A new tiny-leaved species of Raveniopsis (Rutaceae) from the Pakaraima Mountains of Guyana

Collection: Pensoft Publishers

Keywords: Guiana Shield · Topics: Finance, Taxation, and Governance, Comparative International Legal Studies, Legal processes and jurisprudence

Raveniopsis microphyllus K.Wurdack, sp. nov., a new species known only from a single peak in the Pakaraima Mtns. of Guyana, is described and illustrated. This white-flowered shrub adds to the many narrow-endemic Guiana Shield species in the genus, and is unique in bearing small, trifoliate, sclerophyllous leaves. Leaf anatomy and surface micromorphology of the new species were examined to document its montane adaptations. The multiple trichome types of the leaves and flowers of new species were characterized, and the systematics value of the considerable foliar trichome variation in Raveniopsis is discussed.

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