Survey of the Russian Far East Marchantiales IV: A revision of Ricciaceae (Hepaticae)

Abstract

The Russian Far East Ricciaceae comprises two genera: monotypic Ricciocarpos Corda and Riccia L., counting 13 species. The paper provides identification keys, lists of specimens examined, as well as figures and morphological descriptions based on material from area treated. The distribution of the most of taxa within stu died area was strongly clarified. Two species are newly recorded for Russia (R. mi yakeana Schiffn. and R. nigrella DC.) and two more are new for the Russian Far East (R. beyrichiana Hampe ex Lehm., R. rhenana Lorb. ex Müll. Frib.). K e y w o r d s :Riccia, Ricciocarpos, Ricciaceae, Russia, taxonomy, phytogeography, Hepaticae Р Е З Ю М Е Боровичев Е.А., Бакалин В.А. Обзор порядка Marchantiales на рос сий с ком Дальнем Востоке IV: Семейство Ricciaceae (Hepaticae). На рос сийском Дальнем Востоке семейство Ricciaceae представлено двумя ро да ми -монотипным Ricciocarpos Corda и Riccia L. Род Riccia на изученной тер ри тории насчитывает 13 видов. Приводятся ключи для определения ви дов и родов семейства, списки изученных образцов, морфологические опи са ния и оригинальные рисунки. В ходе проведенного исследования зна чи тельное количество изученных образцов было переопределено и, та ким образом, распространение видов в пределах российского Дальнего Вос тока существенно уточнено. Два вида впервые выявлены во флоре пе че ноч ни ков России (R. miyakeana Schiffn., R. nigrella DC.), и еще два ранее не были из вест ны на российском Дальнем Востоке (R. beyrichiana Hampe ex Lehm., R. rhe nana Lorb. ex Müll.Frib.). К л ю ч е в ы е с л о в а : I n T R o d u C T I o nThis paper continues the series on taxonomy of March antiales in the Russian Far East (Borovichev & Bakalin 2013, 2014a and Russia (Borovichev et al. 2009, 2012 and deals with the largest group of Marchantiales in the Rus sian Far East. The Ricciaceae counts 14 species in the Russian Far East that are merely common in the southern flank of the area, although sporadically occurring northward to near the Polar Circle. There were no any complete treatments of this fa mily for the eastern part of Russia that makes the present account actual for the promotion of further researches of li ver worts in the Far East and adjacent areas.The representatives of Ricciaceae in the Russian Far East occupy fine soil in manmade (roadsides, vast areas) habitats or areas with naturally disturbed vegetation cover (watercourses banks, etc.) as well as temporarily (rarer constantly) wetted habitats near various pools, ponds and sluggishly flowing ri vu lets. Northward, however, the Ricciaceae prefers rather un usual habitats like banks of thermal pools in the areas of re cent volcanic activity or fine (mostly clayey) soil in solifluction spots in mountain or zonal tundras.This study is based on a critical revision of 287 speci mens that are kept in the Botanical GardenInstitute, Vladi vos tok (VBGI, with incorporated collection from VLA) and the herbaria of the PolarAlpine Botanical GardenInstitute (KPABG), Main Botanical Garden (MHA) and Komarov`s Bo ta nical Institut...

On the identity of Riccia vulcanicola Eb. Fisch. (Marchantiophyta: Ricciaceae)

“…The dist ribution known before (Borovichev & Ba ka lin 2015, 2016 inclined to expect East Pa leoTe thyan pattern. If to accept the result pro vi ded in the present paper, more broad circum PaleoTethyan distribution of R. nipponica may be estimated.…”

“…For a long time, R. nipponica was treated as a Japanese endemic and the taxon merely com mon there (Higuchi 2011, Katagiri & Furuki 2012. Recent ly, the species was found in China (Guizhou Province) and in the Russian Far East (Khabarovsk Territory) , 2016. The distinc tions of R. nipponica from closely related R. crystallina and R. ca ver no sa are provided by .…”

Contributions to the genus Riccia L. (Ricciaceae) in Turkey

“…The material collected in Turkey notably had numerous cilia. From a general point of view, cilia number is changeable in the genus Riccia (Jovet-Ast, 1986;Paton, 1999) Distribution: Riccia beyrichiana has a temperate subcircumpolar distribution and in Europe and Africa, occurring mostly in the countries around the western half of the Mediterranean Sea and North Europe (Borovichev and Bakalin, 2016). It is recorded from Afghanistan, Algeria, Azores, Baleares, Belarus, Belgium, Bulgaria, Corsica, Croatia, Czech Republic, Denmark, England, Estonia, Faroes, Finland, France, Germany, Greece, the Netherlands, Iceland, Ireland, Italy, Macedonia, Malta, Norway, Poland, Portugal, Russia, Sardinia, Spain, Sweden, Tunisia, and Turkey in the Mediterranean Region and Europe.…”

The Hepaticae and Anthocerotae of Kedrovaya Pad’ Nature Reserve – an intact enclave of East Manchurian flora in Russia

“…Together with Riccia beyrichiana. The species is recorded by Borovichev & Bakalin (2016a) from the same locality.…”

“…The latter includes 149 moss spe cies and 30 species of hepatics -the number estimated as ra ther far from the reality. Several taxa were added in the recent years by other authors: Asterella cruciata was added by Borovichev et al (2015), Bazzania denu data and B. parabidentula -by Ba ka lin (2016), Clevea nana -by Borovichev & Bakalin (2013), Conocepalum salebrosum -by Borovichev et al (2009), Cylindrocolea kiaerii -by Bakalin and Mamontov in Ellis et al (2016), Porella spinulosa -by Potemkin (2008) and Riccia bifurca and R. beyrichiana -by Borovichev & Bakalin (2016a).…”