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Issue: Vol. 716 No. 2: 28 Aug. 2025
Type: Article
Published: 2025-08-28
DOI: 10.11646/phytotaxa.716.2.7
Page range: 145-153
Abstract views: 1279
PDF downloaded: 16

Aristolochia guillermoi (Aristolochiaceae), a new species from Peru and a key to identify the Aristolochia taxa with branched trichomes

Universidad Nacional de Colombia, Facultad de Ciencias, Instituto de Ciencias Naturales, Sede Bogotá, Colombia
Universidad Nacional Pedro Ruíz Gallo, Lambayeque, Peru
Andean Aristolochia species branched trichomes montane Aristolochia species neotropical Aristolochiaceae Peruvian endemism Magnoliids

Abstract

A new species, Aristolochia guillermoi is described from seasonal dry forests of northern Peru, in the Department of Piura, at elevations between 1000 and 1600 m. The new species is similar to A. andina from central and southern Bolivia. They differ in several characters of the leaves, the perianth, the capsule and the seeds. Aristolochia guillermoi is the fourth Aristolochia species known to have branched trichomes, a very unusual epidermal trait in the genus, which also occurs in A. andina, A. fosteri and A. killipiana. Notably, all these species are restricted to the Andes of Ecuador, Peru and Bolivia, at elevations between 1000 and 2580 m. A key and a map of distribution for these species are provided.

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How to Cite

González, F. & Esquerre-Ibañez, B. (2025) Aristolochia guillermoi (Aristolochiaceae), a new species from Peru and a key to identify the Aristolochia taxa with branched trichomes. Phytotaxa 716 (2): 145–153. https://doi.org/10.11646/phytotaxa.716.2.7