Phylogenetic relationships in genus Gloriosa L.

摘要

In an attempt to test the monophyly of the genus?Gloriosa?L., the chloroplast regiontrnL-trnF sequences were employed using?Baeometra uniflora,?Hexacyrtis dickiana,Neodregea glassii,?Onixotis punctata,?Onixotis stricta,?Ornithoglossum parviflorum,Ornithoglossum undulatum,?Ornithoglossum viride,?Ornithoglossum vulgare?andSandersonia aurantiaca?as an outgroup. Results of maximum parsimony analysis reveal that?Gloriosa?is a well supported clade with the inclusion of genus?Littonia?Hook. The phylogenetic analysis resolves?Littonia modesta?Hook. as sister to the main clade of?Littonia revoilii?Franch. nested within?Gloriosa?sensu stricto?species. Within the main clade,?L. revoilii?and?Gloriosa baudii?(Terracc.) Chiov. form a well supported clade. Both species are near-endemics, occurring in east Africa with?L. revoiliiextending into south Yemen. The third clade comprises species of the?Gloriosa superba?L. complex and?Gloriosa sessiliflora?Nordal & Bingham. These three lineages are also strongly supported by ecological, geographical and morphological characters.