Floral anatomy of the Lecointea clade (Leguminosae, Papilionoideae, Swartzieae sensu lato) |
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Authors: | Vidal de Freitas Mansano Simone de Pádua Teixeira |
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Institution: | 1. Instituto de Pesquisas Jardim Botanico do Rio de Janeiro, Rio de Janeiro, RJ, 22460-030, Brazil 2. Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas de Ribeir?o Preto, Universidade de S?o Paulo (USP), Ribeir?o Preto, SP, 14040-903, Brazil
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Abstract: | Flower and inflorescence anatomy and morphology of Exostyles, Harleyodendron, Holocalyx, Lecointea, and Zollernia (Leguminosae, Lecointea clade) were studied. Features common to all genera but otherwise rare within the Leguminosae include: (1) the presence of phenolic compounds in the epidermal cells of the anthers and subepidermal cells of the bracteoles, sepals, petals, and ovaries (absent in Holocalyx balansae); (2) simple trichomes on the adaxial base of the bracteoles and on the surface of the calyx and ovaries; and (3) tapetum persisting until the androspores are formed. Other notable anatomical features are: (1) colleters on the adaxial bases of the bracts and bracteoles of Holocalyx balansae and Zollernia ilicifolia; (2) trichomes on the anthers of Harleyodendron unifoliolatum, Holocalyx balansae, Lecointea hatschbachii, Zollernia ilicifolia and Z. magnifica; (3) osmophores on the petals of Exostyles godoyensis; (4) asynchronous pollen development in the anthers of Holocalyx balansae and Zollernia magnifica; and (5) vascular bundles surrounded by lignified fibers in Harleyodendron unifoliolatum. These anatomical characters are discussed according to their possible phylogenetic implications. |
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