This local flora covers the largest area ca. 1,500 km². It is situated in the taiga zone (boreal evergreen conifer forests) along the southern border of Arkhangelsk Oblast. The primary mobilised source (Seregin and Goryainova 2003) included 544 numbered species. Five species known only from Chadroma, a distant locality on the NW corner of the studied area, were excluded to reduce coordinate uncertainty from 38,000 m to a reasonable 21,000 m. Four unnumbered Pilosella hybrids were included into the dataset, which finally lists 543 entries.

The Ustya flora is well documented by vouchers deposited at MWG Herbarium (Herbarium of Biogeography Department, Faculty of Geography, Lomonosov Moscow State University), including 232 specimens collected by the author in 2001 and 149 specimens in 2002 (collector's numbers from N-1 to N-380), as well as earlier collections by the department's staff. Unfortunately, there are no digitisation activities in this Herbarium at the moment.

This local flora (60 km²) was studied around the permanent camping site of the summer field practice of Faculty of Soil Science, Lomonosov Moscow State University. It is situated in the broadleaved forest zone (temperate deciduous hardwood forests) in Shchekino District, Tula Oblast. Two published sources were mobilised (Seregin 2011, Seregin 2015) which include 520 species discovered from 2005-2010 and an additional 73 species from 2011-2013. The centroid of the area is located in the camping site with proposed coordinate uncertainty 8,000 m.

The Zaseki flora is poorly documented by vouchers with the focus on common plants intensively collected by the students. The main herbarium set by the author is deposited at MHA Herbarium (Skvortsov Herbarium of Tsitsin Main Botanical Garden, Russian Academy of Sciences, Moscow). Only 15% of Eastern Europe holdings of this herbarium have been digitised so far (Seregin and Stepanova 2020); therefore, related occurrences from the MHA GBIF-mediated dataset (Seregin and Stepanova 2021) include only 85 specimens of 76 species collected from 2005-2013.

This local flora (70 km²) was also studied around the permanent camping site of the summer field practice of Faculty of Soil Science, Lomonosov Moscow State University. It is situated in the forest-and-steppe zone (an ecotone between temperate deciduous hardwood forests and dry temperate grasslands) in Dankov District, Lipetsk Oblast along the Don River. Two published sources were mobilised (Seregin 2011, Seregin 2015) which include 506 species discovered from 2005-2010 supplemented by 50 species found from 2011-2013. The centroid of the area is located in the camping site with proposed coordinate uncertainty 7,000 m. Three misidentified species from the first source (Seregin 2011) were excluded from the dataset, which finally lists 553 entries.

The Polibino flora is unevenly documented by vouchers with focus on common plants and species of grasslands intensively collected by the students. The main herbarium set by the author is deposited at MW Herbarium (Herbarium of Lomonosov Moscow State University). This Herbarium is completely digitised at the moment and fully available online (Seregin 2018), but related occurrences from the MW GBIF-mediated dataset (Seregin 2021b) include only 331 specimens of 256 species collected in this area from 2005-2013.

This local flora (200 km²) was studied within the borders of the northern part of Khrenovskoy Bor (Khrenovoye Pine Forest) near the permanent camping site of the summer field practice of Faculty of Soil Science, Lomonosov Moscow State University. It is situated on southern edge of the forest-and-steppe zone (an ecotone between temperate deciduous hardwood forests and dry temperate grasslands) in Bobrov District, Voronezh Oblast along the Bityug River. The mobilised primary source (Seregin 2015) includes 665 species discovered from 2005-2013. The centroid of the area is located in the middle of the pine forest with proposed coordinate uncertainty 16,000 m.

The Khrenovoye flora is poorly documented by vouchers, because the student excursions are not allowed to enter the pine forest in a fire-risk summer period. The main herbarium set by the author is deposited in MW Herbarium (Herbarium of Lomonosov Moscow State University). The related occurrences from the MW GBIF-mediated dataset (Seregin 2021b) include 263 specimens of 228 species collected here from 2005-2013.

The flora of isolated pine forests of Voronezh Oblast is extraordinarily rich. For instance, Starodubtseva (1999) encounted 1,032 species for Usmansky Pine Forest near Voronezh (ca. 700 km²). Tzvelev (1988) listed ca. 1,200 species for Khopersky Nature Reserve (162 km²) located in the Khopersky Pine Forest. Kin and Starodubtseva (2012) included 802 species into the checklist of Khrenovoye Pine Forest. This dataset documents the flora of the northern part (roughly a half) of Khrenovoye Pine Forest.

