Phalaenopsis × gersenii is a species of orchid native to Borneo and Sumatra. It is a natural hybrid of Phalaenopsis violacea and Phalaenopsis sumatrana.Phalaenopsis × gersenii (Teijsm. & Binn.) Rolfe. (n.d.). World Checklist of Selected Plant Families | Royal Botanic Gardens, Kew. Retrieved April 30, 2022, from http://wcsp.science.kew.org/namedetail.do?name_id=151210 It is named after Gerrit Jan Gersen (1826-1877).Christenson, Eric A. (2001). Phalaenopsis : a monograph. Portland, Oregon: Timber Press. p. 124-125. ISBN 1604691719. He was a Dutch official, who was deployed to the Dutch East Indies, where he also was active as a plant collector of the Malesian region.GersenGJ. (n.d.). Nationaal Herbarium Nederland. Retrieved March 17, 2022, from https://www.nationaalherbarium.nl/FMCollectors//G/GersenGJ.htmGersen, G.J. (1826–1877). JSTOR Global Plants. Retrieved March 17, 2022.Netherlands. States-General. Bijlagen van het verslag der handelingen (Appendices to the report of actions.). 1877/78:pt.1. page 100-1
Taxonomy Phalaenopsis × singuliflora has been viewed as a synonym of Phalaenopsis × gersenii.Christenson, Eric A. (2001). Phalaenopsis : a monograph. Portland, Oregon: Timber Press. p. 159. ISBN 1604691719. The other natural hybrid however involves Phalaenopsis bellina instead of Phalaenopsis violacea.Phalaenopsis × singuliflora J.J.Sm. (n.d.). World Checklist of Selected Plant Families | Royal Botanic Gardens, Kew. Retrieved April 30, 2022, from http://wcsp.science.kew.org/namedetail.do?name_id=151297
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