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Lectotypification of Cycasdebaoensis (Cycadaceae)
1Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, College of Biology and the Environment, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, China Nanjing Forestry University Nanjing China.
Phytokeys
|February 10, 2023
Summary
This study clarifies the type specimen for Cycas debaoensis, designating a lectotype and identifying isolectotypes to ensure nomenclatural stability for this plant species.
Area of Science:
- Botany
- Plant Taxonomy
- Nomenclature
Background:
- The type collection of Cycas debaoensis Y.C.Zhong & C.J.Chen (Y.C.Zhong 8762) comprises multiple duplicates.
- Previous understanding of the type collection may not accurately reflect its composition.
Purpose of the Study:
- To investigate the composition of the type collection for Cycas debaoensis.
- To establish a stable and accurate nomenclatural type for Cycas debaoensis.
- To clarify the status of various specimens within the type collection.
Main Methods:
- Examination of herbarium specimens, specifically duplicates of Cycas debaoensis.
- Nomenclatural analysis of the type collection.
- Selection of a lectotype and identification of isolectotypes.
Main Results:
- The type collection of Cycas debaoensis includes at least two distinct gatherings.
- Herbarium sheet PE00047578 has been lectotypified as the name-bearing type for Cycas debaoensis.
- Other duplicates in PE and GXMI are designated as isolectotypes; seeds collected in Oct 1998 are considered a syntype.
Conclusions:
- The lectotypification of Cycas debaoensis provides nomenclatural clarity.
- Accurate identification of type specimens is crucial for plant taxonomy and biodiversity research.
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