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Taxonomy, biogeography and evolution of plants
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RESEARCH ARTICLE (Open Access)
Contents Vol 36(5)

Eucalyptus cryptica (Myrtaceae): a critically endangered new species

Trevor C. Wilson https://orcid.org/0000-0002-9026-0521 A B * , Susan Rutherford https://orcid.org/0000-0001-9723-0790 B C F , Jia-Yee S. Yap https://orcid.org/0000-0002-9141-6006 B , Steven M. Douglas D , Enhua Lee E and Maurizio Rossetto https://orcid.org/0000-0002-4878-9114 B
+ Author Affiliations
- Author Affiliations

A Plant Discovery and Evolution, Botanic Gardens of Sydney, Mount Annan, NSW 2567, Australia.

B Research Centre for Ecosystem Resilience, Botanic Gardens of Sydney, Sydney, NSW 2000, Australia.

C Institute of Environment and Ecology, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, PR China.

D Ecological Surveys & Planning, Bundanoon, NSW 2578, Australia.

E Biodiversity and Conservation Division, New South Wales Department of Planning and Environment, Sydney, NSW, Australia.

F Present address: Department of Environmental Science, College of Science Mathematics and Technology, Wenzhou-Kean University, Wenzhou, 325060, PR China.

* Correspondence to: trevor.c.wilson@botanicgardens.nsw.gov.au

Handling Editor: Michael Bayly

Australian Systematic Botany 36(5) 386-400 https://doi.org/10.1071/SB22031
Submitted: 5 December 2022  Accepted: 9 August 2023   Published: 5 September 2023

© 2023 The Author(s) (or their employer(s)). Published by CSIRO Publishing. This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)

Abstract

Recognition that the critically endangered mallee Eucalyptus sp. Cattai (Gregson s.n. 28 Aug 1954) is a distinct species has been complicated by close morphological similarity between it and other members of E. subgenus Symphyomyrtus section Latoangulatae series Annulares. Recent genomic evidence has demonstrated that it is distinct from other species. In this study, we provide E. sp. Cattai with the new species name, E. cryptica T.C.Wilson, S.Rutherf. & S.M.Douglas, and use genomic scans of adults and seedlings to assist in its description and support its conservation by identifying hybrids. Accompanying the description of E. cryptica are images, diagnostic illustrations and an updated part of the Eucalyptus key for the Flora of New South Wales.

Keywords: conservation, conservation genetics, Eucalyptus, genome‐wide sequencing, hybridisation, Latoangulatae, Symphyomyrtus, taxonomy.

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