A new Angolan species from the Triaspis hypericoides complex (Malpighiaceae) based on macromorphology and palynology.

de Almeida, Rafael Felipe; Antonio‐Domingues, Higor; Maiato P. Gonçalves, Francisco; Goyder, David J.

A new Angolan species from the Triaspis hypericoides complex (Malpighiaceae) based on macromorphology and palynology.

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Nordic_Journal_of_Botany_-_2024_-_de_Almeida_-_A_new_Angolan_species_from_the_Triaspis_hypericoides_complex__Malpighiaceae_.pdf

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Journal article

Creator (person)

de Almeida, Rafael Felipe

ORCID

Antonio‐Domingues, Higor

ORCID

Maiato P. Gonçalves, Francisco

ORCID

Goyder, David J.

ORCID

Date published

March 28, 2024

Abstract

currently comprises three accepted subspecies endemic to woodland savannas of southern continental Africa. After an unusual population belonging to this complex was collected in southwestern Angola, we re‐evaluated the classification of this group. This study was based on the analysis of type specimens, protologues, field photographs and herbarium sheets of all subspecies within . We reinstate , and based on differences in leaf, flower and fruit traits. Additionally, the Angolan population is proposed here as a new species of endemic to the dry miombo woodlands of Bicuar National Park, Huíla Province, southwestern Angola. sp. nov. is easily distinguished from by its alternate (versus opposite) leaves, ovate to widely ovate (versus widely ovate to very widely ovate) leaf laminas, rounded (versus sagittate) leaf base, flat (versus undulate) margins, sparsely white‐tomentose (versus glabrous to glabrescent) abaxial leaf surface, petiole 4–8 mm long (versus 2–3 mm long), compound inflorescences in thyrses (versus corymbs) and bracteoles inserted below apex of peduncles (versus in the middle of peduncles). An identification key to all species belonging to this species complex is presented alongside a complete morphological description for the new species, photographic plates and comments on the distribution, ecology, palynology and taxonomy. These results underline the need for continued revisions of the taxonomy of the neglected African genera of Malpighiaceae.