Pendent sessile flowers of Chamaelirium japonicum (Willd.) N. Tanaka appear zygomorpic, but they do not possess a bilateral symmetry. The flowers are subtended by a vestigial bract and lack a bracteole. The perianth consists of two small tepals on the abaxial side of the flower and four large tepals, none of which is median. Because the short tepals belong to different whorls, there is no symmetry plane. Despite the absence of a bracteole, the shape of the floral meristem before perianth inception resembles that of bracteolate monocot flowers. At early stages, all six tepals are equal in shape and size, and the flower is actinomorphic. The difference between the dorsal and ventral sides and the pendent nature of the flower become expressed during the gynoecium development. The absence of median organs allows to avoid collision of floral organs with the flower-subtending bract during flower curvature. Species of Chamaelirium reveal a set of different flower groundplans, which makes the genus a perfect model to investigate evolutionary changes in flower symmetry accompanied by differential tepal reduction.
{"title":"When asymmetry mimics zygomorphy: flower development in Chamaelirium japonicum (Melanthiaceae, Liliales)","authors":"M. Remizowa, A. Shipunov, D. Sokoloff","doi":"10.17581/bp.2023.12s01","DOIUrl":"https://doi.org/10.17581/bp.2023.12s01","url":null,"abstract":"Pendent sessile flowers of Chamaelirium japonicum (Willd.) N. Tanaka appear zygomorpic, but they do not possess a bilateral symmetry. The flowers are subtended by a vestigial bract and lack a bracteole. The perianth consists of two small tepals on the abaxial side of the flower and four large tepals, none of which is median. Because the short tepals belong to different whorls, there is no symmetry plane. Despite the absence of a bracteole, the shape of the floral meristem before perianth inception resembles that of bracteolate monocot flowers. At early stages, all six tepals are equal in shape and size, and the flower is actinomorphic. The difference between the dorsal and ventral sides and the pendent nature of the flower become expressed during the gynoecium development. The absence of median organs allows to avoid collision of floral organs with the flower-subtending bract during flower curvature. Species of Chamaelirium reveal a set of different flower groundplans, which makes the genus a perfect model to investigate evolutionary changes in flower symmetry accompanied by differential tepal reduction.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67441521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A study of diatoms from the Tolmachev Reservoir (Kamchatka) was carried out using electron microscopy. As a result, 45 species and varieties of Bacillariophyta from 28 genera were identified, and 4 algae were identified only to the genus level. 12 species from 11 genera, new for the flora of Kamchatka diatoms, were found. Most of the new taxa for Kamchatka flora are rare species, and our study expanded their range.
{"title":"Diatoms (Bacillariophyta) of the Tolmachev reservoir (Kamchatka, Russia)","authors":"S. Genkal, E. Lepskaya","doi":"10.17581/bp.2023.12101","DOIUrl":"https://doi.org/10.17581/bp.2023.12101","url":null,"abstract":"A study of diatoms from the Tolmachev Reservoir (Kamchatka) was carried out using electron microscopy. As a result, 45 species and varieties of Bacillariophyta from 28 genera were identified, and 4 algae were identified only to the genus level. 12 species from 11 genera, new for the flora of Kamchatka diatoms, were found. Most of the new taxa for Kamchatka flora are rare species, and our study expanded their range.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67439060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pilar Catalán, María Ángeles Decena, R. Sancho, J. Viruel, E. Pérez-Collazos, L. A. Inda, N. Probatova
Brachypodium sylvaticum has been selected as a model for perennial grasses, and considerable genomic resources have been generated and a reference genome and several resequenced pangenome accessions are available for this species. Despite these genomic advances, the evolution and systematics of diploid B. sylvaticum s. l. is almost unknown. The B. sylvaticum complex is formed by up to seven taxonomically close micro-taxa which differentiate from typical B. sylvaticum s. s. based on a few morphological features. Moreover, some of them show some largely disjunct geographic distributions on both sides of their native Palearctic region. In this study, we used a phylogenomic approach including representative populations from the oriental and occidental distribution range of B. sylvaticum micro-taxa to elucidate their evolutionary relationships and assess the systematic value of the morphological features that separate them. A combined plastome and nuclear phylogenetic tree supports an early split and high divergence of the oriental lineage, showing the close relationship of the Himalayan B. sylvaticum var. breviglume lineages to the Pacific B. miserum / B. kurilense clade, and the contrasting large homogeneity and low divergence of the occidental European, N African and SW and C Asian lineage, with several B. sylvaticum s. s., B. spryginii, and B. glaucovirens samples showing identical or similar sequences. Divergence time estimate analysis suggests that the oriental lineage diverged from the common ancestor in the early Pleistocene (2.0 Ma), followed by subsequent colonization and isolations in the Himalayas (2.0 – 1.7 Ma) and the Far East (0.36 Ma) in more recent times, while the occidental lineage split in the Mid-Late Pleistocene (0.97 Ma), followed by rapid radiation and postglacial spread in the western Paleartic during the last thousand years.
