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Issue: Vol. 758 No. 2: 22 May 2026
Type: Article
Published: 2026-05-22
DOI: 10.11646/phytotaxa.758.2.2
Page range: 129-145
Abstract views: 0
PDF downloaded: 0

Reaffirming the taxonomic identity of Vernonia calderonii (Vernonieae: Asteraceae)

Instituto de Ecología A.C.; Programa de Maestría en Ciencias Biológicas. Centro Regional del Bajío; Av. Lázaro Cárdenas 253; Centro; Pátzcuaro; Michoacán; México; 61600; Current affiliation: Herbario MHES; Museo de Historia Natural de El Salvador. Ministerio de Cultura; final calle Los Viveros; San Salvador; El Salvador; 1101
Instituto de Ecología A.C.; Red de Diversidad Biológica del Occidente Mexicano; Centro Regional del Bajío; Av. Lázaro Cárdenas 253; Centro; Pátzcuaro; Michoacán; México; 61600
Compositae Critoniopsis El Salvador Eremosis nomenclature Piptocarphinae trichome diversity Eudicots

Abstract

Vernonia calderonii was described almost a century ago and classified in V. sect. Eremosis; it was known only from its type collection. However, its type specimens have been treated as a hybrid, or as a mixed collection, and currently, as a synonym. To clarify this situation, protologues, distribution areas and morphology of V. calderonii, Eremosis leiocarpa and E. standleyi were compared. The evidence obtained allowed us to determine that the type material of V. calderonii corresponds to a mixed collection of E. leiocarpa and E. standleyi, whereas its holotype belongs to the latter species. Microcharacters in combination with macrocharacters provide useful information for recognizing Eremosis taxa with similar morphology. Finally, taxonomic adjustments and an updated description of V. calderonii are provided.

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How to Cite

Blanco-Yanes, E.S. & Redonda-Martínez, R. (2026) Reaffirming the taxonomic identity of Vernonia calderonii (Vernonieae: Asteraceae). Phytotaxa 758 (2): 129–145. https://doi.org/10.11646/phytotaxa.758.2.2