Misha Ignatov

Russian Academy of Sciences | RAS · herbarium

This paper describes a range of Paleozoic and Mesozoic mosses and assesses how far they can be referred to extant taxa at the family, ordinal, or class levels. The present study provides new data on Paleozoic mosses of the order Protosphagnales, re-evaluating affinities of some groups previously thought to be unrelated. The leaf areolation pattern,...

DNA-barcoding revealed/confirmed the range extension of the following bryophytes: Bryoerythrophyllum rubrum (Krasnoyarsk Territory, Kara Sea Islands), Hedwigia kuzenevae (Bashkortostan, South Urals), and Chionoloma orthodontum (Ingush Republic, Caucasus).

The establishment of axenic cultures and the propagation of the rare moss Entosthodon pulchellus (H. Philip.) Brugués (Funariaceae), as well as the optimisation of its ex situ growth conditions and rapid biomass production were the goals of this study. The results obtained also provide insights into the developmental biology of this moss in in vitr...

Two leafy liverwort species from the late Eocene Rovno amber are described. They are placed in the extant genus Nipponolejeunea (Jubulaceae, Porellales, Marchantiophyta) that includes two extant East Asian species and one fossil species described from the Eocene Baltic amber. New fossil species N. rovnoi sp. nov. and N. solodovnikovii sp. nov. diff...

Pterobryopsis siheiana A.E.D. Daniels & S. Athira is described as a new species from the southern part of the Western Ghats. It differs from other congeners in a combination of a large group of quadrate to subquadrate supra-alar cells above the reddish-brown tinted alar cells in both stem and branch leaves, the variable costae between stem and bran...

A new fossil leafy liverwort species is described based on its inclusion in Eocene Rovno amber. This species has morphology that is characteristic of extant representatives of the families Frullaniaceae and Jubulaceae, i.e., conduplicate-trilobed leaves with a ventral lobule forming a saccate-clavate watersac with its mouth directed towards the bas...

A study of Rovno amber has revealed two fossil leafy liverwort species of the genus Radula (Radulaceae, Marchantiophyta) that are new to the late Eocene flora of Rovno amber. One of these species, R. oblongifolia, was described previously from Eocene Baltic and Bitterfeld amber, whereas the other species, R. tikhomirovae, is described here as new....

Hedwigia is a small genus that currently comprises only 12 accepted species. However, taxonomic issues within this genus remain not thoroughly resolved, and its species diversity in China is still debatable. In this study, we conducted an integrative taxonomic revision of Hedwigia in China based on both molecular and morphological evidence. We foun...

Теодор К .Г. Коул, Хартмут Г. Хильгер, Бернард Гоффине, Михаил С. Игнатов (2023) Постер: Филогения Мохообразных – Систематика и признаки бессосудистых наземных растений (антоцеротовые, печеночников, мхов) © COLE, HILGER, GOFFINET, IGNATOV 2023 (CC-BY), Russian version of: COLE TCH, HILGER HH, GOFFINET B (2023) BRYOPHYTE Phylogeny Poster (BPP) • гип...

A new moss species, Alleniella aegaea (Neckeraceae) is described and illustrated from the Greek islands of Crete, Samos and Evvia based on morphological and molecular evidence. According to phylogenetic analysis of nuclear ITS and plastid trnS-F sequences it is sister to A. com planata, which it also morphologically resembles, but it differs from t...

As a result of identification the moss collections from Shikotan, Kunashir, Iturup and Urup islands (Southern Kuril Islands, Russian Far East) collected by T.I. Koroteeva, V.E. Fedosov, A.V. Shkurko, N.S. Liksakova, and A.K. Ezhkin in 2015–2021, new species for the islands were revealed: 6 ones for Urup, 8 for Iturup, 10 for Kunashir, and 19 for Sh...

The biological features of the recently described peculiar and rare pottioid moss species Pterygoneurum sibiricum have been studied. A conservation physiology approach through in vitro axenic establishment and laboratory-controlled tests was applied to learn more about its development, physiology, and ecology. Additionally, ex situ collection for t...

New observations and an overview of the axillary hair structure in the groups of mosses sister to peristomate ones are provided. Three moss lineages, Takakiopsida, Sphagnopsida, and Andreaeobryopsida are characterized by mucilage release through the apical pore or otherwise apical structures. Axillary hairs of Andreaea however, differ from these li...

Moss flora of the South Kamchatka Nature Park is presented based on synthesis of the previously published data, revised collection of the Komarov Botanical Institute and rich recent collection by Bakalin and Klimova. The annotated list includes 222 species currently confirmed from the park, and it is supplemented by a list of erroneous and doubtful...

First records of Xanthophyceae for the Vologda and Sverdlovsk regions, and Moscow, Characeae for the Vologda, Orenburg, Tver regions, diatoms for the Orenburg Region, aphyllophoroid fungi for the Novgorod and Tyumen regions, agaricoid fungi for the Novosibirsk and Vologda regions, and for the Republic of Altai, lichens for the Arkhangelsk and Murma...

Introduction The diversity of the moss genus Glyphomitrium Brid. is concentrated in East Asia. Its range extends to the southern part of the Russian Far East, where its species are rather widespread in hemiboreal coniferous forests. However, the species to which Russian specimens should be assigned remains unclear. Methods A morphological survey w...

A new combination, Encalypta robbinsii (Sainsbury) Brinda, Ignatov & Fedosov, is established as the correct name for the taxon long known as Bryobartramia novae-valesiae (Broth. ex G. Roth) I. G. Stone & G. A. M. Scott.

Introduction. We report the results of an international bryological expedition to the Khamar- Daban mountain range in Russian southern Siberia. The novel approach of integrative floristics is introduced here as a method of surveying the flora of a region by using a combination of morphological and molecular evidence to identify and verify unexpecte...

