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Issue: Vol. 668 No. 3: 16 Oct. 2024
Type: Article
Published: 2024-10-16
DOI: 10.11646/phytotaxa.668.3.8
Page range: 286-292
Abstract views: 104
PDF downloaded: 9

Lobelia capixaba, a new microendemic species of L. sect. Rhynchopetalum (Campanulaceae) from Espírito Santo, Brazil

Laboratório Integrado de Sistemática Vegetal, Departamento de Botânica, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Rio de Janeiro, RJ, Brazil, 21941-590. Programa de Pós-Graduação em Ciências Biológicas (Botânica), Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, Rio de Janeiro, RJ, Brazil, 20940-040.
Laboratório Integrado de Sistemática Vegetal, Departamento de Botânica, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Rio de Janeiro, RJ, Brazil, 21941-590.
Asterales Atlantic Forest Endemism Lobelioideae Taxonomy Eudicots

Abstract

We describe and illustrate Lobelia capixaba, a new species of L. sect. Rhynchopetalum. The species is endemic to the state of Espírito Santo, known only from a few locations in Forno Grande State Park and surrounding areas. The unilabiate corolla with all lobes free at the apex and convolute is crucial to recognize the taxon as a distinct entity. The flower color is also notable, which can be whole in a single color or composed of a gradient of tones ranging from whitish or greenish to pink shades along the inflorescence. The species is compared to L. organensis, L. exaltata and L. hassleri, the morphologically most similar species. It is also compared to L. fistulosa and L. thapsoidea, as these species have overlapping distributions. An identification key for the South American species of L. sect. Rhynchopetalum is provided, along with comments on the species’ occurrence area and morphological variation, a distribution map, photographs, and SEM images of the seeds.

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