Taxonomic notes and distribution of Gueldenstaedtia (Chesneyinae, Fabaceae) in Mongolia

Shukherdorj Baasanmunkh,Batlai Oyuntsetseg,Zagarjav Tsegmed,Irina D. ILLARIONOVA,Nyamjantsan NYAMBAYAR,최혁재 한국식물분류학회 2022 식물 분류학회지 Vol.52 No.1

The genus Gueldenstaedtia Fisch. is small genus of Fabaceae that includes four species worldwide. Among these, G. monophylla Fisch and G. verna (Georgi) Boriss. are currently recognized as occurring in Mongolia. Here, we present our findings on G. verna from our recent field surveys in eastern Mongolia in 2020. Gueldenstaedtia monophylla is mostly distributed in the western region, whereas G. verna occurs in eastern Mongolia. The regional conservation status of both species was assessed as near threatened based on criterion B in the country. We provided descriptions, grid distribution maps, taxonomic notes and photographic illustrations of the two species based on our newly collected samples.

Notes on the taxonomy of Nymphaeaceae and Menyanthaceae in Mongolia

Shukherdorj Baasanmunkh,Batlai Oyuntsetseg,Magsar Urgamal,Joscelyn Norris,Takashi shiga,최재혁 국립중앙과학관 2022 Journal of Asia-Pacific Biodiversity Vol.15 No.1

In this study, we investigated four aquatic plants, namely Nuphar pumila (Timm) DC. and Nymphaeacandida C.Presl in Nympaeaceae as well as Menyanthes trifoliata L. and Nymphoides peltata (S.G. Gmel.)Kuntze in Menyanthaceae from Mongolia based on field surveys, herbariums, and scientific literature. Additionally In addition, we carefully examined for Nymphaea tetragona Georgi, which was previouslyrecorded in several lakes, Khar-Us, Khar, Buuntsagaan, and Tsetsegt as well as the Ider river in Mongolia. Because we did not find N. tetragona in the field and because it is difficult to identify from herbariumspecimens, we believe it has been misidentified at the Khar-Us, Khar, and Tsetsegt lakes to date. Moresurveys are needed to document its presence. Finally, we provide detailed distribution maps, photo illustrations,and taxonomic notes of four species.

Contribution to the knowledge on the flora of northern Mongolia

Shukherdorj Baasanmunkh,Batlai Oyuntsetseg,Khurelpurev Oyundelger,Khurelbaatar Khaliunaa,Magsar Urgamal,Nyam-Osor Batkhuu,Takashi shiga,정규영,최혁재 국립중앙과학관 2019 Journal of Asia-Pacific Biodiversity Vol.12 No.4

Field surveys were conducted in the northern part of Mongolia in 2017 and 2018. Vascular plants floristicdata are based on collections from the study area, and more than 800 new collections are made in thisstudy. In total, 289 taxa (8 subspecies and 6 variates) were identified, representing 173 genera from 60families of vascular plants. The families most diverse in species were Rosaceae with 28 taxa, followed byRanunculaceae (25 taxa), Asteraceae (19 taxa), and Fabaceae (19 taxa). The largest genera were Salix with11 species, followed by Viola (9 species) and Carex (9 species). Thirty-seven taxa are newly recorded forMongolian Dauria (8), Khangai (8), Khentei (4) and Khuvsgul (17) regions. Several threatened specieswere found in the field area. We provide photographs and distribution maps for species of Cypripedium(C. calceolus L., C. guttatum Sw., C. macranthos Sw., and C. ventricosum Sw.). In addition, Campanula cervicariawas newly recorded for the flora of Mongolia.

Cytotype distribution and ecology of Allium thunbergii (= A. sacculiferum) with a special reference to South Korean populations

Baasanmunkh SHUKHERDORJ,장주은,Martin DUCHOSLAV,최혁재 한국식물분류학회 2018 식물 분류학회지 Vol.48 No.4