{"title":"Phylogenetics of the Paleartic model grass Brachypodium sylvaticum uncovers two divergent oriental and occidental micro-taxa lineages","authors":"Pilar Catalán, María Ángeles Decena, R. Sancho, J. Viruel, E. Pérez-Collazos, L. A. Inda, N. Probatova","doi":"10.17581/bp.2023.12119","DOIUrl":"https://doi.org/10.17581/bp.2023.12119","url":null,"abstract":"Brachypodium sylvaticum has been selected as a model for perennial grasses, and considerable genomic resources have been generated and a reference genome and several resequenced pangenome accessions are available for this species. Despite these genomic advances, the evolution and systematics of diploid B. sylvaticum s. l. is almost unknown. The B. sylvaticum complex is formed by up to seven taxonomically close micro-taxa which differentiate from typical B. sylvaticum s. s. based on a few morphological features. Moreover, some of them show some largely disjunct geographic distributions on both sides of their native Palearctic region. In this study, we used a phylogenomic approach including representative populations from the oriental and occidental distribution range of B. sylvaticum micro-taxa to elucidate their evolutionary relationships and assess the systematic value of the morphological features that separate them. A combined plastome and nuclear phylogenetic tree supports an early split and high divergence of the oriental lineage, showing the close relationship of the Himalayan B. sylvaticum var. breviglume lineages to the Pacific B. miserum / B. kurilense clade, and the contrasting large homogeneity and low divergence of the occidental European, N African and SW and C Asian lineage, with several B. sylvaticum s. s., B. spryginii, and B. glaucovirens samples showing identical or similar sequences. Divergence time estimate analysis suggests that the oriental lineage diverged from the common ancestor in the early Pleistocene (2.0 Ma), followed by subsequent colonization and isolations in the Himalayas (2.0 – 1.7 Ma) and the Far East (0.36 Ma) in more recent times, while the occidental lineage split in the Mid-Late Pleistocene (0.97 Ma), followed by rapid radiation and postglacial spread in the western Paleartic during the last thousand years.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67440433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lyudmila S. Kuzminova, M.M. Salnikova, Tatiana N. Vinogradova
The article provides a description of the mycorrhiza in the roots of a generative specimen of Epipactis papillosa Franch. et Sav. (Orchidaceae). The percentage of bark cells inhabited by fungi and the intensity of mycorrhizal infection were calculated in all roots formed in 2010, 2011 and 2012 along all their length. Fungi were distributed in the roots irregularly, being concentrated in one or more zones. The possible connection between mycorrhizal development and weather conditions in corresponding years are discussed. Whereas according to the literature data E. papillosa is considered to be weakly mycotrophic species, with an average intensity of mycorrhizal infection of only 15 %, we found much higher average intensity in the studied specimen, up to 54 %. The possibility of secondary colonization of older roots by fungi in studied specimen was not confirmed.
{"title":"Remarks on the spatial distribution of mycorrhiza in the roots of Epipactis papillosa (Orchidaceae)","authors":"Lyudmila S. Kuzminova, M.M. Salnikova, Tatiana N. Vinogradova","doi":"10.17581/bp.2023.12s07","DOIUrl":"https://doi.org/10.17581/bp.2023.12s07","url":null,"abstract":"The article provides a description of the mycorrhiza in the roots of a generative specimen of Epipactis papillosa Franch. et Sav. (Orchidaceae). The percentage of bark cells inhabited by fungi and the intensity of mycorrhizal infection were calculated in all roots formed in 2010, 2011 and 2012 along all their length. Fungi were distributed in the roots irregularly, being concentrated in one or more zones. The possible connection between mycorrhizal development and weather conditions in corresponding years are discussed. Whereas according to the literature data E. papillosa is considered to be weakly mycotrophic species, with an average intensity of mycorrhizal infection of only 15 %, we found much higher average intensity in the studied specimen, up to 54 %. The possibility of secondary colonization of older roots by fungi in studied specimen was not confirmed.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135319611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
According to the results of an experimental study of the closely related species Elymus ciliaris and E. amurensis growing in the Russian Far East, Elymus ciliaris should be considered as a single polymorphic species comprising four varieties, including var. amurensis. Two varieties are described for the first time. Descriptions and photographs of the typal specimens are given.
