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Issue: Vol. 435 No. 4: 12 March 2020
Type: Article
Published: 2020-03-12
DOI: 10.11646/phytotaxa.435.4.2
Page range: 280–292
Abstract views: 29
PDF downloaded: 2

Melampsora salicis-michelsonii sp. nov. on Salix michelsonii and Melampsora salicis-cavaleriei on Salix serrulatifolia from China

The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China The Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests, Xinjiang Agricultural University, Urumqi 830052, China
The Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests, Xinjiang Agricultural University, Urumqi 830052, China
The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
morphology phylogeny rust fungus Salix Fungi

Abstract

Based on morphological and phylogenetic analyses, two Melampsora species on willows collected in China were identified and described. One species, Melampsora salicis-michelsonii sp. nov. on Salix michelsonii, is characterized by uredinia amphigenous to mainly hypophyllous; urediniospores globoid to ellipsoid, echinulate; paraphyses capitate, clavate, intermixed, sometimes thickened at apex; telia amphigenous to mainly epiphyllous, and teliospores subepidermal with evenly thickened wall. Phylogenetically, the new species forms a new monophyletic clade with high support values 93/0.99 (ML/BI). Another species on Salix serrulatifolia is mainly characterized by epiphyllous uredinia and identified as Melampsora salicis-cavaleriei, of which phylogenetic analysis was performed and reported for the first time herein.