Papers by Dariusz Szlachetko
Biodiversitas Journal of Biological Diversity
The article presents the results of studying the current state of populations of a rare species-D... more The article presents the results of studying the current state of populations of a rare species-Dactylorhiza fuchsii in the Kazakhstan Altai. As a result of expeditionary studies, four main regions were identified, which were represented by 12 populations. Floristic plasticity according to the Jaccard coefficient (12-24%) showed a high heterogeneity in the studied populations. The cluster population dendrogram showed a clear dependence of the floristic composition of accompanying species on geographic location in terms of species similarity and differences of communities. External similarity was studied according to 10 morphometric features. The PCA analysis shows that the external structure is influenced by vertical zoning. Pearson's correlation analysis showed a stable direct and inverse dependence of morphometric characteristics on some environmental conditions (0.74-0.95). According to the data ANOVA disperse analysis, among studied environmental factors, soil nutrient richness (N) and humidity (F) had demonstrated the broadest significant effects (P-values from < 2e-16 to 0.001 for N and from 8.02e-09 to 0.02 for F) on plants morphology influencing eight out of ten morphological traits. Distribution regions of D. fuchsii have low vitality, and most populations are characterized as depressed. The results harmoniously complement the fundamental research on the state of D. fuchsii populations throughout the distribution range of the species.
Diversity
A critical study of the herbarium material representing the orchid genus Dactylorhiza Necker ex N... more A critical study of the herbarium material representing the orchid genus Dactylorhiza Necker ex Nevski in Kazakhstan was conducted in 2019–2020. The information on the species composition was clarified. Dactylorhiza fuchsii subsp. hebridensis (Wilmott) Soó and D. × kerneri (Soó) Soó were identified for the first time in the country. New taxa were noted for individual botanical and geographical areas. All taxa were presented in the list and annotated with studied herbarium materials from the Kazakhstan area. Based on the collected and available locations for the studied taxa, distribution modeling was carried out for the four taxa (D. incarnata, D. majalis subsp. baltica, D. salina, and D. umbrosa). Bioclimatic data for the present and future (2041–2060) based on four possible scenarios were used. The occurrence of Dactylorhiza representatives in Kazakhstan is threatened by global climate warming. It is likely that some of them may not occur in the country in the future (D. incarnata...
International Journal of Molecular Sciences
Dendrobium is one of the most species-rich genera of the Paleotropical orchids. It embraces more ... more Dendrobium is one of the most species-rich genera of the Paleotropical orchids. It embraces more than 1000 species, most of which are epiphytes. The strong variation in floral characters causes many identification difficulties within this genus. One of the key structures, often sufficient in identification on a species level, is the labellum, which in many species of Dendrobium possesses a thickened callus and various types of trichomes and papillae. The aim of this study is to identify and describe the structures present on the labellum surface of the analyzed species, determine their distribution and density, as well as to check whether the obtained data have taxonomic value. In this paper, we present the results of a micromorphological study on the labellum of 21 species of Dendrobium, representing 13 sections, using scanning electron microscopy (SEM). Our studies revealed the presence of both uni- and multicellular structures on the surface of the labellum. We observed three typ...
The lectotypification of six names of species, originally described as Evelyna Lind. (Orchidaceae... more The lectotypification of six names of species, originally described as Evelyna Lind. (Orchidaceae), based on collections of Jean Jules Linden from locations that are currently in Venezuela and Colombia, is proposed. We also provide the number and location of duplicates of the type material.
Acta Societatis Botanicorum Poloniae, 2011
The current and past taxonomic status of <em>Chloraeinae</em> is presented; concepts ... more The current and past taxonomic status of <em>Chloraeinae</em> is presented; concepts of subtribe origin are also discussed. Two genera are described as new to science: <em>Chileorchis</em> Szlach., gen. nov., <em>Correorchis</em> Szlach., gen. nov. and six new combinations at the species level are validated. Two other genera, <em>Bieneria</em> Rchb.f. and Ulantha Hook., are reinstated. Additionally, a key to genera of <em>Chloraeinae</em> is provided.
