The aim of the present study is to update the checklist of vascular plants endemic to Mongolia using previous checklists, publications, herbarium collections, and field observations. The revised checklist includes 102 endemic taxa (95 species, five subspecies, and two nothospecies) from 43 genera and 19 families. The majority of endemic taxa were distributed in western and central Mongolia, and high endemic species richness was identified in four phytogeographical regions, namely Mongolian Altai, Khangai, Dzungarian Gobi, and Gobi Altai, which harbor 49, 27, 20, and 16 endemic taxa, respectively. For each endemic taxon, we compiled information about growth form, conservation status (if already assessed), phytogeographical distribution, and voucher specimens. Data on each taxon’s type specimen were also collected, and the majority of the type specimens were accessioned at the LE (58 taxa), MW (20 taxa), and UBA (7 taxa) herbaria.

Morphological identification of Pedicularis depends on floral characters. However, some important characters may be lost during the process of pressing the specimen. Pedicularis delavayi was described from northwestern Yunnan, and widely adopted as a variety of P. siphonantha. Unfortunately, the name “P. siphonantha var. delavayi’ incorrectly referred to P. milliana (a new species described in this study) or P. tenuituba in some herbarium specimens and publications. Moreover, phylogenetic relationships among P. delavayi, P. siphonantha and its allies (P. milliana and P. tenuituba) were not fully resolved. In this study, we sampled 76 individuals representing 56 taxa. Of them, 10 taxa were from P. siphonantha lineage, and 11 individuals of P. delavayi represented 9 populations. These species were named as P. siphonantha group on the basis of morphological similarity. Nuclear ribosomal internal transcribed spacer (nrITS) and four chloroplast genes/regions were used for phylogenetic analyses. Phylogenetic analyses showed that the P. siphonantha group was polyphyletic: P. delavayi was sister to P. obliquigaleata in clade A; and the remaining species of P. siphonantha group were monophyletic in clade B, named as P. siphonantha lineage. In the P. siphonantha lineage, P. milliana, P. siphonantha, and P. tenuituba were well supported as monophyletic, and P. dolichosiphon was sister to P. leptosiphon. Morphologically, P. delavayi differs from species of the P. siphonantha lineage in having a long petiole (~ 50 mm) and pedicel (~ 40 mm), a ridged corolla tube, and a folded lower-lip of the corolla. Therefore, both morphological characters and phylogenetic evidence strongly supported to reinstate P. delavayi as an independent species and describe P. milliana as new species. In addition, P. neolatituba was proposed to reduce as a new synonymy of P. delavayi.

Background. Morphological identification of Pedicularis depends on floral characters because interspecific variations these characters is very large. However, some important characters may be lost during the process of pressing the specimen. Pedicularis delavayi was described from Lijiang, northwestern Yunnan, and it was widely adopted as a variety of P. siphonantha. Unfortunately, the name “P. siphonantha var. delavayi’ incorrectly referred to P. milliana/P. tenuituba in some identified specimens and publications. Moreover, phylogenetic relationships between P. delavayi and P. siphonantha and its allies (P. millana and P. tenuituba) were not fully resolved. Methods. In total, we sampled 75 individuals representing 56 taxa. Of them, 10 taxa were from P. siphonantha group, and 11 individuals of P. delavayi represented 9 populations. One nuclear gene (nrITS) and four chloroplast genes/regions (matK, rbcL, trnH-psbA, and trnL-F) were sequenced for phylogenetic analyses. The nrITS and plastid datasets were combined to analyze. Bayesian Inference (BI) and Maximum Likelihood (ML) methods were used to reconstruct phylogenetic trees. Species identification, morphological comparison and line drawing were based on field observation, dried herbarium specimens and FFA-fixed samples. Results. Phylogenetic analyses showed that the P. siphonantha group was polyphyletic: monophyletic P. delavayi, sister to P. obliquigaleata, fell into clade A; and the remaining species of P. siphonantha group was in clade B as monophyletic (i.e. P. siphonantha lineage). In the P. siphonantha lineage, P. milliana, P. siphonantha, and P. tenuituba (= P. siphonantha var. stictochila) were well supported as monophyletic, and P. dolichosiphon (≡ P. siphonantha var. dolichosiphon) was sister to P. leptosiphon. Morphologically, P. delavayi differs from species of the P. siphonantha lineage in having a long petiole (~ 50 mm) and pedicel (~ 40 mm), a ridged corolla tube, and a folded lower-lip of the corolla. Discussion. Phylogenetic analyses showed evolution of P. delavayi was independent from the P. siphonantha lineage. The long-tubular corollas in P. delavayi and P. siphonantha lineage might be a convergent character. Both morphological and phylogenetic evidence strongly supported to reinstate P. delavayi as an independent species. In addition, P. neolatituba was proposed to reduce as a new synonymy of P. delavayi.

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Статья содержит данные о типовом материале 75 таксонов (59 видов, 2 подвида, 12 разновидностей и 2 формы) семейства Гречиховые (Polygonaceae Juss.), хранящемся в секторе Сибири и Дальнего Востока Гербария Ботанического института им. В.Л. Комарова РАН (LE). Приведены сведения о типах как названий, принятых в «Определителе сосудистых растений советского Дальнего Востока» (Tzvelev, 1989) и во «Флоре Сибири» (Tupitsyna, 1992), так и названий, упомянутых в них в качестве синонимов. Summary. Data on type material of 75 taxa of the family Polygonaceae Juss. kept in the Herbarium of the Komarov Botanical Institute (LE) are summarized in the paper. Information is given about types of both the names accepted in the "Vascular plants of the Soviet Far East" and "Flora of Siberia" and the names treated as synonyms. Грабовская-Бородина A.Е. Типовые образцы Polygonaceae Сибири и российского Дальнего Востока, хранящиеся в LE ность) и 1 неотипа (вид), фактически осуществленный ранее Н. Н. Цвелёвым и (1 лектотип разновидности) Ю. С. Григорьевым. Aconogonon alpinum (All.