Peristylus

Peristylus, sometimes commonly known as ogre orchids or bog orchids is a genus of flowering plants from the orchid family, Orchidaceae. It consists of over 100 known species found across much of eastern and southern Asia as well as in Australia and on many islands of the Indian and Pacific Oceans.

Description Orchids in the genus Peristylis are terrestrial, perennial, deciduous, sympodial herbs with paired fleshy tubers and thread-like, unbranched roots. The stems are upright and unbranched. The leaves are arranged in a rosette at the base of the plants or near the centre of the stem. The flowers are resupinate, usually small, often crowded, white, green or yellowish and usually only last a few days. The dorsal sepal and petals overlap to form a hood over the column. The labellum has a spur and usually three lobes which may be short or long and threadlike. The distinguishing feature of the genus is the presence of two club-shaped projections on the stigma. In many respects, plants in this genus are similar to those in Habenaria, only differing in the structure of the column.

Taxonomy and naming The genus Peristylus was first formally described in 1825 by Carl Ludwig Blume and the description was published in Bijdragen tot de flora van Nederlandsch Indië . The name Peristylus is derived from the Greek words peri meaning 'around', and stylos 'column', referring to the arms on each side of the column.

Distribution Orchids in the genus Peristylus are found in Japan, China, Mongolia, India, Indochina, Indonesia, Philippines, Malaysia, New Guinea, Polynesia and Australia.Kew World Checklist of Selected Plant FamiliesPridgeon, A.M., Cribb, P.J., Chase, M.C. & Rasmussen, F.N. (2001). Orchidoideae (Part 1). Genera Orchidacearum 2: 1-416. Oxford University Press, New York, Oxford.Flora of China v 25 p 137, 阔蕊兰属 kuo rui lan shu, Peristylus Blume, Bijdr. 404. 1825. Seidenfaden, G. 1977. Peristylus Bl. Dansk Botanisk Arkiv 31: 27.

Species , the World Checklist of Selected Plant Families accepted the following species:

