The genusAscidiotaC.Massal. (Porellaceae, Marchantiophyta) in North Asia

Abstract

In 2013 the monotypic genus Ascidiota C.Massal. was found in the Republic of Buryatia and the Taymyr District of Krasnoyarsk Territory, Russia. These are the most northerly known localities for Ascidiota. An illustration, distribution map and complete description of A. blepharophylla C.Massal. are provided. Variation, differentiation, and distribution of A. blepharophylla are discussed. A key to distinguish Ascidiota from morphologically similar species of the genera Porella L. and Frullania Raddi is presented. Sequences of nrITS1-5.8S-ITS2 were identical in plants from Buryatia and Alaska. This supports the hypothesis of the integrity of this monotypic genus. Inadequate bryological exploration of many northern territories suggests that the list of Ascidiota records, especially in north Asia, will be extended in the future.

Porellaceae (Hepaticae) in the Russian Far East

“…With the same proviso we fol low here to treatment of infraspecific structure of the spe cies as suggested by Steere & Inoue (1978). Since an ex haus tive description and discussion of the taxon were published recently by Potemkin et al (2015) it seems un ne ce ssary to repeat them here. However, we provide a fi gure ( Fig.…”

“…2. Leaf dorsal lobe margin entire to dentate, rarely ciliate, spe cialized wa ter sacs absent in leaf lobes and underleaves, dor sal sur face of the dorsal lobe smooth to weakly pa pil lose, never with domelike verrucae above each leaf cell ....... (Potemkin et al 2015), the species was re gar ded as SinoHymalayan -Alaskan disjunct, although it was ex pec ted in northern Asia by Schljakov (1982). Po tem kin et al (2015) described two additional localities of Ascidiota in Siberia (YuzhnoMuisky Range in South Si be ria and the upper course of the Ereechka River in the nor thern periphery of the Central Siberian Plateau).…”