Bakalin V.A.1, Vilnet A.A.2 2009. Two new species of Jungermanniaceae from Asiatic Russia // Arctoa. Vol. 18: 151–162 [in English].

1 Institute of Biology and Soil Science, Stoletiya Vladivostoka Avenue, 159, Vladivostok 690022 Russia; e-mail:

2 Polar-Alpine Botanical Garden, Kola Sci. Center of Russian Academy of Sciences, Kirovsk-6, Murmansk Province 184256 Russia; e-mail:

KEYWORDS: Jungermannia, Solenostoma, Hepaticae, taxonomy, trnL-F, Asia.

ABSTRACT. Two species of Jungermanniaceae are described as new to science. Solenostoma pseudopyriflorum Bakalin et Vilnet is characterized by paroicous inflorescence, rigid shoots, purple colouration of a stem and leaf bases, as well as rhizogenous basal portion of the perianth. The species is most closely related to S. pyriflorum, but the latter has dioicous inflorescense and not so deep purple colour of a stem and basal portion of leaves. Jungermannia  konstantinovae Bakalin et Vilnet is characterized by penta-plicate perianth, paroicous inflorescence, very oblique inserted leaves and prostrate growth form. The species is superficially most similar to J. atrovirens, but the latter species is dioicous and has a typical for Jungermannia fusiform perianth, that is gradually contracted to the mouth. Solenostoma pyriflorum is excluded from Russian flora, as all so-called collections belong to S. pseudopyriflorum. Also, S. rishiriense is excluded from the liverwort flora of Primorskij Territory and Sakhalin Island, as all collections from these regions were proved to be S. pseudopyriflorum as well. Solenostoma pocsii (Vá?a) Bakalin comb. nov. is proposed

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doi 10.15298/arctoa.18.08