Peristylus affinis (D.Don) Seidenf. – Himalaya to S. China and Indo-China Peristylus aliformis (C.Schweinf.) Renz & Vodonaivalu – Fiji Peristylus alpinipaludosus (P.Royen) Schuit. & de Vogel – W. New Guinea Peristylus aristatus Lindl. – Indian Subcontinent to Myanmar Peristylus balaenolabium Ormerod – Sumatera Peristylus balakrishnanii Karthig., Sumathi & Jayanthi – S. Andaman Islands Peristylus banfieldii (F.M.Bailey) Lavarack – N. & N.E. Queensland Peristylus biermannianus (King & Pantl.) X.H.Jin – Central & E. Himalaya Peristylus bismarckiensis (Schltr.) P.F.Hunt – Papua New Guinea Peristylus brachyphyllus A.Rich. – S. India Peristylus brassii Ormerod – W. New Guinea Peristylus brevicalcar Carr – Borneo (Gunung Kinabalu) Peristylus brevilobus Thwaites – Sri Lanka Peristylus calcaratus (Rolfe) S.Y.Hu – E. Nepal, S. China to Vietnam, Taiwan Peristylus carnosipetalus Kurzweil – N. Thailand Peristylus carolinensis (Schltr.) Tuyama – Caroline Islands Peristylus chapaensis (Gagnep.) Seidenf. – N. Vietnam Peristylus chlorandrellus D.L.Jones & M.A.Clem. – Queensland Peristylus ciliatus Carr – Borneo (Gunung Kinabalu) Peristylus ciliolatus J.J.Sm. – New Guinea Peristylus citrinus (Thouars) Lindl. – Mascarenes Peristylus commersonianus Lindl. – Réunion Peristylus constrictus (Lindl.) Lindl. – Indian Subcontinent to Indo-China Peristylus cryptostylus (Rchb.f.) Ormerod – Society Islands Peristylus cubitalis (L.) Kraenzl. – India to Myanmar Peristylus cymbochilus Renz – Papua New Guinea Peristylus densus (Lindl.) Santapau & Kapadia – Indian Subcontinent to S. China, S. Korea, S. Central & S. Japan to Nansei-shoto Peristylus djampangensis J.J.Sm. – Jawa Peristylus elbertii J.J.Sm. – Lesser Sunda Islands Peristylus flexuosus (Thouars) S.Moore – Mascarenes Peristylus formosanus (Schltr.) T.P.Lin – Central Nansei-shoto to Taiwan Peristylus gardneri (Hook.f.) Kraenzl. – Sri Lanka Peristylus goodyeroides (D.Don) Lindl. – Tropical & Subtrop. Asia Peristylus gracilis Blume – Assam to Taiwan (Lan Yü) and Malesia Peristylus grandis Blume – Thailand (Ko Tarutao) to New Guinea Peristylus hallieri J.J.Sm. – Borneo Peristylus hamiltonianus (Lindl.) Lindl. – Central & E. Himalaya to Thailand Peristylus hatusimanus T.Hashim. – Japan (Kyushu) Peristylus holochila (Hillebr.) N.Hallé – Hawaiian Islands Peristylus holttumianus Seidenf. ex Aver. – S. Vietnam Peristylus holttumii Seidenf. – S. Indo-China to Peninsula Malaysia Peristylus hylophiloides Ormerod – Philippines Peristylus intrudens (Ames) Ormerod – Central Nepal, Indo-China, China (Hong Kong), C. Taiwan, Philippines (Luzon) Peristylus iyoensis Ohwi – E. Nepal, N. Thailand, S. Korea, S. Central & S. Japan, Central & S. Taiwan Peristylus jinchuanicus K.Y.Lang – China (W. Sichuan, N.W. Yunnan) Peristylus kerrii Seidenf. – N. Thailand Peristylus kinabaluensis Carr – Borneo (Gunung Kinabalu) Peristylus korinchensis Ridl. – Sumatera Peristylus kumaonensis Renz – W. Himalaya Peristylus lacertifer (Lindl.) J.J.Sm. – Central Himalaya to S. Japan and W. Malesia Peristylus lancifolius A.Rich. – S. India Peristylus latilobus J.J.Sm. – E. Jawa Peristylus lawii Wight – Himalaya to India Peristylus listeroides (Schltr.) P.F.Hunt – New Guinea Peristylus lombokensis J.J.Sm. – Lesser Sunda Islands Peristylus macer (Schltr.) P.F.Hunt – New Guinea Peristylus maculifer (C.Schweinf.) Renz & Vodonaivalu – Vanuatu, Fiji (Vanua Levu) Peristylus maingayi (King & Pantl.) J.J.Wood & Ormerod – S. Indo-China to N. Queensland Peristylus minimiflorus (Kraenzl.) N.Hallé – New Caledonia (Î. des Pins), Futuna, Cook Islands Peristylus minimus Kurzweil & Tripetch – Thailand Peristylus monticola (Ridl.) Seidenf. – Andaman Islands, Malesia to New Guinea Peristylus mucronatus J.J.Sm. – Maluku (Seram) Peristylus nanus (Schltr.) P.F.Hunt – New Guinea Peristylus norumbus Ormerod – Papua New Guinea Peristylus novoebudarum F.Muell. – S.W. Pacific Peristylus nymanianus Kraenzl. – New Guinea Peristylus ovariophorus (Schltr.) Carr – Borneo (Sarawak) Peristylus pachyneuroides Renz – Papua New Guinea Peristylus pachyneurus (Schltr.) P.F.Hunt – New Guinea Peristylus palawensis (Tuyama) Tuyama – Caroline Islands Peristylus parishii Rchb.f. – Indian Subcontinent to S. China and Indo-China Peristylus phuwuanensis Kurzweil – N.E. Thailand Peristylus plantagineus (Lindl.) Lindl. – India, Sri Lanka Peristylus ponerostachys (Rchb.f.) Ormerod – Philippines (Leyte, Mindanao) Peristylus prainii (Hook.f.) Kraenzl. – Central Himalaya to Indo-China Peristylus pseudophrys (King & Pantl.) Kraenzl. – Sikkim (Chungthang) Peristylus reticulatus (Ames) Ormerod – Philippines (Luzon: Mt. Pulogloko) Peristylus richardianus Wight – E. Nepal, S. India Peristylus rigidus Kurzweil – N. Thailand Peristylus rindjaniensis J.J.Sm. – Lesser Sunda Islands Peristylus sahanii Kumar, G.S.Rawat & Jalal – N.E. India Peristylus secundus (Lindl.) Rathakr. – S. India Peristylus setifer Tuyama – Caroline Islands Peristylus silvicola (Schltr.) P.F.Hunt – New Guinea Peristylus societatis (Drake) N.Hallé – Society Islands Peristylus spathulatus J.J.Sm. – Borneo Peristylus spiralis A.Rich. – S.W. India, Sri Lanka Peristylus staminodiatus J.J.Sm. – Sulawesi Peristylus stenodon (Rchb.f.) Kores – Vanuatu Peristylus stocksii (Hook.f.) Kraenzl. – W. India Peristylus subaphyllus (Gagnep.) Seidenf. – Cambodia Peristylus tentaculatus (Lindl.) J.J.Sm. – S. China to Hainan Peristylus tenuicallus Ormerod – Vietnam Peristylus timorensis (Ridl.) J.J.Wood & Ormerod – Lesser Sunda Islands Peristylus tipulifer (C.S.P.Parish & Rchb.f.) Mukerjee – India (Kerala), Central Himalaya to China (Yunnan) and Indo-China Peristylus tobensis J.J.Sm. – N. Sumatera Peristylus tradescantiifolius (Rchb.f.) Kores – Maluku to S.W. Pacific Peristylus triaena (Schltr.) P.F.Hunt – New Guinea to Solomon Islands Peristylus tricallosus J.J.Sm. – Sulawesi Peristylus trimenii (Hook.f.) Abeyw. – Sri Lanka Peristylus umbonatus (Schltr.) P.F.Hunt – New Guinea Peristylus unguiculatus J.J.Sm. – Borneo Peristylus wheatleyi P.J.Cribb & B.A.Lewis – Vanuatu Peristylus whistleri P.J.Cribb – Samoa

Peristylus

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