Occurrences of Threatened Species included in the Third Edition of the Red Data Book of the Komi Republic (Russia).

BACKGROUND: The purpose of the data paper was to introduce into scientific literature the results of scientific work carried out for the third edition of the 'Red Data Book of the Komi Republic'. The article reflects methodological approaches to the formation of a list of rare and in need of protection species and describes the corresponding datasets published in GBIF. NEW INFORMATION: Information about 7,187 occurrences of 438 rare species and infraspecies included in the third edition of the 'Red Data Book of the Komi Republic' have been published.

Phylogenetic relationships and status of taxa of Pulsatilla uralensis and P. patens s.str. (Ranunculaceae) in north-eastern European Russia.

We studied the allopatric complex Pulsatilla patens (L.) Mill. s.lat. (Ranunculaceae) in north-eastern European Russia and the Urals. In this region, there are two kinds of P. patens with different perianth colours in monochrome and polychrome populations. To clarify their taxonomic boundaries, we used the sequences of chloroplast DNA (rbcL and matK) and nuclear DNA (ITS2), in addition to morphological characteristics. The combination of three markers (rbcL+matK+ITS2) was found to be the most effective for phylogenetic resolution. The samples of two morphologically-different taxa P. uralensis and P. patents s.str. were shown to form a single clade on the phylogenetic tree. Based on the molecular phylogenetic analysis, we were not able to unequivocally prove the independent existence of P. uralensis.

Population and molecular datasets for Gymnadenia conopsea (Orchidaceae).

The paper presents data on the ecological and phytocoenotic conditions of habitats of the G. conopsea (L.) R. Br. orchid in the Northeast of European Russia (Komi Republic, Russia). The data include characteristics of the populations of this species on the northern border of its range (size and ontogenetic structure of the populations, density of specimens, phenology), as well as information demonstrating the genetic variability of the species by ISSR-markers that was not included in the main publication. The data presented here supplement our earlier published results O.E.Valuyskikh et al., 2019 and are useful for more detailed analysis of population biology and genetic variability of this rare orchid species. G. conopsea is the species of terrestrial orchids widespread in Europe and Asia and characterized by the widest ecological-cenotic amplitude and occurrence in different types of ecotopes. The size of G. conopsea populations in different parts of its range is usually small, 25-100 ind. but sometimes increases to 200-1000 ind. Hansen et al., 1999 to Travnichek et al., 2012. In the many regions of the Russian Federation, the G. conopsea are subject to protection due to the small number of habitats, long stages of ontogenesis, low population sizes and anthropogenic impact. The complex of G. conopsea s.l. included in the Red Data Book of the Komi Republic Taskaev, 2009.