International Journal of Molecular Sciences
Guatemala is recognized for its diverse and rich flora and fauna. It is estimated that over 1200 ... more Guatemala is recognized for its diverse and rich flora and fauna. It is estimated that over 1200 orchid species, classified in 223 genera, are known to occur in this rather small, yet megadiverse country. While studying the diversity of this plant group in the department of Baja Verapaz, we found individuals that clearly belonged to the genus Schiedeella, but whose features did not fit any previously known species. At that time, nine terrestrial taxon representatives were known to occur in Guatemala. We conducted the morphological analysis in accordance with the standard procedures of classical taxonomy. For phylogenetic reconstruction, 59 sequences of the ITS region and 48 of the trnL-trnF marker were applied. The topology of trees was obtained based on the Bayesian inference. Schiedeella bajaverapacensis was described and illustrated based on morphological evidence, and its taxonomic position was confirmed by phylogenetic analyses. The new entity is the 10th Schiedeella representa...
PhytoKeys, 2022
Neotropical genus Maxillaria Ruiz & Pav. belongs to one of the most diverse and species-rich grou... more Neotropical genus Maxillaria Ruiz & Pav. belongs to one of the most diverse and species-rich groups of orchids. Several of its representatives are popular, horticultural plants with large and showy flowers, often nicely fragranced. It is not uncommon that some distinctly colored individuals are introduced to the commercial market under names of similar, more or less related species, as informal varieties or color forms, largely causing confusion. While investigating the diversity of Maxillaria in Ecuador, we have encountered plants that were commercially referred to as M. sanderiana xanthina. In the course of conducted morphological and micromorphological analyses, we concluded that it is a new, separate species and hereby, we describe it as M. anacatalinaportillae.
PeerJ, 2021
A taxonomic synopsis of the orchid genus Pterichis in Ecuador is presented. All national represen... more A taxonomic synopsis of the orchid genus Pterichis in Ecuador is presented. All national representatives of this genus are characterized and their floral segments are illustrated. Four new species and two new varieties are described. An updated key to Ecuadorian Pterichis is provided. Plants of the genus are growing mostly as terrestrial herbs at the altitude of 2,300–4,110 m. Often two or more species co-occur in the area of 25 × 25 km. Their occurrence was reported from three ecoregions—the Eastern Cordillera real montane forests, the Northern Andean páramo and the Northwestern Andean montane forests. Seven Ecuadorian Pterichis are endemic.
PeerJ, 2021
A taxonomic synopsis of the orchid genus Habenaria in New Guinea and adjacent islands is presente... more A taxonomic synopsis of the orchid genus Habenaria in New Guinea and adjacent islands is presented. We confirmed the occurrence of 27 Habenaria species in study area. Sixteen of these are endemic and were not so far found outside New Guinea. Morphological characteristics and illustrations of floral segments of taxa are presented. One new species of Habenaria is described. Four neotypes are selected. An updated key to species groups and species occurring in the study area is provided. The importance of diagnostic floral characters in Habenaria is discussed.
PeerJ, 2020
This article is a presentation of taxonomic diversity of the orchid genusCyrtochilumin Northweste... more This article is a presentation of taxonomic diversity of the orchid genusCyrtochilumin Northwestern South America. The morphological characteristics of over 90 species occurring in northern Peru, Ecuador, Colombia and Venezuela are presented together with illustrations of their floral segments. Information about the distribution of each taxon is provided. Ten morphologically consistent groups have been delineated to facilitate identification ofCyrtochilumrepresentatives in the studied area. Keys for determination of species within each group are provided. Seven new species ofCyrtochilumare described and one new combination is proposed.
TURKISH JOURNAL OF BOTANY, 2019
The genus Sauvetrea Szlach. (Orchidaceae) was segregated from Maxillaria sensu lato in 2007. It e... more The genus Sauvetrea Szlach. (Orchidaceae) was segregated from Maxillaria sensu lato in 2007. It embraces a group of from 10 to nearly 20 species, all initially defined as Maxillaria sect. Trigonae. Sauvetrea can be easily distinguished from closely related Rhetinantha M.A.Blanco by the lip callus. During the revision of the materials stored in AMES we came across specimens collected by Vargas in Peru, which were initially identified by Schweinfurth as Maxillaria brachypetala Schltr. We compared Vargas's discovery with the protologue of the latter species and other Sauvetrea, but it does not fit the description of any genus representatives known so far. We describe it below as a new species, Sauvetrea schweinfurthiana Szlach. & Lipińska.
