Botanica Pacifica

Research paper

Botanica Pacifica. A journal of plant science and conservation 2014. 3(2): 3-18.
Article first published online: 15 OCT 2014 | DOI: 10.17581/bp.2014.03201

Taxonomic Novelties in Solenostoma - Plectocolea Complex (Solenostomataceae, Hepaticae) in East Asia

Vadim A. Bakalin 1, 2 *, Anna A. Vilnet 3, Tatsuwo Furuki 4 & Tomoyuki Katagiri 5
1 Botanical Garden-Institute FEB RAS, Vladivostok, Russia
2 Institute of Biology & Soil Science FEB RAS, Vladivostok, Russia
3 Avrorin’s Polar-Alpine Botanical Garden and Institute, Kola Science Centre RAS, Kirovsk, Russia
4 Natural History Museum and Institute, Chiba, Japan
5 Department of Biological Science, Hiroshima University, Hiroshima, Japan

The involving of poorly known taxa from East Asia into integrative analysis allows clarifying the taxonomic structure of Plectocolea - Solenostoma complex. Due to data in hand this complex includes four distinct genera. The genus Metasolenostoma Bakalin et Vilnet is described. Jungermannia sect. Protosolenostoma is elevated to generic rank – Protosolenostoma (Amak.) Bakalin et Vilnet. The species rank for Plectocolea shinii, Solenostoma minutissimum and S. rishiriense is confirmed. Plectocolea ariadne fits well in Plectocolea, but not in Solenostoma. The name Solenostoma major is showed to be incorrectly used before and the new name S. sunii Bakalin et Vilnet is proposed for the taxon. The new species Metasolenostoma orientale Bakalin et Vilnet and Plectocolea higuchii Bakalin et Vilnet are described. The paper provides morphological descriptions as well as figures based on studied material for newly described or re-evaluated taxa. Some evolutionary pathways within Plectocolea - Solenostoma complex are discussed: 1) perigynium reduction and specification of perianth, 2) further development of perigynium conjugate with perianth reduction, 3) specialization of ‘oil cells’ in the leaf lamina and 4) the growth form evolution.

Бакалин В.А., Вильнет А.А., Фуруки Т., Катагири Т. Таксономические изменения в комплексе Plectocolea - Solenostoma (Solenostomataceae, Hepaticae) в Восточной Азии. Вовлечение малоизученных восточноазиатских представителей в интегративное исследование прояснило структуру комплекса Plectocolea - Solenostoma. Установлено, что этот комплекс включает 4 рода, один из которых ( Metasolenostoma Bakalin et Vilnet) описан впервые, а другой впервые рассматривается как самостоятельный род - Protosolenostoma (Amak.) Bakalin et Vilnet (= Jungermannia sect. Protosolenostoma). Подтвержден видовой статус Plectocolea shinii, Solenostoma minutissimum и S. rishiriense. Plectocolea ariadne должна рассматриваться как представитель рода Plectocolea, а не Solenostoma. Показано некорректное использование названия Solenostoma major, которое заменено на S. sunii Bakalin et Vilnet. Описаны новые виды: Metasolenostoma orientale Bakalin et Vilnet и Plectocolea higuchii Bakalin et Vilnet. Приводятся морфологические описания и иллюстрации впервые описанных видов и таксонов, статус которых пересмотрен. На основе интегративного анализа сделаны наблюдения о следующих путях эволюции в комплексе Plectocolea - Solenostoma: 1) редукция перегиния и увеличение периантия, 2) увеличение перегиния и уменьшение периантия, 3) специализация ‘масляных клеток’ в листе, 4) развитие форм роста.

Keywords: Solenostomataceae, Plectocolea, Solenostoma, Metasolenostoma, Protosolenostoma, интегративная таксономия, trnL-F, trnG-intron



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