%0 Journal Article
%T Studia in Bignoniaceas, I.: Novedades en Amphilophium Kunth y Haplolophium Cham. de Venezuela Studia Bignoniacearum, Taxonomical novelties in Amphilophium Kunth and from Venezuela
%A Jos¨¦ Ram¨®n Grande Allende
%J Acta Bot¨¢nica Venezuelica
%D 2011
%I Fundaci¨®n Instituto Bot¨¢nico de Venezuela Dr. Tob¨ªas Lasser
%X Se describen e ilustran dos especies nuevas de la subtribu Pithecocteniinae (Bignoniaceae: Bignonieae): Amphilophium ayaricum y Haplolophium bauxiticola, exclusivas de Venezuela. Amphilophium ayaricum no posee pelos dendroides, sus corolas son glabrescentes y los l¨®bulos externos del c¨¢liz son triangulares y recurvados, con pubescencia rala concentrada hacia el ¨¢pice y los m¨¢rgenes. Haplolophium bauxiticola presenta, dentro del g¨¦nero, la combinaci¨®n ¨²nica de caracteres: pubescencia dendroide sobre tallos y env¨¦s de los fol¨ªolos, l¨¢minas foliares fuertemente discoloras y c¨¢liz con limbo ca. 0,9 cm de largo. Estas especies s¨®lo se conocen de ¨¢reas muy reducidas en cuyos alrededores se llevan a cabo actividades que comprometen o pueden llegar a comprometer su supervivencia. Se incluyen comentarios taxon¨®micos, ecol¨®gicos y fitogeogr¨¢ficos y se discute la delimitaci¨®n de Amphilophium y Haplolophium dentro de la subtribu Pithecocteniinae con base en caracteres morfol¨®gicos y evidencia filogen¨¦tica. 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.
%K Ayari
%K Bauxilum
%K Bol¨ªvar
%K especies amenazadas
%K Lista Roja
%K Pijiguaos
%K T¨¢chira
%K UICN
%K Ayari
%K Bauxilum
%K Bol¨ªvar
%K endangered species
%K IUCN
%K Pijiguaos
%K Red List
%K T¨¢chira
%U http://wwww.scielo.org.ve/scielo.php?script=sci_arttext&pid=S0084-59062011000100005