{"title":"New varieties of Elymus ciliaris (Poaceae: Triticeae) from the Russian Far East","authors":"E. Shabanova, A. Agafonov","doi":"10.17581/bp.2023.12102","DOIUrl":"https://doi.org/10.17581/bp.2023.12102","url":null,"abstract":"According to the results of an experimental study of the closely related species Elymus ciliaris and E. amurensis growing in the Russian Far East, Elymus ciliaris should be considered as a single polymorphic species comprising four varieties, including var. amurensis. Two varieties are described for the first time. Descriptions and photographs of the typal specimens are given.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67439218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chlamydomonas-like green microalgae are unicellular biflagellate organisms from the order Volvocales, which are widely distributed in terrestrial ecosystems. Recent studies have shown that they belong to different phylogenetic lineages. The exact establishment of the taxonomic affiliation of these representatives is based on integrative approach, including multigene phylogeny along with light and electron microscopy, which also allows us to get the most accurate information about their biogeography. In this study, we examined the terrestrial green Chlamydomonas-like microalga, isolated from soil of the South-Eastern Altai Mountains in Russia. Based on molecular data of the nuclear 18S and plastid rbcL gene, we refer this alga to Chloromonas actinochloris within a robust clade of the genus Chloromonas, the phylogroup Chloromonadinia. This species was described from North America (USA). It is the first discovery of C. actinochloris in the mountains of Southern Siberia, as well as the first record of the species in Russia confirmed by molecular phylogeny and microscopy methods. The description of C. actinochloris, information on its biology and geography was supplemented. It is generally accepted that the phylogenetic clade including C. actinochloris should be revised and reassigned to a new genus soon. Our study shows that vegetative cells of Chloromonadinia algae can have ornamented cell wall that was mainly known for resting cells (cysts/zygotes) in a number of chlamydomonads, more rarely for vegetative cells. The structures on the wall of vegetative cells of Chlamydomonaslike microalgae can serve as an additional diagnostic criterion.
{"title":"Amendments to the description of Chloromonas actinochloris (Chlorophyta) inferred from the study of the South Siberian finding","authors":"I. Egorova, N. Kulakova, O. Boldina","doi":"10.17581/bp.2023.12105","DOIUrl":"https://doi.org/10.17581/bp.2023.12105","url":null,"abstract":"Chlamydomonas-like green microalgae are unicellular biflagellate organisms from the order Volvocales, which are widely distributed in terrestrial ecosystems. Recent studies have shown that they belong to different phylogenetic lineages. The exact establishment of the taxonomic affiliation of these representatives is based on integrative approach, including multigene phylogeny along with light and electron microscopy, which also allows us to get the most accurate information about their biogeography. In this study, we examined the terrestrial green Chlamydomonas-like microalga, isolated from soil of the South-Eastern Altai Mountains in Russia. Based on molecular data of the nuclear 18S and plastid rbcL gene, we refer this alga to Chloromonas actinochloris within a robust clade of the genus Chloromonas, the phylogroup Chloromonadinia. This species was described from North America (USA). It is the first discovery of C. actinochloris in the mountains of Southern Siberia, as well as the first record of the species in Russia confirmed by molecular phylogeny and microscopy methods. The description of C. actinochloris, information on its biology and geography was supplemented. It is generally accepted that the phylogenetic clade including C. actinochloris should be revised and reassigned to a new genus soon. Our study shows that vegetative cells of Chloromonadinia algae can have ornamented cell wall that was mainly known for resting cells (cysts/zygotes) in a number of chlamydomonads, more rarely for vegetative cells. The structures on the wall of vegetative cells of Chlamydomonaslike microalgae can serve as an additional diagnostic criterion.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67439693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new genus Sacciolepis (Poaceae), represented by S. indica (L.) Chase, was discovered in the vicinity of the Nature Monument "Golubinyi Utyos" (Dove Cliff), Khasan District, Primorye Territory, Russia. The description of the species is given, its habitat and ecological and cenotic features are characterized.
