Iris zhaoana, a new name for Iris potaninii var. ionantha (I. sect. Pseudoregelia ser. Tigridiae, Iridaceae) from China: evidence from morphological and plastid DNA data

MANUEL B. CRESPO; NINA B. ALEXEEVA; YUE E. XIAO

doi:10.11646/phytotaxa.470.4.2

Issue: Vol. 470 No. 4: 9 November 2020

Type: Article

Published: 2020-11-09

DOI: 10.11646/phytotaxa.470.4.2

Page range: 282–289

Abstract views: 42

PDF downloaded: 4

***Iris zhaoana, a new name for Iris potaninii* var. ionantha (I. sect. Pseudoregelia ser. Tigridiae, Iridaceae) from China: evidence from morphological and plastid DNA data**

MANUEL B. CRESPO⁺⁻
NINA B. ALEXEEVA⁺⁻
YUE E. XIAO⁺⁻

Departamento de Ciencias Ambientales y Recursos Naturales (dCARN), Universidad de Alicante, P.O. Box 99, ES-03080 Alicante, Spain

Komarov Botanical Institute, Russian Academy of Sciences, ul. 2 Prof. Popova, St. Petersburg, 197376, Russia

Shanghai Botanical Garden, Xuhui District, Shanghai 200231, China

Monocots Asian flora chloroplast DNA diagnostic key molecular phylogeny nomenclature taxonomy

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Abstract

The new name Iris zhaoana is proposed to replace I. potaninii var. ionantha, which is applied to a dwarf bearded iris described from western China, usually included in I. sect. Psammiris. It is a plant occurring at high elevation and showing roots thick and grey; leaves glaucous-green, blunt to subacute and shortly mucronate at apex; flower solitary, dichromic, bluish-violet, with standards and falls similar in shape and size; falls more richly blotched with deep-violet and with whitish areas; beard of white and blue-white hairs, tipped yellow; fruits globose-ovoid to ellipsoid, shortly acuminate at apex; and seed with a comparatively prominent, large, yellow aril. These features closely relate I. zhaoana to members of I. sect. Pseudoregelia, namely to I. tigridia, with which it has sometimes been confused. Morphological and molecular data are discussed here that support recognition of the Central Asian plant at species rank and its inclusion in I. sect. Pseudoregelia ser. Tigridiae.

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