Polyploidization plays an important role in generating the current high diversity of plants. Studies of the distributional patterns of diploid and derivative polyploid races have provided important insights into the evolutionary process and cryptic speciation by polyploidization within and between closely related taxa defined on the basis of their morphology. Allium thunbergii and A. sacculiferum, occurring throughout eastern Russia, eastern China, Korea, and Japan, are examples of closely related species with unsolved taxonomic relationships. A total of 97 and 65 individuals from 26 and 13 populations of A. thunbergii (including var. thunbergii, var. del- toids, and var. teretifolium) and A. sacculiferum, respectively, were studied to determine their ploidy. The geo- graphic structure and habitat differentiation of the cytotypes were also analyzed. The main cytotype of A. thunbergii was diploid (92.3% in total; the rest were tetraploids). In contrast, the majority of A. sacculiferum plants were tetraploids (69.2% of the total; the rest were diploids). No populations of the studied taxa harbored both cytotypes. Allium thunbergii was more often found at higher elevations than A. sacculiferum, and it tended to occur more frequently on rocky slopes and below forests in mountainous areas. On the other hand, A. sac- culiferum occurred at forest margins and in lowland pastures. The cytotypes differed with respect to the eleva- tion; diploids were found more frequently at higher elevations than tetraploids. The results of this study and additional biosystematics data indicate that the morphological characteristics of A. thunbergii and A. saccu- liferum may be influenced by polyploidization and by their adaptation to various habitat conditions and that A. thunbergii and A. sacculiferum do not clearly fulfill the requirements of any species concept. Consequently, we propose that A. sacculiferum be considered as an additional synonym of A. thunbergii. Additionally, Allium thunbergii var. deltoides is unified into A. thunbergii var. thunbergii.

Diversity and distribution of the genusPrimulaL. (Primulaceae) inMongolia

Shukherdorj Baasanmunkh,Nataliya K. Kovtonyuk,Batlai Oyuntsetseg,Zagarjav Tsegmed,Irina V. Han,Hyeok Jae Choi 국립중앙과학관 2020 Journal of Asia-Pacific Biodiversity Vol.13 No.4

This article represents a new checklist of the genusPrimulaL., including eight species andfive subspeciesbelonging to four sections that are native to Mongolia.Primula bukukunicaKovt. andP. nivalissubsp.turkestanica(J.H.Haage & E.Schmidt) Kovt. are newly recorded to theflora of Mongolia based on thematerials of LE, NS, NSK, MHA, MW, and UBA herbarium collections.Primula maximowicziiRegel wasassessed as critically endangered species based on the area of occupancy, in which it is estimated to occurin less than 10 km2in the eastern Mongolia. The nomenclatural type, identification key, regional con-servation status of rare species, as well as distribution maps and photographs of each species are pro-vided. Additional collections and photographs are based on ourfield survey between 2012 and 2019.

Contribution to the knowledge on the flora of Numrug Strictly Protected Area and some parts of East Mongolia

Baasanmunkh SHUKHERDORJ,Takashi shiga,Oyuntsetseg Batlai,Karsten Wesche,Christiane M. Ritz,Khaliunaa Khurelbaatar,김재영,Hyeong Jun Jo,바투후,정규영,최혁재 국립중앙과학관 2019 Journal of Asia-Pacific Biodiversity Vol.12 No.2

A floristic study of Eastern Mongolian Steppes has been conducted during the growing season of 2014 and continued in 2017, when we focused more on the Numrug Strictly Protected Area. Major objectives of this study were to assess floristic diversity of Eastern Mongolian Steppes and to review the conservation status of some endangered, rare, and very rare species. A total of 488 taxa of vascular plants, which belong to 254 genera of 75 families, including three endemic and 16 subendemic species were sampled. Among these were three endangered, three vulnerable, five near threatened, 16 very rare, and 39 rare species. Remarkably, Myriophyllum sibiricum and Typha latifolia are newly recorded for the flora of Mongolia. Moreover, new distribution records of some species were noted in four phytogeographical regions of Eastern Mongolia, such as Foothills of Great Khingan (30), East Mongolia (12), Mongolian Dauria (11), and Middle Khalkha (3). Finally, we assessed regional conservation status of the five species (two endangered and three vulnerable) from the East Mongolia using the International Union for Conservation of Nature Red List criteria and categories.

A taxonomic revision of Philadelphus (Hydrangeaceae) in South Korea

김영문,Shukherdorj Baasanmunkh,송준호,양선규,손동찬,최재혁 국립중앙과학관 2022 Journal of Asia-Pacific Biodiversity Vol.15 No.3

The genus Philadelphus (Hydrangeaceae) in South Korea is critically revised based on macro- and micro morphological characteristics from over 1,000 herbarium specimens, and fresh material from wild populations. Findings show that: (1) The presence/absence and the density of the hairs on the disk, pistil, calyx, leaves, and petiole and the degree of division of the style are insufficient characters for recognizing species in Philadelphus. (2) Philadelphus koreanus, P. robustus, P. scaber, and P. seoulensis were confirmed to be synonyms of P. tenuifolius. (3) Philadelphus lasiogynus is newly synonymized into P. tenuifolius based on the type material. (4) Philadelphus pekinensis has been excluded from the Korean flora because of prior misidentifications of herbarium specimens, whose identity is very sparsely pubescent P. tenuifolius. It is therefore confirmed that only P. tenuifolius has been recorded in South Korea. Detailed morphological descriptions, photographs, illustrations, distribution maps, and information on the herbarium materials of P. tenuifolius in South Korea are provided.

