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Issue: Vol. 783 No. 2: 4 Nov. 2026
Type: Article
Published: 2026-11-04
DOI: 10.11646/phytotaxa.783.2.5
Page range: 161-172
Abstract views: 41
PDF downloaded: 3

Aristolochia minjiangyuanensis, a new species of subg. Siphisia (Aristolochiaceae) from Fujian, China

College of Forestry at Fujian Agriculture and Forestry University; Fuzhou; 350002; China
College of Forestry at Fujian Agriculture and Forestry University; Fuzhou; 350002; China
College of Forestry at Fujian Agriculture and Forestry University; Fuzhou; 350002; China
College of Forestry at Fujian Agriculture and Forestry University; Fuzhou; 350002; China
The Administration of Fujian Minjiangyuan National Nature Reserve; Fujian 365000; China
Fujian Health College; Fuzhou; Fujian 350101; China
College of Forestry at Fujian Agriculture and Forestry University; Fuzhou; 350002; China
Magnoliids morphology phylogeny plant taxonomy southeastern China

Abstract

Aristolochia minjiangyuanensis, a new species of Aristolochia subgen. Siphisia from Jianning County, Fujian Province, China, is described and illustrated. Morphologically, it differs in having usually narrower, narrowly ovate-cordate leaves with a long-acuminate or acute apex, a subobovate perianth limb with the lower lobe significantly longer than the upper two lobes and an unspotted inner surface, a smaller throat, and an indumentum predominantly composed of grayish-white velvety hairs. Phylogenetic analyses, based on the nuclear ribosomal ITS region (5.8S + ITS2) and the plastid trnK region, support the placement of A. minjiangyuanensis within the A. kaempferi group, while the trnK analysis further strongly supports a sister relationship between the new species and A. vestita. The new species can be distinguished from A. vestita by its subobovate perianth limb with a revolute apex and an inner surface without spots or stripes, subcircular throat, and predominantly grayish-white velvety indumentum. It differs from A. kaempferi mainly in the morphology and markings of the perianth limb and in having a cylindrical, velvety capsule.

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How to Cite

Gong, C.-Y., Fu, H.-H., Zhou, C.-Y., Chen, H.-H., Huang, X., Ma, L. & Chen, S.-P. (2026) Aristolochia minjiangyuanensis, a new species of subg. Siphisia (Aristolochiaceae) from Fujian, China. Phytotaxa 783 (2): 161–172. https://doi.org/10.11646/phytotaxa.783.2.5