Last revision 08-Feb-2018
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Dariusz L. Szlachetko, Marta Kolanowska and Marcin Górniak describe a new natural hybrid from Guatemala in PeerJ. It is the first natural hybrid in the section Irapeana of the genus Cypripedium.

Cyp. ×fred-mulleri Szlachetko, Kolanowska & Górniak


A new taxon of Paphiopedilum from Sumatra, Indonesia, is described twice. Destario Metusala describes it at the varietal level giving it the name Paph. barbatum var. acehense in Jurnal Pro-Life. William Cavestro and Olaf Gruß describe it as a new species in OrchideenJournal; Paph. rohmannii.

Paph. barbatum var. acehense Metusala
Paph. rohmanii Cavestro & Gruß

Sources: and

A new species of Paphiopedilum from Myanmar has been described by Harold Koopowitz, Prapanth Iamwiriyakul and Srisuda Laohapatcharin in Phytotaxa. They call it Paph. myanmaricum.

Paph. myanmaricum Koopowitz, Iamwiriyakul & Laohapatcharin


Guido J. Braem and Eliseo Tesón describe two new natural Phragmipedium hybrids. They named them Phrag. ×daguense and Phrag. ×narinense and published the descriptions in Schlechteriana.

Phrag. ×daguense Braem & Tesón
Phrag. ×narinense Tesón & Braem


01-Jul-2017 & 05-Jul-2017
A new Paphiopedilum species from Sulawesi is described by William Cavestro in The Internet Orchid Species Photo Encyclopedia Nomenclature Note: Paphiopedilum anitanum.

Paph. anitanum Cavestro


Paphiopedilum zulhermanianum is described by William Cavestro in The Internet Orchid Species Photo Encyclopedia Nomenclature Note.

Paph. zulhermanianum Cavestro


William Cavestro describes Paphiopedilum dodyanum in The Internet Orchid Species Photo Encyclopedia Nomenclature Note.

Paph. dodyanum Cavestro


A new species from China is described as Paphiopedilum notatisepalum by Meina Wang, Si-Ren Lan and Zhong-Jian Liu in Phytotaxa.

Paph. notatisepalum Z.J. Liu, M. Wang & S.R. Lan


A new Paphiopedilum species belonging to the section Barbata is descriped in The Internet Orchid Species Photo Encyclopedia Nomenclature Note by William Cavestro and Nicolas Bougourd. They named it Paphiopedilum agusii.

Paph. agusii Cavestro & Bougourd


Two new species of Paphiopedilum belonging to the section Barbata from Sumatra, Indonesia are descriped in the Edinburgh Journal of Botany by Destario Metusala. Their names, Paphiopedilum bungebelangi and Paphiopedilum lunatum.

Paph. bungebelangi Metusala
Paph. lunatum Metusala


Are you looking for the old PhragWeb website? Use the link in the top right corner of the screen to go there.

Welcome (back).

With this latest, mainly technical, update of the Slipperiana website comes something new. For every hybrid a pie chart is available that shows in percent the influence of the species that are in the hybrids ancestry. This chart can be found on the Ancestry tab of the data page.

Thank you for visiting.

Rob Zuiderwijk

Species' influence charts.

With the revision of this website that was uploaded on 08-Feb-2018 came a new feature. On the Ancestry tab of the data page of every hybrid, a pie chart has been added that shows the percentage of influence of the species involved in the creation of the hybrid.

Recent monographs of slipper orchid genera.

Slipper Orchids of the Tropical Americas.
Phillip Cribb & Christopher Purver
Published 2017 by Natural History Publication and Orchid Digest in association with Royal Botanic Gardens, Kew. (English)
The Genus Paphiopedilum. 2nd Edition.
Guido J. Braem, Guy Chiron & Sandra L. Öhlund
Published 2016 by Bishen Singh Mahendra Pal Singh. (English)
Lateinamerikanische Frauenschuhe.
Olaf Gruß
Published 2014 by Orchideenzauber-Verlag. (German)