Genetic diversity of the threatened Saussurea dorogostaiskii (Asteraceae) in the Khuvsgul region of Mongolia

Nudkhuu NYAMGEREL,Shukherdorj Baasanmunkh,Batlai Oyuntsetseg,Dashzeveg OYUNTSETSEG,Joscelyn Norris,최혁재,Gun-Aajav BAYARMAA 한국식물분류학회 2023 식물 분류학회지 Vol.53 No.1

Saussurea dorogostaiskii Palib. (Asteraceae) is a critically endangered medicinal plant in Mongolia and Russia. We studied the genetic variation of S. dorogostaiskii from three mountains of northern Mongolia. The genetic profile was assessed in 70 individuals from eight populations using five inter-simple sequence repeat markers, producing 53 loci with 96.4% polymorphism across all bands. Shannon’s index (I) and Nei’s gene diversity (H) value at the species level of S. dorogostaiskii are 0.25 and 0.17, respectively. An AMOVA showed high genetic variation among the populations (22% of populations and 32% of mountains), consistent with the high genetic differentiation (GST = 0.49) and low gene flow (Nm = 0.51) in S. dorogostaiskii populations. Eight populations were clustered into two groups, corresponding to their geographic locations. The low within-population genetic diversity and high genetic differentiation among S. dorogostaiskii populations factor into their endangered designation. This genetic analysis reveals that all populations are equally threatened, and community-based conservation is appropriate for these species.

Predicting the current and future suitable habitats, species distribution, and conservation assessment of Fritillaria dagana (Liliaceae)

Zagarjav Tsegmed,Shukherdorj Baasanmunkh,Khurelpurev Oyundelger,Batlai Oyuntsetseg,Uudus Bayarsaikhan,Andrey Erst 국립중앙과학관 2023 Journal of Asia-Pacific Biodiversity Vol.16 No.3

Fritillaria dagana Turcz. has a restricted global distribution, occurring only in southern Siberia andnorthern Mongolia. Concerning its restricted distribution and endangered conservation status, we aimedto forecast its current and future suitable habitats as well as distribution shifts for 2050 and 2080. TheMaxent model with different scenarios (representative concentration pathway 4.5 and representativeconcentration pathway 8.5) was used to analyze 113 georeferenced records of F. dagana using 19bioclimatic factors from the WorldClim database. As a result, the amount and variance of precipitationand temperature, together with elevation, were shown to be the most significant factors affecting thespecies’ distribution. In particular, precipitation during the plant growing season had the greatest impact(55.2% variability) on the species distribution. Climate change was expected to cause a minor shift in thedistribution of suitable habitats toward the north and an increase in habitat continuity, indicating thatthe climate will become more favorable for the growth of species and in the future. The species’ highlysuitable area will remain primarily concentrated in its current potential distribution area in centralSiberia (around Lake Baikal). The species’ conservation status was determined to be near threatened,emphasizing the great relevance of facilitating proper conservation measures for F. dagana.

Contribution to the knowledge on the flora of Munkhkhairkhan mountain area, Mongolia

Oyuntsetseg Batlai,Baasanmunkh Shukherdorj,Oyundelger Khurelpurev,Munkhzul Oyunbileg,김재영,조형준,Batkhuu Nyam-Osor,정규영,최혁재 국립중앙과학관 2017 Journal of Asia-Pacific Biodiversity Vol.10 No.4

The Munkhkhairkhan mountain area is a unique highland ecosystem with a diverse regional alpine flora. This mountain habitat is located at the overlap of different floristic regions: on its western side Kazakhstan–Turan flora is dominating, and on the eastern side East Asian flora is observed. It is known that the whole area has a large number of endemics and rare plant species, because of its specific, harsh habitat conditions. Therefore, the flora of different habitats in the Munkhkhairkhan mountain needs to be investigated and properly protected. Munkhkhairkhan National Park has been founded in 2006, and our survey concentrated on the protected area as well as the surrounding areas of the mountains. All recorded species in this study were based on the collected voucher specimens. Conservation status for remarkable species was also reviewed based on the literature. As a result, we recorded 40 families, 150 genera, and 267 species of vascular plants, including four endemic and 34 subendemic species and 15 species' new distribution notes. Around the Munkhkhairkhan mountain, 16 very rare, 21 rare, eight endangered, and two near threatened species are growing, indicating the high conservation value of this area and the necessity for research.