Introduction Half a century since the creation of the International Association of Bryologists, we carried out a review to identify outstanding challenges and future perspectives in bryology. Specifically, we have identified 50 fundamental questions that are critical in advancing the discipline. Methods We have adapted a deep-rooted methodology of...

We present an integrative molecular and morphological study of subaquatic representatives of the genus Pseudohygrohypnum (Pylaisiaceae, Bryophyta), supplemented by distribution modelling of the revealed phylogenetic lineages. Phylogenetic analyses of nuclear and plastid datasets combined with the assemble species by automatic partitioning (ASAP) al...

Sporoderm development in Andreaeobryum is studied and confirned to be similar to that in Andreaea in having no lamellate structure in the exine. The formation of the outer layers of the spore wall, external to the intine, proceeds by the accumulation of sporopollenin granules originating within the special wall of the sporocyte. Despite the outermo...

The Skvortsov Herbarium of the Tsitsin Main Botanical Garden, Russian Academy of Sciences (MHA) in the 1945-1980s dealt with vascular plants and only scattered occasional collections of bryophytes and lichens were accumulated there without special arrangement. Since the late 1980s, the bryophyte studies in the MHA Herbarium became permanent and sev...

New findings of bryophytes are presented

Anacamptodon latidens is discovered in the Russian Caucasus as a species new to the territory of Europe as the latter is defined in recent Checklists. Previously these Caucasian specimens were reported as A. splachnoides, hence the latter species is excluded from moss flora of Russia, although it occurs in Georgia in the Caucasus close to the Russi...

Sofronova E.V., Afonina O.M., Belyakov E.A., Bezgodov A.G., Birykova O.V., Boychuk M.A., Czernyadjeva I.V., Doroshina G.Ya., Dulin M.V., Fedosov V.E., Freydin G.L., Guziev Kh.Yu., Ignatov M.S., Ishchenko Yu.S., Ivanova K.A., Kapitonova O.A., Kukurichkin G.M., Kuzmina E.Yu., Lavrentiev M.V., Maksimov A.I., Philippov D.A., Popova N.N., Shestakova A.A...

The moss fossil records from the Paleozoic age to the Eocene epoch are reviewed and their putative relationships to extant moss groups discussed. The incomplete preservation and lack of key characters that could define the position of an ancient moss in modern classification remain the problem. Carboniferous records are still impossible to refer to...

The Khasurty locality (Lower Cretaceous of Transbaikalia, Russia) is one of the largest fossil insect sites in the region. Over the entire period of study, more than 6000 insect imprints have been collected here, representing 16 orders and 130 families. Dipterans, aphids and hymenopterans are the most common forms here, the most diverse taxa are Di...

Tayloria rudolphiana is documented in Altai Mountains, Russia as the first occurrence in North Asia. Previously this species was known in a limited range in Central Europe in Austria, Germany and Switzerland, where it at present is critically endangered to vulnerable. There are two disjunctive localities in China, a recent one in Hubei and a hundre...

Molecular phylogenetic reconstructions of Rhabdoweisiaceae based on plastid (trnS-rps4 and trnL-F) and mitochondrial (nad5) DNA sequences and a comprehensive taxon sampling were performed, including 15 out of 16 genera currently attributed to the family, taxa recently found belonging to Rhabdoweisiaceae and expanded outgroups from related families...

Molecular phylogenetic reconstructions of Rhabdoweisiaceae based on plastid (trnS-rps4 and trnL-F) and mitochondrial (nad5) DNA sequences and a comprehensive taxon sampling were performed, including 15 out of 16 genera currently attributed to the family, taxa recently found belonging to Rhabdoweisiaceae and expanded outgroups from related families...

Previous morphological studies and molecular phylogenetic reconstructions resolved Discelium in the diplolepideous-opposite peristome group of mosses among the early-diverging mosses with arthrodontous peristomes. However, sporophyte development in Discelium differs from that of the other ‘diplolepideous-opposite’ families, Funariaceae and Encalypt...

Premise: The Sphagnum recurvum complex comprises a group of closely related peat mosses that are dominant components of many northern wetland ecosystems. Taxonomic hypotheses for the group range from interpreting the whole complex as one polymorphic species to distinguishing 6-10 species. The complex occurs throughout the Northern Hemisphere, and...

The Chilean endemic genus Costesia belongs to the Gigaspermaceae, one of the most basal groups of arthrodontous mosses. While none of the species in this family has a peristome, earlier stages of sporophyte development often disclose its basic structure. The study of Costesia sporophytes at the early stages of development was conducted to identify...

Sofronova E.V., Afonina O.M., Baisheva E.Z., Bersanova A.N., A.G. Bezgodov, Boychuk M.A., Degtyarev N.I., Doroshina G.Ya., Dulin M.V., Fedosov V.E., Gainutdinov I.A., Grishutkin O.G., Ignatov M.S., Ignatova E.A., Khramtsov V.N., Koroleva N.E., Kozhin M.N., Kuzmina E.Yu., Lavrentiev M.V., Philippov D.A., Popov S.Yu., Popova N.N., Prokin A.A., Rukavi...

We present a description of the new species Rhynchostegium occultum from central Chile, including illustrations, a distribution map, and preliminary molecular data that supports its taxonomic placement. The new taxon is restricted to coastal relict forests of central Chile. An overview of the Chilean taxa of Rhynchostegium, and a key for local spec...

Moss paraphyllia, the trichome-like or foliose structures on moss stem surfaces, are usually treated as epidermal outgrowths. However, in some taxa of the moss families Leskeaceae, Neckeraceae, and Amblystegiaceae their distribution along the stem is consistently correlated with parts of the stem surface near branch primordia. In other moss familie...