e-Flora of Thailand

Volume 3 > Part 3 > Year 1988 > Page 432–433 > Thelypteridaceae > Thelypteris

49. Thelypteris opulenta (Kaulf.) Fosbergwfo-0001109427

in Fosberg & Sachet, Smithsonian Contr. Bot. 8: 3. 1972.— Aspidium opulentum Kaulf., Enum. Filic.: 238. 1824.— Amphineuron opulentum (Kaulf.) Holttum, Blumea 19: 45. 1971; 23: 212. 1977; in Fl. Males., Ser. II, Pterid. 1: 548. f. 19 b–c. 1981.— Cyclosorus opulentus (Kaulf.) Nakaike, Enum. Pterid. Jap.: Filic.: 277. 1975.


Accepted Name : This is currently accepted.



Synonyms & Citations :

Aspidium extensum Blume, Enum Pl. Javae: 156. 1828; Christ, Bot. Tidsskr. 24: 10. 1901.— Nephrodium extensum (Blume) T.Moore, Index Fil.: 1. 1858; Bedd., Handb. Ferns Brit. India: 269. 1883; E.Smith. J. Siam Soc. Nat. Hist. Suppl. 8: 5. 1829.— Dryopteris extensa (Blume) Ching, Bull. Fan Mem. Inst. Biol. 8: 182. 1938; Holttum, Rev. Fl. Malaya 2: 264. f. 150. 1955; Dansk Bot. Ark. 23: 232. 1965.— Cyclosorus extensus (Blume) Ching, Bull. Fan Mem. Inst. Biol. 8: 182. 1938; Holttum, Rev. Fl. Malaya 2: 264. f. 150. 1955; Dansk Bot. Ark. 23: 232. 1965.— Thelypteris extensa (Blume) C.V.Morton, Amer. Fern J. 49: 113. 1959; Tagawa & K.Iwats., S.E. Asian Stud. 3(3): 80. 1965; 5: 69. 1967; Acta Phytotax. Geobot. 23: 53. 1968.


Description : Similar to the preceding species, differing in : rhizome short, ascending to erect; lateral pinnae fewer in number, broader, thinner in texture, more deeply lobed, ⅔ to ¾ towards costa; only one pair of basal veinlets or less uniting below the sinus forming more acute curve, often all veinlets free; sori not strictly confined to segments.


Thailand : NORTHERN: Lampang (Mae Toi), Tak (Lan Sang); NORTH-EASTERN: Nong Khai; CENTRAL: Saraburi (Muak Lek); SOUTH-EASTERN: Chon Buri (Si Racha), Rayong (Khao Chamao), Chanthaburi (Khao Soi Dao), Trat (Ko Chang); SOUTH-WESTERN: Uthai Thani (Khao Pradu), Kanchanaburi (Erawan NP, Sai Yok, Thung Kang Yang); PENINSULAR: Surat Thani (Ko Tao, Ban Don), Chumphon, Phangnga (Thap Put), Nakhon Si Thammarat (Khao Luang), Trang (Khao Chong), Satun, Narathiwat (Bacho Falls), Yala (Bannang Sata), Pattani (Ban Sai Khao).


Distribution : Sri Lanka to Malesia, Micronesia (type from Guam), Polynesia.


Ecology : On rather dry mountain slopes in light shade usually at low altitudes.


E-version notes : For more details see Ferns of Thailand, Laos and Cambodia.


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