Systematic revision of Orobanche pycnostachya and first record of O. filicicola (Orobanchaceae) in Russia

Stefan Rätzel, Holger Uhlich



Plants whose morphological characteristics correspond to those of Orobanche filicicola Nakai ex Hyun, Lim et Shin as described by Nakai (1952) and validated by Huyn et al. (2003), were in 2012 found for the first time in Russia (Far East, Primorye Territory) growing on the banks of the Ussuri River in the Chuguyevsky District and in a mixed population with O. amurensis (Beck) Kom. on the SE flank of the Sikhote-Alin Mountains (Lazovsky District). The status of the taxon has been revised. As a result, it is reclassified as a new variety of O. pycnostachya Hance, namely as O. pycnostachya var. filicicola (Nakai ex Hyun, Lim et Shin) Rätzel et Uhlich. In this context, O. pycnostachya and O. amurensis are discussed, including the relationship of O. amurensis with O. pycnostachya. In addition, O. coerulescens Stephan, O. coerulescens f. cristata Beck, O. coerulescens f. lehmannii Beck, O. coerulescens f. pekinensis Beck, O. coerulescens var. arenaria Serg., O. macrolepis Turcz., O. pycnostachya, O. pycnostachya f. amurensis Beck, O. pycnostachya f. albo-lutea Beck, O. quadrivalvis Regel and O. ussuriensis Novopokr. are lectotypified. Three necessary new combinations of infraspecific taxa from O. coerulescensO. coerulescens var. nipponica (Makino) Uhlich et Rätzel, O. coerulescens var. occidentalis f. multidentata (Beck) Uhlich et Rätzel and O. coerulescens f. arenaria (Serg.) Uhlich et Rätzel — are made. The name O. quadrivalvis is to be used as a synonym of O. kotschyi Reut.

Key words: Orobanchaceae, Orobanche, O. amurensis, O. coerulescens, O. filicicola, O. kotschyi, O. pycnostachya, Russia, Far East, Primorye Territory, new combinations, lectotypification, synonymization

How to cite

Stefan Rätzel, Holger Uhlich. 2022. Systematic revision of Orobanche pycnostachya and first record of O. filicicola (Orobanchaceae) in Russia // Novitates Syst. Pl. Vasc. Vol. 53. P. 89–101.

Submitted: 21.12.2021. Accepted: 20.12.2022.


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Supplementary materials

Appendix 1. Herbarium specimens of Orobanche coerulescens, O. pycnostachya var. filicicola and O. pycnostachya var. pycnostachya f. amurensis, collected by S. Rätzel in the Russian Far East


Appendix 2. Images of lectotypes of the names of some Orobanche taxa, designated in the article