Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae).

ABSTRACT: Christiana mennegae is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate its phylogenetic placement in the Brownlowioideae, part of the rbcL gene of the plastid and the intergenic ITS2 region were sequenced. Macro- and micro-morphological investigation of features of C. mennegae using SEM of foliar, flower, fruit and seed structures are presented. A lectotype for the name is designated here. The morphology of trichomes revealed five types of trichomes ranging from glandular to branched and unbranched and we also report stomata on the seed surface for th

SUBMITTER: Barbosa-Silva RG 

PROVIDER: S-EPMC8601058 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature