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  • Author: Dariusz L. Szlachetko x
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Fredy L. Archila Morales and Dariusz L. Szlachetko

Abstract

A new species of the orchid genus Stelis Sw. - S. anagraciae Archila & Szlach. - from Guatemala is described and illustrated.

Open access

Dariusz L. Szlachetko, Magdalena Sitko, Piotr Tukałło and Joanna Mytnik-Ejsmont

Abstract

A new classification of the subtribe Maxillariinae (Orchidaceae) is proposed. Thirty-seven genera are revised. The Camaridium group is divided into seven genera, Adamanthus, Camaridium, Pseudomaxillaria, Psittacoglossum and three described here: Chaseopsis, Chelyella and Viracocha. Ornithidium s.l. is divided into seven genera: Heterotaxis, Laricorchis, Neo-urbania, Nitidobulbon, Ornithidium, Vazquezella and Aucellia, the latter two described here. 193 new combinations on the species level are validated and the relationships among the genera are briefly discussed. A key to the determination of all genera representing Maxillariinae s. s. is provided.

Open access

Dariusz L. Szlachetko, Piotr Tukałło, Joanna Mytnik-Ejsmont and Elżbieta Grochocka

Abstract

Results of molecular analysis compared with morphological studies were used for reclassification of the Angraecumalliance (Orchidaceae). For the purpose of this study we sequenced the ITS region (ITS1-5.8S-ITS2) of nrDNA representing nuclear genome and the plastid region trnL-F (including intron of trnL gene and trnL-trnF intergenic spacer). The ITS matrix includes 97 samples representing 86 species and the trnL-F matrix includes 94 samples representing 86 species. We focus mainly on the genus Angraecum, however the other genera of Angraecinae are also included (Aeranthes, Campylocentrum, Dendrophylax, Cryptopus, Calyptrochilum, Lemurorchis, Jumellea, Neobathiea, Oeonia, Oeoniella, Sobennikoffia). Additional 43 sequences, including an outgroup (Polystachya modesta) and other representatives of the subtribes Aeridinae (Aerides) and Aerangidinae (Aerangis, Angraecopsis, Erasanthe, Solenangis), were obtained from NCBI resources. Bayesian analysis using MrBayes 3.1.2 on the combined ITS/trnL-F matrix were performed. The monophyly of Angraecinae with an inclusion of Aerangidinae is highly supported by both methods (93 BP/100 PP). The Angraecoid taxa formed two well supported clades, namely clade I (89 BP/100 PP) and clade II (84 BP/100 PP). New classification based on both molecular and classical taxonomy studies is presented including a key to the genera. The subtribe Angraecinae includes 36 genera, 18 of them, included within Angraecum by different authors so far, are treated here. Five new genera are described: Eichlerangraecum, Hermansia, Lesliegraecum, Pectianriella and Rudolfangraecum. Ten sections of Angraecum are raised to the generic status.

Open access

Dariusz L. Szlachetko, Przemysław Baranow and Joanna Mytnik-Ejsmont

Abstract

In Colombia, four species of Triphora (Orchidaceae) are recognized. Two species (Triphora galeanoi and T. vichadaensis) are newly described. As circumscribed here, the two new species occur exclusively in Colombia apart from T. foldatsii, being known from Colombia and Venezuela, and T. gentianoides, ranging from the USA (Florida) in the north to Colombia in the south. For the species treated, a taxonomic description, synonymy and information about distribution are provided. Additionally,for the two new species, illustrations of flower parts are provided. A key for the determination of the Colombian species of Triphora is included.

Open access

Fredy L. Archila Morales and Dariusz L. Szlachetko

Abstract

Two new species of Guatemalan Cyclopogoninae are described and illustrated; one of them represents the Mesoamerican genus Potosia (Schltr.) R. Gonzalez & Szlach. ex Mytnik, the other - Neotropical Pelexia Poit. ex Rich. They are compared with other Guatemalan members of the genera.

Open access

Dariusz L. Szlachetko and Marta Kolanowska

Abstract

Two new species of Neotropical Orchidaceae, Epistephium epiphyticum Szlach. & Kolan. and E. cardonae Szlach. & Kolan., are described and illustrated based on Colombian material. So far the new entities are known exclusively from the type locations. Both species are placed within a key to Colombian Epistephium Kunth.

Open access

Dariusz L. Szlachetko, Marta Kolanowska and Katarzyna Mystkowska

Abstract

A synopsis of the genus Orchidotypus Kraenzl. in Colombia is presented. Morphological descriptions of all national representatives of the genus are provided, together with information about their habitat, ecology and general distribution, detailed illustrations of the studied plants, and an identification key for Colombian Orchidotypus species. A new species discovered during these studies is described and a new generic combination is proposed.

Open access

Dariusz L. Szlachetko and Marta Kolanowska

Abstract

Cyclopogon antioquiensis Szlach. & Kolan., a new species from Colombia, is described and illustrated. The differences between C. antioquiensis and similar species are briefly discussed and a key to the species of Cyclopogon subg. Cyclopogon is given. Information about the ecology and distribution of the new species is provided.

Open access

Marta Kolanowska and Dariusz L. Szlachetko

Abstract

Duckeella humboldtii, a new species from Colombia, is described, illustrated and placed within the key for determination of Duckeella Porto & Brade representatives. The comparative morphology of all known species of the genus is presented.

Open access

Dariusz L. Szlachetko and Marta Kolanowska

Abstract

Five new species of Caucaea Schltr. (C. caucana Szlach. & Kolan., C. pichinchae Szlach. & Kolan., C. dodsoniana Szlach. & Kolan., C. pseudoandigena Szlach. & Kolan., C. duquei Szlach. & Kolan.) are described and illustrated. The taxonomic affinities of the new entities are discussed, and information about their habitat and ecology is provided. A key for identification of Caucaea species known from Colombia and Ecuador is provided.