Can flowers help to disentangle the Vriesea oligantha complex (Bromeliaceae: Tillandsioideae)? Taxonomic implications and contributions to the floral anatomy and biology of Stigmatodon - Silva, Kleber Resende; Oriani, Aline; Versieux, Leonardo M; Martinelli, Adriana Pinheiro (Botanical Journal of the Linnean Society, 2024)