{{Short description|Species of orchid}} {{Speciesbox | image = The Orchid Album-02-0078-0073-Vanda hookeriana.png | image_caption = Botanical illustration of ''Papilionanthe hookeriana'' as ''Vanda hookeriana'' by John Nugent Fitch | image2 = Frederick Sander - Reichenbachia II plate 74 (1890) - Vanda hookeriana.jpg | image2_caption = Illustration by Frederick Sander, published 1888-1894 | genus = Papilionanthe | species = hookeriana | authority = (Rchb.f.) Schltr. | synonyms = {{Plainlist | style = margin-left: 1em; text-indent: -1em; | *''Vanda hookeriana'' <small>Rchb.f.</small> *''Vanda hookeri'' <small>Anon.</small> }} | synonyms_ref = <ref>{{cite web |url=http://apps.kew.org/wcsp/synonomy.do?name_id=147343 |title=World Checklist of Selected Plant Families |accessdate=July 12, 2014}}</ref><ref name = "POWO" /> }}
'''''Papilionanthe hookeriana''''', also known as anggrek pensil in indonesian,<ref name = "FLORA DANAU">SUDAH, DENDAM TAK. [https://www.researchgate.net/profile/Rohidin-Mersyah/publication/349518739_FLORA_DANAU_DENDAM_TAK_SUDAH_DAN_SEKITARNYA_DI_KOTA_BENGKULU/links/6034774c92851c4ed58dfad9/FLORA-DANAU-DENDAM-TAK-SUDAH-DAN-SEKITARNYA-DI-KOTA-BENGKULU.pdf "FLORA DANAU."]</ref> or kinta weed,<ref>Dourado, F. M. (1979). Vanda hookeriana--the Kinta weed. Bulletin.</ref> is a species of orchid native to the swamps<ref name = "FLORA DANAU" /> of Borneo, Malaya, Sumatera, Thailand, and Vietnam.<ref name = "POWO">{{cite POWO |id=77177068-1 |title=''Papilionanthe hookeriana'' (Rchb.f.) Schltr. |accessdate=11 November 2022}}</ref>
== Description == The peduncle of the inflorescence is longer than the leaves of the plant.<ref name = "Herbarium specimen" />
== Distribution == The species is native to Vietnam, Malaysia, Indonesia and Thailand.<ref>[https://eol.org/pages/1135927/data Papilionanthe hookeriana (Rchb. fil.) Schltr. data], Encyclopedia of Life. Retrieved July 30, 2021.</ref>
== Habitat == This species is terrestrial or semi-aquatic, as opposed to many other orchid species that are epiphytic. It grows in full sun in swamps near sea level.<ref>Genera Orchidacearum Vol 6, Alec M. Pridgeon et al. (editor), First edition, 2014, Oxford University Press, p. 219 (PAPILIONANTHE).</ref> The plants should be flooded during the growing season.<ref name = "Herbarium specimen">{{Cite web|url=http://specimens.kew.org/herbarium/K000891400|title=HerbWeb - Details Page}}</ref> These freshwater swamp forests may grow along the edges of lakes. The soil can be very acidic, with pH values ranging between 4 and 5. <ref>Wiryono, W., Mersyah, R., & Tarantona, M. (2020). Flora of Danau Dusun Besar conservation forest in Bengkulu Province, Indonesia. Biodiversitas, 21.</ref>
== Conservation == These habitats are threatened from logging, fire and land conversion. <ref>Mary Rose C. Posa, Lahiru S. Wijedasa, Richard T. Corlett, Biodiversity and Conservation of Tropical Peat Swamp Forests, BioScience, Volume 61, Issue 1, January 2011, Pages 49–57, https://doi.org/10.1525/bio.2011.61.1.10</ref> Therefore, this species has been declining in Indonesia since the early 1990s. A program of the University of Riau made a restoration effort, re-planting artificially multiplied plants back into their intended habitat in 2007 and 2008. <ref>Roilan (2016). ANGGREK PENSIL (Papilionanthe hookerina) ASLI BENGKULU SEBAGAI SPESIES BARU.</ref> Further studies on micropropagation and acclimatisation of plantlets have been undertaken. <ref>Febriyani, Sustri & Ganefianti, Dwi & Romeida, Atra & Reny, Herawati. (2019). Acclimatization of Pencil Orchid (Papillionanthe hookeriana Rehb.f) as Affected by Different Types of Planting Media and Fertilizing Frequency. Akta Agrosia. 22. 36-41. 10.31186/aa.22.1.36-41. </ref><ref>Rahayu, Shilfiana & Setiti, Edy & Indraloka, Aldy Bahaduri. (2021). EFFECT OF YEAST EXTRACT AND PISANG RAJA ON EMBRYONAL SHOOT GROWTH OF Vanda hookeriana, Rchb.f. 10.15408/kauniyah.v14i1.16713. </ref>
== Use in hybridisation == It is the pollen parent of the hybrid ''Papilionanthe'' Miss Joaquim, which was originally hybridised by Agnes Joaquim.
==References== {{Reflist}}
{{Taxonbar|from=Q3362888}}
hookeriana Category:Flora of Vietnam Category:Flora of Peninsular Malaysia Category:Flora of Borneo Category:Flora of Sumatra Category:Flora of Thailand Category:Orchids of Malaysia Category:Orchids of Indonesia
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