Materials to the revision of the genus Astragalus section Paracystium (Fabaceae)

M. S. Knyazev, A. P. Laktionov

DOI: https://doi.org/10.31111/novitates/2024.55.06

Full article

Abstract

The neotypification of Astragalus pallasii Biehler (Podlech, 1998) by the image «Astragalus physodi affinis» (Pallas, 1802: tab. LIX) is rejected because of a sharp and obvious discrepancy between the original description and the image. The description by Biehler (1807: 32) runs: «Astragalus pallasii... leguminibus lanceolatis... [with lanceolate pods...]», whereas in the plant on the Plate LIX (Pallas, 1802) the pods are bladdery inflated, subglobose. The synonymization of A. sytinii Belous et Laktionov with A. biebersteinii Bunge (Podlech, Zarre, 2013: 2118) is proved to be untenable; we treat A. sytinii as a separate species closer related to A. sumneviczii Pavlov, though differing by a number of characters. The previously designated lectotype of A. inderiensis Claus (Podlech, Sytin, 1996; LE 00052466) is superseded as being with conflict with the protologue (Claus, 1851); a new lectotype (LE 01195967) is designated in agreement with the original description and the author’s comments. Consequently, we treat A. inderiensis as a synonym of A. lasiophyllus Ledeb. We acknowledge that the lectotype of A. biebersteinii: «Ex montibus Schirvanicis, circa Kurt-Bulak» (LE 01071931) was designated by Gontscharov and Borissova (1946: 564), and the lectotypification by Podlech (1998): «Caucasi orientalis supra Altyagatch (Seidlitz!)» (P00584493) should be considered both superfluous and inconsistent with the most important characters cited in the protologue. An original key for indetification of the members of the section Paracystium Gontsch., and a map of the distribution of the discussed species are compiled.

Key words: Astragalus, section Paracystium, typification, distribution, key for identification

How to cite

Knyazev M. S., Laktionov A. P. 2024. Materials to the revision of the genus Astragalus section Paracystium (Fabaceae) // Novitates Syst. Pl. Vasc. Vol. 55. P. 43–51. https://doi.org/10.31111/novitates/2024.55.06

Submitted: 17.10.2024. Accepted: 29.12.2024. Published online: 31.12.2024

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Supplementary materials

Appendix. Studied specimens of the genus Astragalus section Paracystium taxa (Fabaceae)

NSPV_55_06_Knyazev_Laktionov-Appendix.pdf