e-Flora of Thailand

Volume 3 > Part 3 > Year 1988 > Page 378–379 > Dryopteridaceae > Tectaria

18. Tectaria polymorpha (Wall. ex Hook.) Copel.wfo-0001123568

Philipp. J. Sci. 2C: 413. 1907; C.Chr., Contr. U.S. Natl. Herb. 26: 330. 1931; Ching, Sinensia 2: 30. 1931; Tardieu & C.Chr. in Fl. Indo-Chine 7(2): 417. 1941, p.p.; Holltum, Dansk Bot. Ark. 20: 31. 1961; 23: 240. 1965; Tagawa & K.Iwats., S.E. Asian Stud. 5: 99. 1967; Acta phytotax. Geobot. 23: 56. 1968.— Aspidium polymorphum Wall. ex Hook., Sp. Fil. 4: 54. 1862; Bedd., Handb. Ferns Brit. India: 218. 1883.


Accepted Name : This is currently accepted.


Description : Rhizome short, ascending to suberect; scales linear-subtriangular, about 10 by 2 mm, brown, stiff, margined with pale thinner edges about 0.3 mm broad. Stipe stramineous to brown, densely pubescent on adaxial surface, glabrescent beneath, 30–80 cm long. Lamina imparipinnate, ovate-oblong, 30–60 by 30–50 cm; rachis densely pubescent on upper surface, glabrescent beneath; lateral pinnae oblong-lanceolate, caudate at apex, cuneate to rounded at base, shortly stalked or sessile, broadest at ⅓ way from apex; usually about 20 by 5 cm, or up to 30 by 10 cm, subentire, or rarely coarsely dentate, or each basal pinna sometimes with single large basiscopic lobe, terminal pinna a little larger, broadest at ⅔ way from apex, up to 20 by 6–10 cm, papyraceous, green, glabrous; costa and main veins distinctly raised beneath, shortly pubescent, veins copiously anastomosing, main areoles distinct including two rows of smaller areoles with free included veinlets, all veinlets raised beneath, glabrous. Sori on cross veins or sometimes on included free veins, irregularly scattered on lower surface of pinnae, round, about 1 mm diam.; indusia small, fugacious, pubescent.


Thailand : NORTHERN: Chiang Rai (Mae Suai, Mae Kok, Doi Phacho), Chiang Mai (Doi Chong, Tha Ton, Khun Khong Sang, Doi Chiang Dao, Mae Son to Huai Sai), Tak (Ban Na, Ban Musoe), Phitsanulok (Thung Salaeng Luang), Nakhon Sawan (Pa Ma Kham Pom); NORTH-EASTERN: Loei (Phu Luang, Sam Phai, Phu Kradueng); CENTRAL: Nakhon Nayok (Khao Yai), Saraburi (Muak Lek); SOUTH-EASTERN: Chanthaburi (Khao Soi Dao, Khao Sabap, Takha Mao Falls); SOUTH-WESTERN: Kanchanaburi (Song Tho); PENINSULAR: Chumphon (Khao Tong), Surat Thani (Ban Don), Nakhon Si Thammarat (Chawang), Trang (Khao Chong), Yala (Bannang Sata).


Distribution : E Himalaya (type) to S China and Taiwan, south to Sri Lanka and W Malaysia.


Ecology : On mountain slopes usually in dry places in dense forests at low to medium altitudes up to 1,400 m.


Vernacular : Kut kaeo (กูดแก้ว), kut taem (กูดแต้ม), kut kai (กูดไก่), kut hua lek (กูดหัวเหล็ก)(Northern); kut hok (กูดหก)(Shan-Northern); seng-khia-du (เซ็งเขี่ยดู่)(Karen-Northern).


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


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