Biodiversity Research and Conservation, 2018
The orchid genus Dipteranthus, described by Rodrigues in 1882, comprises about 10 species distrib... more The orchid genus Dipteranthus, described by Rodrigues in 1882, comprises about 10 species distributed from Venezuela to Bolivia and Brazil. Plants of Dipteranthus are small epiphytes, reaching in total up to 10 cm in length, hence, are easily overlooked in the field. Modern classification of Dipteranthus is still under discussion. During the revision of orchids of the Guianas, we came across some specimens that do not match morphological characters of any previously known Dipteranthus species. Thus, we propose that these specimens represent a new species – Dipteranthus clarkei sp. nov. D. clarkei is the first representative of the genus known from Guyana.
PeerJ, 2019
The geographical range of the orchid genus Cranichis extends from USA, Central America, and the C... more The geographical range of the orchid genus Cranichis extends from USA, Central America, and the Caribbean to Bolivia and Argentina—with the greatest diversity observed in the Andean region. This taxon embraces herbs with the scape and basal leaves developing from a single, terminal bud and having the scape enclosed in several sheaths. The small, non-resupinate, flowers are arranged in a racemose inflorescence. The petals and lip are free from the column part and their gynostemium is short and massive. In this paper, the synopsis of Cranichis in Colombia is presented. Each species occurring in the country is characterized and illustrated. The information about habitat and distribution of national genus representatives are provided. Several groups of species that are very similar in their morphology are delineated to facilitate process of species identification. A total of 10 species are described here as new. Lectotypes for the six species Cranichis ciliata, C. fendleri, C. mandonii,...
PeerJ, 2017
The first natural hybrid in the sectionIrapeanaof the orchid genusCypripediumis described and ill... more The first natural hybrid in the sectionIrapeanaof the orchid genusCypripediumis described and illustrated based on Guatemalan material. A molecular evaluation of the discovery is provided. Specimens with intermediate flowers betweenC. irapeanumandC. dickinsonianumwithin ITS andXdhsequences have the signal sequence of both these species. The analysis of plastid sequences indicated that the maternal line isC. irapeanum. Information about the ecology, embryology and conservation status of the novelty is given, together with a distribution map of its parental species,C. irapeanumandC. dickinsonianum. A discussion of the hybridization betweenCypripediumspecies is presented. The potential hybrid zones between the representatives ofCypripediumsectionIrapeanawhich were estimated based on the results of ecological niche modeling analysis are located in the Maya Highlands (C. dickinsonianumandC. irapeanum) and the eastern part of Southern Sierra Madre (C. molleandC. irapeanum). Moreover, all ...
PeerJ, 2019
The Neotropical orchid genusPonthievaR. Br. was established in 1813. The 70 representatives of th... more The Neotropical orchid genusPonthievaR. Br. was established in 1813. The 70 representatives of this taxon are terrestrial, lithophytic, or epiphytic plants with basal, sessile, or petiolate leaves which are glabrous or pubescent. Their erect peduncle is pubescent and terminated by lax, few- to many-flowered raceme. Flowers are non-resupinate, with dissimilar sepals and asymmetrical petals which are adnate to the sides of the gynostemium. The lip is uppermost, fused to the lower part of the gynostemium. Here the synopsis of ColombianPonthievais presented. A list of national genus representatives includes 26 species, including one new species,P. vallecaucanaSzlach. Kolan. & Olędrzyńska, sp. nov., discovered during this study. We did not confirm occurrence of four species reported in previous research. To facilitate process of identification of genus representatives, we dividedPonthievainto six morphological complexes based on vegetative and floral characters. The highest number of spe...
TURKISH JOURNAL OF BOTANY, 2018
Introduction The last 30 years were crucial for understanding the taxonomy and diversity of the o... more Introduction The last 30 years were crucial for understanding the taxonomy and diversity of the orchid subtribe Pleurothallidinae. At the end of the 18th century, less than 40 species representing this group were known, and most of them were classified in Epidendrum L. (today this genus is included in the subtribe Laeliinae).