This local flora (10 km²) was studied within the borders of the Troyeruchitsa State Nature Reserve and three adjacent settlements. It is situated in the taiga zone (boreal evergreen conifer forests) in Ostashkov District, Tver Oblast along the eastern coast of Lake Seliger. The mobilised primary source (Seregin 2020) includes 501 species recorded from 2016-2019, i.e. 456 species records from the Reserve and 45 records along its borders. The centroid of the area is located on the southern coast of Lake Beloye with proposed coordinate uncertainty 3,000 m.

The Troyeruchitsa flora was not documented properly by herbarium vouchers. The related occurrences from the MW GBIF-mediated dataset (Seregin 2021b) include only 63 specimens of 51 species of special interest collected by the author from 2016-2019. Additionally, a dataset of georeferenced photos made in 2019 as part of the Troyeruchitsa Local Flora project on iNaturalist accounts for 434 observations of 358 species. These photo vouchers are available on GBIF (Ueda 2021) in line with the "Flora of Russia" initiative (Seregin et al. 2020).

These two local floras (ca. 300 km²) were studied within the borders of Man-Pupu-Ner and Middle Lyaga floristic divisions of Pechoro-Ilych State Reserve (Lavrenko et al. 1995). Earlier plant records for these divisions were occasional with 70 species known from Man-Pupu-Ner and 53 species from Middle Lyaga divisions (Ulle 2005), but no species lists were published to support these figures. Pechoro-Ilych Reserve is situated in Troitsko-Pechorsky District, Komi Republic on the western slope of the Urals. The Man-Pupu-Ner division covers mountain tundras and upper taiga belt, whereas Middle Lyaga division is fully located in the taiga elevational belt. The mobilised primary source (Seregin 2014) includes 325 species recorded in 2013 — 182 species in Man-Pupu-Ner and 143 species in Middle Lyaga. The centroid of the Man-Pupu-Ner division is located near the Reserve's cordon (coordinate uncertainty 8,500 m) and the centroid of the Middle Lyaga division is situated near the small winter hut (shelter) on the left bank of the Middle Lyaga River (coordinate uncertainty 10,000 m).

The Man-Pupu-Ner flora was fairly-well documented by herbarium vouchers, whereas a checklist for the Middle Lyaga division was primarily based upon vegetation relevés. The related occurrences from the MW GBIF-mediated dataset (Seregin 2021b) include 151 specimens — 131 specimens of 105 species from Man-Pupu-Ner (collector's numbers from U-166 to U-292) and 20 specimens of 19 species from Middle Lyaga (U-293 to U-311).

This local flora (195 km²) stretches along the coastal zone of Abrau Peninsula from Sukko to Yuzhnaya Ozereyevka. It includes the Navagir Range, the westernmost spur of the Caucasus in Anapa and Novorossiysk Districts, Krasnodar Krai. The area shelters the relic ecosystems of arid sub-Mediterranean forests.

The first detailed floristic data on the flora of the Abrau Peninsula were published by Flerov and Flerov (1926). They indicated 991 species for the Anapa - Novorossiysk coastal area with 654 records documented by specimens, but their collections were entirely lost. Some of their records are doubtful and believed to be erroneous according to the recent studies of vascular flora of the NW Transcaucasus (Zernov 2000). Later, the flora of the Abrau Peninsula was studied during individual trips of a number of botanists, but it has never received special interest. Zernov (2000) reported 1,461 species for the whole territory of the North-Western Transcaucasus from Anapa to Tuapse (ca. 5,100 km²), based on herbarium specimens.

Tutors and students of the Biogeography Department, Moscow State University have been visiting annually the Utrish area for studies in field camps since 1997. A preliminary checklist of the area included 485 species, based upon collections and observations from 1997-1999 and was published as a brief manual for students (Syomina and Suslova 2000). Seregin and Suslova (2002) reported an additional 268 species and Seregin and Suslova (2007a) published 148 new records from the area. The preliminary checklist and two additions formed the basis of the large survey which listed 872 species (Seregin and Suslova 2007b). With 103 new records, the mobilised primary source (Suslova et al. 2015) is the most comprehensive checklist of the Utrish area. It includes 933 species recorded mainly from 2001-2010. The centroid of the area is located near the Malyi Utrish Marine Station with proposed coordinate uncertainty 17,000 m.

