. New records for Mozambique of two further Rovuma CoE endemics are recorded: Celosia patentiloba C.C.Towns. (Amaranthaceae) and Cordia fissistyla Vollesen (Boraginaceae), both of which are globally threatened.


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How to Cite
Darbyshire, I., Burrows, J. E., Luke, Q., & Langa, C. (2022). Cladoceras rovumense sp. nov. (Gentianales-Rubiaceae), a new species from southeast Tanzania and northeast Mozambique. European Journal of Taxonomy, 833(1), 46-59.
Research article