Nomenclatural novelties in Celtis (Cannabaceae) and a preliminary phylogeny of the genus with emphasis on the South Amer
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SYSTEMATICS, PHYLOGENY & FLORISTICS - ORIGINAL ARTICLE
Nomenclatural novelties in Celtis (Cannabaceae) and a preliminary phylogeny of the genus with emphasis on the South American species Henrique Borges Zamengo1 · André Luiz Gaglioti2,4 · Débora Chamorro5,6 · Virginia Mogni5 · Luis Oakley5,7 · Darién Prado5,6 · Roseli Buzanelli Torres3 · Leticia de Mattos1,4 · Paulo Roberto Da‑Silva4 · Sergio Romaniuc‑Neto2 Received: 30 April 2020 / Revised: 10 September 2020 / Accepted: 14 September 2020 / Published online: 29 September 2020 © Botanical Society of Sao Paulo 2020
Abstract This study provides a preliminary phylogeny of the Celtis species from the neotropical region with emphasis on the South American species. We analyzed 19 taxa using the plastid psbA-trnH and nuclear ITS 4-5, and FA16180b markers. The sequence data were analyzed using maximum parsimony, maximum likelihood, and Bayesian inference. The South American species were highly supported as monophyletic, while the North American species were recovered as paraphyletic. The endocarp morphology corroborated the lineages within the molecular phylogeny and helps to differentiate the species, to recognize a new species Celtis serratissima, and to reestablish two previously known species, Celtis clausseniana (Wedd.) Miq. and Celtis spinosissima (Wedd.) Miq. These three species emerged among one of the three lineages of the tropical South American species. Celtis serratissima is thus described, illustrated, and compared to its most closely related species. Keywords Endocarp · Mertensia · Neotropical region · South American flora · Taxonomy
1 Introduction The genus Celtis (Cannabaceae Martinov) is represented by 73 species with a large number of synonyms and is distributed in the tropics, extending to temperate regions (Berg and Dahlberg 2001; Yang et al. 2013). The species are distributed in Africa, Asia, and the Neotropical region from Texas (USA) to Argentina (Sattarian 2006). Members of the genus * Henrique Borges Zamengo [email protected] 1
Departamento de Biologia Animal e Vegetal (BAV), Herbário FUEL, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid ‑ PR 445 Km 380 Cx. Postal 10.011, Campus Universitário, Londrina, PR 86057‑970, Brazil
2
Instituto de Botânica, Herbarium SP, Avenida Miguel Stefano 3687, São Paulo, São Paulo 04301‑902, Brazil
3
Department of Botany, Instituto Agronômico de Campinas, Av. Dr. Theodureto de Almeida Camargo, 1500, Jardim Nossa Sra. Auxiliadora, Campinas, São Paulo 13075‑630, Brazil
4
Plant Genetics and Molecular Biology Lab., Universidade Estadual do Centro-Oeste, Rua Salvatore Renna, 1606‑1730, Santa Cruz, Guarapuava, Paraná 85015‑430, Brazil
can be recognized mostly by the following characteristics: trees to shrubs, monoecious, with or without spines; leaves alternate, trinervate, domatia present or not; inflorescences solitary or in pairs, bisexual or unisexual; sepals 5; stamens 5 and opposite to the sepals; ovary bicarpellate, uniovulate, stigma entire or bifurcate; and sm
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