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Issue: Vol. 754 No. 2: 5 May 2026
Type: Article
Published: 2026-05-05
DOI: 10.11646/phytotaxa.754.2.8
Page range: 227-236
Abstract views: 0
PDF downloaded: 0

Solanum longisepalum (Solanaceae): a new spiny species from the São Luís Island and a key to the clade Erythrotrichum from Maranhão state, Brazil

Programa de Pós-graduação em Ciências Biológicas – Botânica Tropical, Universidade Federal Rural da Amazônia/ Museu Paraense Emílio Goeldi, 66077-830, Belém, PA, Brazil
Laboratório de Fisiologia e Evolução de Plantas, Centro de Ciências Exatas e da Natureza, Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, 58051-900, João Pessoa, PB, Brazil
Coordenação do Curso de Ciências Biológicas – Bacharelado, Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
Programa de Pós-graduação em Ciências Biológicas – Botânica Tropical, Universidade Federal Rural da Amazônia/ Museu Paraense Emílio Goeldi, 66077-830, Belém, PA, Brazil; Coordenação do Curso de Ciências Biológicas – Licenciatura, Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
Eastern Amazon Leptostemonum Northeast Brazil Solanales Eudicots

Abstract

During the review of the spiny species of Solanum from Maranhão state, in the Brazilian Northeast region, a new species was discovered in an urbanized vegetation remnant within the Amazon Rainforest domain. Solanum longisepalum belongs to the minor clade Erythrotrichum and is morphologically characterized by its long and branched inflorescence, calyx lobes that are almost twice as long as in S. paludosum, white corolla and porrect-stellate trichomes with short midpoints distributed along the plant, excepted for the calyx and corolla. We present a taxonomic treatment with illustrations, geographic distribution, taxonomic comments, preliminary conservation status, and a taxonomic identification key for the species of clade Erythrotrichum in Maranhão state.

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How to Cite

Castro, E.T.S., Giacomin, L.L., Ferreira, A.W. & Marinho, L.C. (2026) Solanum longisepalum (Solanaceae): a new spiny species from the São Luís Island and a key to the clade Erythrotrichum from Maranhão state, Brazil. Phytotaxa 754 (2): 227–236. https://doi.org/10.11646/phytotaxa.754.2.8