Abstract

GRANDE ALLENDE, José Ramón. Studia Bignoniacearum, Taxonomical novelties in Amphilophium Kunth and from Venezuela. Acta Bot. Venez. [online]. 2011, vol.34, n.1, pp.113-126. ISSN 0084-5906.

Amphilophium ayaricum and Haplolophium bauxiticola, two new species of the subtribe Pithecocteniinae (Bignoniaceae: Bignonieae) both exclusive to Venezuela, are described and illustrated. Amphilophium ayaricum has no dendroid hairs, their petals are glabrescent, and external calyx lobes are triangular, recurved, and with sparse pubescence concentrated towards the apex and the margins. Haplolophium bauxiticola presents, in the genus, the unique combination of characters: dendroid pubescence on stems and undersides of leaflets, leaf blades strongly discolor and calyx limb ca. 0.9 cm long. These species are known only from very small areas around which activities are conducted that compromise or may compromise their survival. Taxonomic, ecologic and biogeographic commentaries are included, and the delimitation of Amphilophium and Haplolophium within the subtribe Pithecocteniinae is discussed based on morphological characters as well as phylogenetic evidence.

Keywords : Ayari; Bauxilum; Bolívar; endangered species; IUCN; Pijiguaos; Red List; Táchira.

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