Published October 28, 2022 | Version v1
Taxonomic treatment Open

Dissothrix imbricata Robinson 1906

Description

3. Dissothrix imbricata (Gardner) Robinson (1906: 35).

Stevia imbricata Gardner (1846: 458). Dissothrix gardneri Gray (1851: 223), nom. illeg. superfl.

Lectotype (designated here):— BRAZIL. Província Piauí, May 1839, G. Gardner 2211 (K000054172 [digital image!]; isolectotype K000054173, specimen on the left [digital image!]).

Gardner (1846) described Stevia imbricata based on two syntypes from Gardner collections: 1744, collected in the “province of Ceará ”, and 2211, coming from the “province of Piauí ”. In the herbarium of the Royal Botanic Kew Gardens (K), three specimens belonging to these collections are deposited, which are mounted on only two sheets: one sheet associated with the number 2211 (K000054172) and another sheet containing two samples with the numbers 1744 and 2211 assigned to different specimens (K000054173 and K00054174, respectively). Afterwards, Gray (1851) described Dissothrix Gray (1851: 223) and a new species, Dissothrix gardneri, using the same materials cited by George Gardner to describe Stevia imbricata, citing the latter as a synonym of D. gardneri, being, therefore, a superfluous illegitimate name (according to Art. 52 of the ICN).

Later, Robinson (1906) proposed a new combination, Dissothrix imbricata (Gardner) B.L. Rob.; however, did not indicate any type specimen of the basionym. Therefore, among the collections analyzed, we designate G. Gardner 2211 (K000054172, Figure 3) as a lectotype, considering that this specimen is in good condition, with the original Gardner label, and on a sheet with a single specimen associated. The material K000054173 (left portion of the card) constitutes an isolectotype and K000054174 is a remaining syntype.

Notes

Published as part of Rebouças, Natanael Costa, Giacomin, Leandro Lacerda, Roque, Nádia & Bünger, Mariana De Oliveira, 2022, Typifications in Eupatorieae (Asteraceae), pp. 289-294 in Phytotaxa 570 (3) on page 290, DOI: 10.11646/phytotaxa.570.3.4, http://zenodo.org/record/7260374

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Linked records

Additional details

Biodiversity

Collection code
K
Family
Asteraceae
Genus
Dissothrix
Kingdom
Plantae
Material sample ID
K000054172
Order
Asterales
Phylum
Tracheophyta
Scientific name authorship
Robinson
Species
imbricata
Taxon rank
species
Type status
lectotype
Taxonomic concept label
Dissothrix imbricata Robinson, 1906 sec. Rebouças, Giacomin, Roque & Bünger, 2022

References

  • Robinson, B. L. (1906) Studies in the Eupatorieae. Proceedings of the American Academy of Arts and Sciences 42: 3 - 48. https: // doi. org / 10.2307 / 20022173
  • Gardner, A. (1846) Contributions towards a Flora of Brazil, being the characters of several New Species of Compositae, belonging to the tribe Eupatoriaceae (cont.). The London Journal of Botany 5: 455 - 491.
  • Gray, A. (1851) Characters of a New Genus of Compositae-Eupatorieae, with remarks on some Other Genera of the same tribe. Hooker's Journal of Botany and Kew Garden Miscellany 3: 223 - 225.