{"title":"Sacciolepis Nash (Poaceae: Panicoideae: Paniceae) – a new genus to the flora of Russia","authors":"E. A. Chubar, N. Probatova","doi":"10.17581/bp.2023.12115","DOIUrl":"https://doi.org/10.17581/bp.2023.12115","url":null,"abstract":"A new genus Sacciolepis (Poaceae), represented by S. indica (L.) Chase, was discovered in the vicinity of the Nature Monument \"Golubinyi Utyos\" (Dove Cliff), Khasan District, Primorye Territory, Russia. The description of the species is given, its habitat and ecological and cenotic features are characterized.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67440040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Polyakova, Y. Golovanov, S. Yamalov, M. Lebedeva, Z. Shigapov
The results of long-terms vegetation studies of the Kulan plateau, which is located in the Badhyz reserve in the southeastern Turkmenistan, are presented. The geographical position of the region and the diversity of landscapes promoted to the formation of the specific flora, represented by various groups of Mediterranean, Iranian, Turanian, as well as Middle and Central Asian species. Very specific ephemeroid plant communities with Poa bulbosa и Carex pachystylis dominated in lower layer were syntaxonomically studied for the first time. The upper layer includes the tall herbs, especially Ferula badrakema, an endemic species of Badhyz. Communities were classified as the suballiance Poo bulbosae– Ferulenion badrakemii suball. nov. of the alliance Vulpio persicae–Caricion pachystylidis Świerszcz et al. 2020 of the order Cymbopogono–Brachypodietalia ramosi Horvatič 1963 of the class Lygeo sparti–Stipetea tenacissimae Rivas-Mart. 1978 nom. conserv. propos. Сommunities of grasses on slight turf sands are classified as part of the provisional alliance Stipagrostion pennati prov. The position of the alliance in the system of high-rank syntaxa has not yet been determined. The 5 new associations and 6 subassociations were allocated.
{"title":"Ephemeroid vegetation of the Kulan Plateau in the Badhyz Reserve (Turkmenistan)","authors":"N. Polyakova, Y. Golovanov, S. Yamalov, M. Lebedeva, Z. Shigapov","doi":"10.17581/bp.2023.12110","DOIUrl":"https://doi.org/10.17581/bp.2023.12110","url":null,"abstract":"The results of long-terms vegetation studies of the Kulan plateau, which is located in the Badhyz reserve in the southeastern Turkmenistan, are presented. The geographical position of the region and the diversity of landscapes promoted to the formation of the specific flora, represented by various groups of Mediterranean, Iranian, Turanian, as well as Middle and Central Asian species. Very specific ephemeroid plant communities with Poa bulbosa и Carex pachystylis dominated in lower layer were syntaxonomically studied for the first time. The upper layer includes the tall herbs, especially Ferula badrakema, an endemic species of Badhyz. Communities were classified as the suballiance Poo bulbosae– Ferulenion badrakemii suball. nov. of the alliance Vulpio persicae–Caricion pachystylidis Świerszcz et al. 2020 of the order Cymbopogono–Brachypodietalia ramosi Horvatič 1963 of the class Lygeo sparti–Stipetea tenacissimae Rivas-Mart. 1978 nom. conserv. propos. Сommunities of grasses on slight turf sands are classified as part of the provisional alliance Stipagrostion pennati prov. The position of the alliance in the system of high-rank syntaxa has not yet been determined. The 5 new associations and 6 subassociations were allocated.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67440270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diana R. Iunusova, Maria A. Polezhaeva, Elena A. Marchuk
A high genetic variability was revealed in the populations of the Rhododendron subsection Ledum species complex in Sakhalin. In total, 94 individuals from natural populations of the four sympatric species of Labrador tea (R. tomentosum, R. subarcticum, R. tolmachevii and R. hypoleucum) were analyzed to evaluate the genetic variation in the territory of the Sakhalin Island and in two mainland populations. The haplotype diversity of five chloroplast intergenic spacers (trnH–psbA, petB–petD, 3’trnV (UAC)–ndhC, K2R–K707, atpB–rbcL) was quite high. There were 16 haplotypes (h1–h16) identified; h1, h2 and h4 are the most common, the rest were rare and no species-specific ones were found. Analysis of Molecular Variance (AMOVA) indicate that about 37 % of the genetic diversity is due to among population differences (FST = 0.37, p < 0.001). Molecular phylogenetic analysis based on chloroplast DNA data did not reveal a clear species structure, but revealed a trend towards the isolation of two genetic groups: including a group of samples from the southern and the middle parts of Sakhalin Island.
