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29 March 2018 Revision of the Didymopanax Group of Neotropical Schefflera (Araliaceae)
Pedro Fiaschi, Gregory M. Plunkett
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A taxonomic revision of the species belonging to the Didymopanax group of Neotropical Schefflera J. R. Forst. & G. Forst. (Araliaceae) is here presented. This monophyletic group is currently recognized only informally, and comprises 37 species mostly restricted to small areas of lowland to mid-elevation tropical regions across Brazil and adjacent southern Venezuela. Five names are newly placed in synonymy: Didymopanax gardneri Seem. var. ellipticus Marchal [= Schefflera glaziovii (Taub.) Frodin & Fiaschi], D. morototoni var. sessiliflorus Marchal [= Schefflera morototoni (Aubl.) Maguire, Steyerm. & Frodin], Schefflera megacarpa A. H. Gentry [= Schefflera confusa (Marchal) Harms], Schefflera morototoni var. angustipetala (Marchal) Frodin [= Schefflera tamatamaensis Maguire, Steyerm. & Frodin], and Schefflera yutajensis Steyerm. & B. Holst [= Schefflera quinquecarinata Steyerm.]. Thirty-two names are lectotypified: D. angustissimus var. conspicuus Marchal [= Schefflera angustissima (Marchal) Frodin], D. anomalus Taub. [= Schefflera angustissima], D. claussenianus Decne. & Planch. ex Marchal [= Schefflera calva (Cham.) Frodin & Fiaschi], D. falcatus Marchal [= Schefflera angustissima], D. gardneri var. ellipticus Marchal, D. morototoni var. poeppigii (Decne. & Planch.) Marchal [= Schefflera morototoni], D. morototoni var. sessiliflorus Marchal, D. venulosus Taub. [= Schefflera vinosa (Cham. & Schltdl.) Frodin & Fiaschi], Panax sericeus Pohl ex DC. [= Schefflera vinosa], P. speciosus Willd. [= Schefflera morototoni], P. splendens Kunth [= Schefflera morototoni], Schefflera angustissima, Schefflera burchellii (Seem.) Frodin & Fiaschi, Schefflera calva, Schefflera cephalantha (Harms) Frodin, Schefflera confusa, Schefflera cordata (Taub.) Frodin & Fiaschi, Schefflera decaphylla (Seem.) Harms, Schefflera distractiflora (Harms) Frodin, Schefflera gardneri (Seem.) Frodin & Fiaschi, Schefflera glaziovii, Schefflera longipetiolata (Pohl ex DC.) Frodin & Fiaschi, S. lucumoides (Decne. & Planch. ex Marchal) Frodin & Fiaschi, Schefflera macrocarpa (Cham. & Schltdl.) Frodin, Schefflera malmei (Harms) Frodin, Schefflera morototoni, Schefflera morototoni var. angustipetala, Schefflera paraensis Huber ex Ducke [= Schefflera decaphylla], Schefflera selloi (Marchal) Frodin & Fiaschi, Schefflera succinea Frodin & Fiaschi, Schefflera vinosa, and Sciodaphyllum paniculatum Britton [= Schefflera morototoni]. Additionally, D. pachycarpus Marchal [= Schefflera calva] is neotypified. We also provide information on the taxonomic history of Didymopanax Decne. & Planch., general morphological comments on the Didymopanax group, an identification key to species, and for each of the accepted species, the geographic distribution, preferred habitats, diagnostic features, illustrations, maps, a list of examined material, and nomenclatural comments. A list of exsiccatae with all examined specimens is also provided.

Pedro Fiaschi and Gregory M. Plunkett "Revision of the Didymopanax Group of Neotropical Schefflera (Araliaceae) ," Annals of the Missouri Botanical Garden 103(1), 24-105, (29 March 2018).
Published: 29 March 2018

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