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Issue: Vol. 670 No. 2: 30 Oct. 2024
Type: Article
Published: 2024-10-30
DOI: 10.11646/phytotaxa.670.2.6
Page range: 133-147
Abstract views: 94
PDF downloaded: 5

Resolving the ongoing confusion between Erigeron multiradiatus and Tibetiodes himalaica (Asteraceae)

Botanical Survey of India, Central National Herbarium, Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah 711 103, West Bengal, India.
Botanical Survey of India, Central National Herbarium, Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah 711 103, West Bengal, India.
Botanical Survey of India, Central National Herbarium, Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah 711 103, West Bengal, India. 32/1 Tarka Sidhanta Lane, Bally, Howrah 711 201, West Bengal, India.
Botanical Survey of India, Central National Herbarium, Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah 711 103, West Bengal, India.
Botanical Survey of India, Sikkim Himalayan Regional Centre, Gangtok 737103, Sikkim, India.
Botanical Survey of India, Central National Herbarium, Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah 711 103, West Bengal, India.
Aster Compositae Himalaya lectotype molecular marker Eudicots

Abstract

Erigeron multiradiatus (Asteraceae: Astereae: Conyzinae) and Tibetiodes himalaica (Asteraceae: Astereae: Asterinae) are often misidentified due to their morphological similarity and variation in some morphological characters. The present communication aims to resolve the identity crisis of these two species based on detailed morphological studies of freshly collected as well as herbarium specimens (including types), SEM studies of cypselas and molecular study with one nuclear and one chloroplast marker (ITS and trnLF). The morphological analysis showed that the two species differ in involucres and flower colour, with very clear differences in macro- and micro-morphological features of the cypselas. The molecular study also showed clear distinction between these two taxa. Additionally, a lectotype is designated for Erigeron multiradiatus.

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