Botanica Pacifica. A journal of plant science and conservation Preprint
Article first published online: 28 NOV 2017 | DOI: 10.17581/bp.2017.06208
A new large-celled species of Plagiochila (Plagiochilaceae, Hepaticae) from the southern flank of the Russian Far East
Vadim A. Bakalin1 & Anna A. Vilnet2
1 Botanical Garden-Institute FEB RAS, Vladivostok, Russia
1 Polar-Alpine Botanical Garden-Institute of the Kola Science Center of RAS, Kirovsk, Russia
A new species of Plagiochila is described from cool-temperate Ussuri taiga zone in the Russian Far East using integrative morphological and molecular-genetic approach. Plagiochila sichotensis Bakalin et Vilnet sp. nov. (sect. Plagiochila) is characterized by totally entire leaves, relatively small size and, particularly, very large midleaf cells reaching 40–60 μm wide in the leaf middle. The latter feature distinguishes the new species from all known taxa of the genus and, among regional taxa, somewhat similar to the not evolutionary related Mylia. This epixylous taxon seems to be confined in its distribution to the low to middle elevation of mountains in the southern Sikhote-Alin Mts. The description, illustrations and discussion on the new species are provided.
Бакалин В.А., Вильнет А.А. Новый крупноклеточный вид Plagiochila (Plagiochilaceae, Hepaticae) с южной окраины российского Дальнего Востока. Новый вид Plagiochila описан из Уссурийской тайги, располагающейся на юге российского Дальнего Востока. Plagiochila sichotensis Bakalin et Vilnet sp. nov. (sect. Plagiochila) характеризуется цельными листьями, относительно мелкими размерами и, в особенности, крупными клетками листьев, достигающими в середине листа 40–60 мкм ширины. Последний признак отличает новый вид от всех известных таксонов рода и близок к значениям, наблюдаемым в эволюционно неродственном роде Mylia. По-видимому, этот эпиксильный таксон ограничен в распространении нижним и средним высотными поясами гор Сихотэ-Алиня. Приводятся описание, иллюстрации и отличительные признаки нового вида.
Keywords: Plagiochila, Hepaticae, the Russian Far East, taxonomy, flora, печеночники, российский Дальний Восток, таксономия, флора
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