The Utrish flora is precisely documented by vouchers deposited in the MWG Herbarium (Herbarium of Biogeography Department, Faculty of Geography, Lomonosov Moscow State University). By 2015, there were 2,970 specimens from the Utrish area in MWG (Suslova et al. 2015), including 848 collections by the author made from 2001-2005 (collector's numbers from C-1 to C-517 in 2001, C-518 to C-712 in 2004, C-713 to C-848 in 2005), as well as other collections by department's students and staff. Unfortunately, there are no digitisation activities in this Herbarium at the moment.

This small local flora (2.2 km²) was studied within the borders of the Leo Tolstoy memorial estate. It is situated in the broadleaved forest zone (temperate deciduous hardwood forests) in Shchekino District, Tula Oblast. The list of vascular plants from this location was never published as either a paper or a technical report. Currently, it includes 236 species recorded by the author in 2014 and 2017. The centroid of the flora is located near Tolstoy's tomb with proposed coordinate uncertainty 1,000 m.

The Yasnaya Polyana flora was not documented by vouchers during the author's field surveys, but some specimens from this location, collected by other botanists, can be found in TUL and MW GBIF-mediated datasets. For instance, 710 digitised specimens of 264 wild and cultivated species from Yasnaya Polyana are deposited at TUL Herbarium (Svetasheva and Seregin 2020, Svetasheva and Seregin 2021) and 67 digitised specimens of 57 species are available at MW Herbarium (Seregin 2021b).

This small local flora (1.7 km²) was studied within the borders of the historical landscape complex "Bogolyubovsky Meadow - Church of the Intercession on the Nerl", a site with a legal status of the regional protected area. This is a large managed meadow, situated in the flood plain of the Klyazma River in the ecotone zone of mixed broadleaved and conifer forest near Bogolyubovo, Vladimir Oblast. The list of vascular plants from this location was never published as a paper, but was available online as a technical report (Seregin 2010). This report with 289 species, recorded by the author in 2010, was mobilised.

The Bogolyubovsky Lug flora was poorly documented by vouchers during the author's field surveys with only 11 specimens of ten species available in the MW Herbarium dataset (Seregin 2021b). The author's data from all Vladimir Oblast localities collected from 1999-2020 were fully integrated into a recently updated grid dataset (Seregin 2021a, Seregin 2021c) with coordinate uncertainty 7,000 m, an average distance between a grid square centroid and a grid square corner. The centroid of the Bogolyubovsky Lug flora is located in the middle of the actual area with proposed coordinate uncertainty 1,100 m.

This small local flora (5.3 km²) was studied within the borders of the Tsaritsyno Museum-Estate, a site with a legal status of the regional protected area (as part of Tsaritsyno Nature Reserve). This is a large old park with a number of ponds, large lawns and managed meadows in the Southern Administrative Okrug, City of Moscow, situated in the ecotone zone of mixed broadleaved and conifer forests. The list of vascular plants from this location was never published as either a paper or a technical report. Currently, it includes 359 species recorded by the author in 2019.

The Tsaritsyno flora was not documented by herbarium vouchers during the author's field surveys, although a dataset of georeferenced photos made in 2019 was uploaded on iNaturalist. Thereby, photo vouchers of 773 observations of 337 species are available on GBIF (Ueda 2021) in line with the "Flora of Russia" initiative (Seregin et al. 2020).

This small local flora (1.1 km²) was studied within the borders of the Patakinskaya Grove Nature Sanctuary, a site with a legal status of regional protected area. The area includes a broadleaved forest on a steep south-faced slope of the Klyazma River valley and an adjacent birch forest. The sanctuary is situated in the ecotone zone of mixed broadleaved and conifer forests near Patakino, Kameshkovsky District, Vladimir Oblast. The list of vascular plants from this location was never published as a paper, but was available online as a technical report (Seregin 2013). I mobilised this report with 312 species recorded in 2010.

The Patakino flora was poorly documented by vouchers during the author's field surveys with only 20 specimens of 19 species available in MW Herbarium dataset (Seregin 2021b). The author's data were fully integrated into a recently updated Vladimir Oblast grid dataset with coordinate uncertainty 7,000 m (see section "10. Bogolyubovsky Lug" for the details). The centroid of the Patakino flora is located in the middle of the actual area with proposed coordinate uncertainty 1,000 m.