Phylogenetic placement and taxonomy of the genus Hederorkis (Orchidaceae)
Joanna Mytnik-Ejsmont , Dariusz Lucjan Szlachetko , Przemysław Baranow , Kevin Jolliffe , Marcin Górniak
AbstractThree plastid regions, matK, rpl32-trnL and rpl16 intron and the ITS1-5.8S-ITS2 nuclear ribosomal DNA were used to demonstrate a phylogenetic placement of the genus Hederorkis (Orchidaceae) for the first time. The taxonomic position of this genus has been unclear thus far. The phylogenetic and morphological relations of Hederorkis to the most closely related genera Sirhookera, Adrorhizon, Bromheadia and Polystachya are also discussed. A hypothesis concerning an origin and evolution of Hederorkis is proposed. Hederorkis is an epiphytic two-leaved orchid genus with lateral inflorescence, non-resupinate flowers, elongate gynostemium and rudimentary column foot. It is native to the Indian Ocean Islands. Two species of Hederorkis are recognized worldwide, H. scandens endemic to Mauritius and Réunion and H. seychellensis endemic to Seychelles. For each of the species treated a full synonymy, detailed description and illustration are included. The distribution map and dichotomous keys to the species have also been provided.
|Journal series||Plos One, ISSN 1932-6203, (A 40 pkt)|
|Publication size in sheets||0.30|
|Keywords in English||Orchidaceae, Hederorkis, phylogeny, plastid and nuclear sequences, taxonomy, taxonomic revision, endemic|
|ASJC Classification||; ;|
|License||Journal (articles only); published final; ; with publication|
|Score|| = 40.0, 03-01-2020, ArticleFromJournal|
= 40.0, 03-01-2020, ArticleFromJournal
|Publication indicators||= 2.000; : 2015 = 1.136; : 2015 = 3.057 (2) - 2015=3.535 (5)|
|Citation count*||4 (2020-07-13)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.