库页岛杜鹃花子种群具有较高的遗传变异性。利用拉布拉多茶4个同域种(毛毛茶、亚北极茶、托马切夫茶和亚北极茶)自然居群的94个个体，分析了库页岛地区和2个大陆居群的遗传变异。5个叶绿体基因间间隔物trnH-psbA、petB-petD、3'trnV (UAC) -ndhC、K2R-K707、atpB-rbcL的单倍型多样性较高。共鉴定出16个单倍型(h1 ~ h16);H1, h2和h4是最常见的，其余的是罕见的，没有发现物种特异性。分子方差分析(AMOVA)表明，约37%的遗传多样性是由群体间差异造成的(FST = 0.37, p <0.001)。基于叶绿体DNA数据的分子系统发育分析没有显示出明确的物种结构，但显示出两个遗传群体的分离趋势:包括来自萨哈林岛南部和中部的一组样本。
{"title":"Genetic diversity of the Rhododendron subsection Ledum species in Sakhalin Island: data from chloroplast DNA markers variability","authors":"Diana R. Iunusova, Maria A. Polezhaeva, Elena A. Marchuk","doi":"10.17581/bp.2023.12209","DOIUrl":"https://doi.org/10.17581/bp.2023.12209","url":null,"abstract":"A high genetic variability was revealed in the populations of the Rhododendron subsection Ledum species complex in Sakhalin. In total, 94 individuals from natural populations of the four sympatric species of Labrador tea (R. tomentosum, R. subarcticum, R. tolmachevii and R. hypoleucum) were analyzed to evaluate the genetic variation in the territory of the Sakhalin Island and in two mainland populations. The haplotype diversity of five chloroplast intergenic spacers (trnH–psbA, petB–petD, 3’trnV (UAC)–ndhC, K2R–K707, atpB–rbcL) was quite high. There were 16 haplotypes (h1–h16) identified; h1, h2 and h4 are the most common, the rest were rare and no species-specific ones were found. Analysis of Molecular Variance (AMOVA) indicate that about 37 % of the genetic diversity is due to among population differences (FST = 0.37, p < 0.001). Molecular phylogenetic analysis based on chloroplast DNA data did not reveal a clear species structure, but revealed a trend towards the isolation of two genetic groups: including a group of samples from the southern and the middle parts of Sakhalin Island.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135317702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Validation and description of new syntaxa of the boreal light coniferous forests of North Asia in the Braun-Blanquet system was carried out in accordance with the latest 4th edition of the International Code of Phytosociological Nomenclature. These are the alliance Ledo palustris–Laricion cajanderi Ermakov all. nov. and the order Ledo palustris–Laricetalia cajanderi Ermakov ord. nov. For all these syntaxa, the diagnostic species, peculiarities of ecology and phytocenotic structure, as well as geographical area are indicated. Prodromus of the validated order Ledo palustris–Laricetalia cajanderi is presented.
{"title":"Syntaxonomic notes on the order Ledo palustris–Laricetalia (Siberian boreal cryo-mesophilous larch forests): validation and description","authors":"N. Ermakov","doi":"10.17581/bp.2023.12108","DOIUrl":"https://doi.org/10.17581/bp.2023.12108","url":null,"abstract":"Validation and description of new syntaxa of the boreal light coniferous forests of North Asia in the Braun-Blanquet system was carried out in accordance with the latest 4th edition of the International Code of Phytosociological Nomenclature. These are the alliance Ledo palustris–Laricion cajanderi Ermakov all. nov. and the order Ledo palustris–Laricetalia cajanderi Ermakov ord. nov. For all these syntaxa, the diagnostic species, peculiarities of ecology and phytocenotic structure, as well as geographical area are indicated. Prodromus of the validated order Ledo palustris–Laricetalia cajanderi is presented.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67439601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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