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Type: Article
Published: 2020-02-10
Page range: 190–198
Abstract views: 21
PDF downloaded: 1

Lectotypification of the name Chenopodium hircinum, a wild relative of the pseudocereal crop species C. quinoa (Chenopodiaceae)

M.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine. 2 Tereshchenkivska Street, Kyiv (Kiev), 01601, Ukraine
V.L. Komarov Botanical Institute, Russian Academy of Sciences. 2 Professor Popov Street, St. Petersburg, 197376, Russia
Chenopodium crop relative lectotype nomenclature quinoa taxonomy Eudicots

Abstract

The name Chenopodium hircinum (Chenopodiaceae) applicable to a South American tetraploid species is lectotypified on a specimen deposited at LE (barcode LE00011694, right-hand specimen) that is associated with H.A. Schrader and his herbarium purchased for LE in 1841. A brief overview of relationships of the pseudocereal crop species C. quinoa with
C. hircinum (considered to be a wild crop relative and/or progenitor) is also provided. Since the lectotype of C. hircinum in LE lacks mature fruits/seeds, which are important for morphology-based diagnostics of taxa of Chenopodium (and also of infraspecific taxa described within C. hircinum), designation of an epitype with well-developed fruits/seeds is desirable according to Art. 9.9 of the ICN. However, we argue that an epitype should be proposed later, after achieving a better understanding of the variability of C. hircinum and proper typification of its infraspecific taxa, because hasty epitypifications could be nomenclaturally confusing and disrupting. In our opinion, an epitype specimen for that taxon name should represent a plant corresponding to the lectotype and well characterized molecularly, genetically and morphologically.