A Taxonomic study of the Genus Campylotropis Bunge (Leguminosae-Papilionoideae) in Thailand

Abstract

A taxonomic study of the genus Campylotropis Bunge (Leguminosae-Papilionoideae) in Thailand based on morphological features of fresh specimens in all floristic regions in Thailand from November 2016 to January 2018 including herbarium specimens in Thailand and other countries is provided. Seven species and one subspecies are recognised for Thailand, namely C. bonii Schindl., C. capillipes (Franch.) Schindl. subsp. prainii (Collett & Hemsl.) Iokawa & H. Ohashi, C. decora (Kurz) Schindl., C. harmsii Schindl., C. parviflora (Kurz) Schindl., C. pinetorum (Kurz) Schindl. and C. sulcata Schindl. Taxonomic change for C. parviflora is reinstated from C. cytisoides f. parviflora in this study. A key to species, morphological descriptions, ecological data, distributions, illustrations and photographs are also presented. The studies on pollen morphology and phylogenetic relationship using trnL-trnF intergenic spacer and trnL intron are included with morphological characters to circumscribe the generic and species delimitations. The results reveal that the evidence of morphology is the most suitable evidence for species delimitation of Campylotropis in Thailand and evidences from palynology and phylogenetic relationship can be satisfactory applied to group some related Campylotropis species and related genera.