Natalia Olędrzyńska

University of Gdansk | UG · Department of Evolutionary Genetics and Biosystematics

Encyclia is the second-largest genus in the neotropical subtribe Laeliinae (Orchidaceae) and has more than 150 species, which are characterized by fairly consistent flower morphology. Its taxonomy and species boundaries, however, seem to be still under debate. In the present study, we first examined the lip micromorphology of 61 species of Encyclia...

To solve the taxonomic affiliation of Bulbophyllum physometrum, the only known species of the Bulbophyllym sect. Physometra (Orchidaceae, Epidendroideae), we conducted phylogenetic analyses based on nuclear markers, i.e., ITS and the low-copy gene Xdh, and the plastid region matK. We used Asian Bulbophyllum taxa, with a special focus on species fro...

The neotropical orchid genus Telipogon Kunth was established in 1815 and currently comprises more than 250 species. Representatives of this genus are generally epiphytic plants lacking pseudobulbs. The stem is either abbreviated or elongate and the leaves are conduplicate. Flowers are usually resupinate with small sepals and petals similar to the l...

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 sim...

The phylogeny of the genus Paphiopedilum based on the plastome is consistent with morphological analysis. However, to date, none of the analyzed nuclear markers has confirmed this. Topology incongruence among the trees of different nuclear markers concerns entire sections of the subgenus Paphiopedilum. The low-copy nuclear protein-coding gene PHYC...

The aim of this paper is to present materials towards the taxonomic revision of Brachycorythis -complex (Orchidinae, Orchidaceae), which constitutes seven terrestrial genera and forty-eight species distributed in sub-Saharan Africa, Madagascar and SW Asia. The detailed morphological descriptions, together with distribution data and ecological prefe...

The genus Rhetinantha M.A. Blanco was segregated from Maxillaria s.l. in 2007. It embraces about 20 species formerly classified in M. acuminata alliance, section Digammae Christenson and its distribution ranges from Mexico to Bolivia and Brazil. Representatives of Rhetinantha are subcaespitose to long rhizomatous with often ridged pseudobulbs. One...

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...

Szlachetko D. L., Olędrzyńska N. & Lipińska M. M. 2019. Three new species of the genus Rhetinantha (Orchidaceae) from Colombia and Peru. – Phyton (Horn, Austria) 59 (1–2): 49–53, with 7 figures.* The genus Rhetinantha has been segregated from Maxillaria sensu lato in 2007 by Blanco & al. It embraces about 20 species formerly classified in the M. ac...

The Neotropical orchid genus Ponthieva R. 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...

The aim of the paper is to present materials to the taxonomic revision of the African orchid genus Bilabrella Lindl., based on herbarium materials, specimens conserved in FAA as well as literature. It was compiled using classical taxonomic methods. The research involved determining differences between Bilabrella and other genera of Habenariinae in...

A new species from Madagascar, Lesliegraecum elzbietae Mytnik,Szlach. & Olędrz. (Orchidaceae, Angraecinae) is described and illustrated. Morphological description is complemented with data of the species ecology and distribution. The taxonomic affinities of the new taxon are discussed and key to determination of all Lesliegraecum representatives is...

Disperis tomaszii (Orchidaceae, Orchidoideae) from Cameroon is described and illustrated in this study. The new species is morphologically similar to Disperis nitida and Disperis thomensis. Phylogenetic analyses of selected DNA regions (ITS, matK) indicate a possible relationship between the new species and Disperis anthoceros and Disperis diceroch...

Vietorchis AVER. & AVERYANOVA is regarded as congeneric with Silvorchis J. J. SMITH. It belongs to Orchidaceae-Orchidoideae-Orchideae-Orchidinae. The new combination Silvorchis furcata (AVER. & NURALIEV) OLEDRZ. & SZLACH. is presented here. Vietorchidinae are reduced to a synonym of Orchidinae.

The generic delimitation of Scelochilus KLOTZSCH (Orchidaceae-Epidendroideae-Oncidieae-Comparettinae) is discussed and a narrow genus concept is chosen. Eight new species of Scelochilus are described and illustrated, seven from Ecuador and one from Bolivia, namely: S. bicornutus SZLACH., KOLAN. & OLEDRZ. (with indistinctly separated lip hypochile a...

Two new species of Psilochilus Barb. Rodr. (Orchidaceae-Vanilloideae-Tri-phorinae), namely P. minutifolius Kolan. from Panama and P. steyermarkii Kolan. from Venezuela are described and illustrated. The taxonomic affinities of the new species are discussed.

Pterichis macbridei Kolan. and P. cajamarcae Kolan. (Orchidaceae) are described and illustrated as new species based on Peruvian material. Their taxonomic affinities are discussed and information on their habitat ecology is provided. Pterichis diuris is reported for the first time from Peru and the name is lectotypified. An updated identification k...

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.

A new species of the Neotropical orchid genus Neokoehleria is described and illustrated based on Ecuadorian material. It appears to be similar to N. equitans Schltr. and N kerspei Senghas, but it can easily be distinguished by its petals which are shorter than the dorsal sepal, elongated lip spurs and the lip's epichile which is longer than the hyp...

Pachyphyllum putumayoensis Szlach., Kolan. & N. Oledrzynska sp. nova and P. longi-pedicellatum Szlach., Kolan. & N. Oledrzynska sp. nova (Orchidaceae) are described and illustrated based on Colombian material. They were found growing sympatrically in paramo de San Antonio del Bordoncillo. Their taxonomic affinities are briefly discussed.

Three new orchid species — Oliveriana puracensis Szlach., Kolan. & Olędrzyńska, O. pseudoegregia Szlach., Kolan. & Olędrzyńska, and O. guarinae Szlach., Kolan. & Olędrzyńska — are described and illustrated based on Colombian material. An identification key to Oliveriana species is provided. Taxonomic affinities of the new species are discussed and...