Plant Systematics and Evolution, 2017
A phylogenetic study of Sobralia (Orchidaceae) confirmed the polyphyletic character of the genus.... more A phylogenetic study of Sobralia (Orchidaceae) confirmed the polyphyletic character of the genus. Sobralia also appears to be highly heteromorphic in the morphology, especially considering the position and architecture of inflorescence, lip form and kind of its outgrowths, length and form of stelidia of column. The infrageneric relationship of Sobralia species was revealed by analyses of three DNA markers (nuclear ITS, xdh and plastid matK). The nominal section of the genus appears to be more related with Elleanthus and other genera of Sobralieae than with the remaining species of Sobralia. Sobralia section Sobralia differs from other representatives of the genus by the position and architecture of inflorescence, smaller floral bracts and the morphology of the flowers. We propose a generic rank to the group despite its paraphyletic nature. Nomenclatural consequences of this proposal are briefly discussed. Appropriate transfers to the newly erected genus Brasolia are proposed. A new species, Brasolia floribunda, previously detected by Reichenbach, but never formally described, is validated. Lectotypes for five species and a neotype for the other one are proposed.
Plant Systematics and Evolution, 2015
Concepts of the generic delimitation in the Odontoglossum complex are revised. Comparative morpho... more Concepts of the generic delimitation in the Odontoglossum complex are revised. Comparative morphology of previously recognized genera: Cochlioda, Collare-stuartense, Odontoglossum, Solenidiopsis, and Symphyglossum is presented. Differences between those taxa are compared with the results of molecular studies. A new combination within Collare-stuartense is proposed. Keywords Collare-stuartense Á Neotropics Á Odontoglossum Á Symphyglossum Á Taxonomy the genus are currently comprised in other taxa, e.g., Rossioglossum (Schltr.) Garay & G.C.Kenn., Miltonioides Brieger & Lückel, and Rhynchostele Rchb.f. The most recent infrageneric classification of Odontoglossum was proposed by Bockemühl (1984, 1989) who accepted 58 species, which were embraced in six subgenera: nominal one, Serratolaminata, Lindleyana, Erectolobata, Nevadensia, and Unguisepala. Those taxa are distinguishable based on the form of lip-column adnation, shape of the lip base as well as anther and rostellum structure. Pfitzer (1887) included Odontoglossum together with inter alia (''among others'') (i.a.) Oncidium, Miltonia Lindl., Brassia R.Br., Solenidium Lindl., Sigmatostalix Rchb.f., and Gomesa R.Br. in the subtribe Odontoglosseae (orig. orth.), and in all subsequent classification systems the genus was placed within Oncidiinae (Dressler 1993; Szlachetko 1995; Chase et al. 2003). Chase et al. (2008) decided to merge Odontoglossum together with i.a. Symphyglossum Schltr., Cochlioda, Solenidiopsis Senghas, Collare-stuartense Senghas & Bockemühl, Chamaeleorchis Senghas & Lückel, Miltonioides, Mexicoa Garay, and Sigmatostalix under Oncidium. In the phylogenetic tree presented by Neubig et al. (2012), species of Oncidium sensu Chase et al. (2008) form several clades. The first one that includes Oncidium s.s. is grouped along with Miltonioides, Mexicoa, Vitekorchis Romowicz & Szlach. p.p., Chamaeleorchis, and Heteranthocidium Szlach., Mytnik & Romowicz. The second embraces representatives of Handling editor: Ricarda Riina.
Polish Botanical Journal, 2016
Scaphyglottis cobanensis Archila, Szlach. & S. Nowak (Orchidaceae, Epidendroideae) is described a... more Scaphyglottis cobanensis Archila, Szlach. & S. Nowak (Orchidaceae, Epidendroideae) is described and compared with the morphologically close species S. bifida (Rchb. f.) C. Schweinf. and S. lindeniana (A. Rich. & Galeotti) L. O. Williams. The new species is illustrated with SEM images of the labellum and gynostemium.
Polish Botanical Journal, 2015
Four new species of Heteranthocidium Szlach., Mytnik & Romowicz are described and illustrated. Ea... more Four new species of Heteranthocidium Szlach., Mytnik & Romowicz are described and illustrated. Each morphological description is complemented with data on the species' ecology and distribution. The taxonomic affinities of the novelties are briefly discussed.
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Papers by Dariusz Szlachetko