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      Discovery and conservation of Monanthotaxis bali (Annonaceae) a new Critically Endangered (possibly extinct) montane forest treelet from Bali Ngemba, North West Region, Cameroon

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      Kew Bulletin
      Springer Science and Business Media LLC

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          Summary

          Monanth otaxis bali is the only known, solely montane (occurring solely above 2000 m alt.) species of the genus. It joins M. orophila (Rwanda) and M. discolor (Tanzania), two other species that can also occur above 2000 m alt. Monanthotaxis bali is an addition to the small number (28) of the tree species of the surviving montane forests of the Cameroon Highlands of which only eight other species are endemic. Due to its supra-axillary inflorescences, and petals arranged in one whorl but with the outer petals overlapping the inner petals distally, and rounded flower buds, the new species is placed in Monanthotaxis clade B of Hoekstra . The new species is unusual in having the largest outer petals in clade B, in being a treelet in a predominantly lianescent genus, and in lacking the glaucous underside of the leaf-blades that usually characterises the genus. Monanthotaxis bali takes the number of continental African species of the genus to 80, and makes Cameroon, with 30 species, the most species-diverse country for the genus. Monanthotaxis bali is known only from the Bali Ngemba Forest Reserve, a forest remnant under great pressure of degradation and clearance in the Bamenda Highlands of Cameroon. The case for protecting Bali Ngemba for its unique plant biodiversity is made. Monanthotaxis bali may already be extinct due to logging and agricultural activities. Here it is described, illustrated, mapped and assessed as Critically Endangered (Possibly Extinct) using the IUCN 2012 criteria.

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          International Code of Nomenclature for algae, fungi, and plants

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            Extinction risk and threats to plants and fungi

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              New scientific discoveries: Plants and fungi

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                Author and article information

                Contributors
                Journal
                Kew Bulletin
                Kew Bull
                Springer Science and Business Media LLC
                0075-5974
                1874-933X
                September 2023
                July 11 2023
                September 2023
                : 78
                : 3
                : 259-270
                Article
                10.1007/s12225-023-10117-9
                03bff989-3268-4c6a-8522-e082b7d1f7db
                © 2023

                https://creativecommons.org/licenses/by/4.0

                https://creativecommons.org/licenses/by/4.0

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