Seven new species of Rinorea (Violaceae) from the Neotropics

• Published in: PhytoKeys Vol. 242; no. 6; pp. 241 - 271
• Main Authors: Hoyos-Gómez, Saúl E, Callejas Posada, Ricardo, Wahlert, Gregory A
• Format: Journal Article
• Language: English
• Published: Bulgaria Pensoft Publishers 03.06.2024
• Subjects: Bar codes; Biodiversity; Biosphere; Botany; Central America and the Caribbean; Discovery and exploration; Endangered & extinct species; Geographical distribution; Identification and classification; Identification keys; Leaves; Morphology; National parks; New species; New taxa; Rainforests; South America; Species extinction; Taxonomy; Threatened species; Violaceae; Violets; South America; Venezuela; Colombia; new species; morphology; Conservation; Violaceae; taxonomy; Neotropics; Malpighiales
• ISSN: 1314-2011; 1314-2003
• DOI: 10.3897/phytokeys.242.110474

Over the course of revising the genus (Violaceae) from Colombia, field observations and herbarium studies revealed seven new species. Several of the new species described here belong to species complexes that required examination of herbarium material from across the Neotropics. Each of the new species described here have oppositely arranged leaves and belong to Rinoreasect.Pubiflorae, a section restricted to the Neotropics. Two new species are segregated from the species complex: from Chiribiquete National Park in the Colombian Amazon and from the Orinoco River near the border of Colombia and Venezuela. Two new species are segregated from the species complex: and , both from the eastern slopes of the Andean Central Cordillera along the mid-Magdalena River Valley in Colombia. From the widely distributed species complex, we segregated one new species, , from southeast Panama and the Chocó in Colombia. In addition to these five new taxa segregated from widely distributed species complexes, we discovered two previously unknown species with affinities to other Neotropical . is described from the Alto Orinoco-Casiquiare Biosphere Reserve in Venezuela and most closely resembles from Colombia. is segregated from and occurs in the Amazonian Regions of Colombia, Brazil, Peru and Venezuela. In this study, we provide descriptions, illustrations and distribution maps of the new species and make preliminary assessments of the risk of extinction using the IUCN Red List Categories and Criteria. We also furnish an identification key to the species of Rinoreasect.Pubiflorae in Colombia.