Ferns of Thailand, Laos and Cambodia

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Family

Tectariaceae

Nomenclature

Tectaria fissa (Kunze) Holttum, Fl. Males., Ser. II, Pterid. 2: 87. 1991. – Aspidium fissum Kunze, Bot. Zeitung 6: 258. 1848. – Type: Lectotype (selected by Holttum, Flora Malesiana 1991), Zollinger 2369, Java (L accession number 908,302-348 & 349; iso BM).

Leptochilus rumicifolius Ridl., J. Malayan Branch Roy. Asiat. Soc. 4: 116. 1926. – Tectaria rumicifolia (Ridl.) C.Chr., Index Filic. Suppl. 3: 184. 1934; Holttum, Rev. Fl. Malaya.2: 519. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 23: 241. 1965; Tagawa & K.Iwats., Fl. Thailand 3: 380. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 216. 2000.

Tectaria polymorpha var. cuneifolia Bonap., Notes Ptérid. 14: 50. 1923; Holttum, Rev. Fl. Malaya ed. 1, 2: 518, f. 304. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 56. 1968.

Description

Description adapted from Holttum, Fl. Males., Ser. II, Pterid. 2: 87. 1991.
Rhizome short, suberect. Stipes to 70 cm long, castaneous, glabrescent; basal scales to 15 x 2 mm, firm, glossy, twisted distally, fringed when young. Laminae to 100 cm long, 1–5 pairs of pinnae and a pinna-like apex which may be joined to the uppermost pinnae; pinnae to 25 x 6 cm, entire with narrowly cuneate base and caudate-acuminate apex; basal pinnae with stalk 2–3 cm long and a basiscopic lobe which may be more than 20 cm long; main veins 6–10 mm apart along costae and at a broad angle to them, distally upcurved; cross veins rather regular, between them 2 irregular rows of areoles with included veinlets; lower surface of costa and main veins variably minutely hairy, upper surface usually quite glabrous. Sori mostly on veins surrounding areoles, in a row on each side of a cross vein, usually 4–6 in a row in the middle of a large pinna; indusia reniform, firm, persistent .

Distribution in Thailand

PENINSULAR: Yala.

Wider Distribution

Peninsular Malaysia, Sumatra, Java, Borneo.

Ecology

Evergreen forest.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is widespread outside of Thailand and not under any known threat.

	Ferns of Thailand, Laos and Cambodia
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Tectaria fissa (Kunze) Holttum Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17 Family Tectariaceae Nomenclature Tectaria fissa (Kunze) Holttum, Fl. Males., Ser. II, Pterid. 2: 87. 1991. – Aspidium fissum Kunze, Bot. Zeitung 6: 258. 1848. – Type: Lectotype (selected by Holttum, Flora Malesiana 1991), Zollinger 2369, Java (L accession number 908,302-348 & 349; iso BM). Leptochilus rumicifolius Ridl., J. Malayan Branch Roy. Asiat. Soc. 4: 116. 1926. – Tectaria rumicifolia (Ridl.) C.Chr., Index Filic. Suppl. 3: 184. 1934; Holttum, Rev. Fl. Malaya.2: 519. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 23: 241. 1965; Tagawa & K.Iwats., Fl. Thailand 3: 380. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 216. 2000. Tectaria polymorpha var. cuneifolia Bonap., Notes Ptérid. 14: 50. 1923; Holttum, Rev. Fl. Malaya ed. 1, 2: 518, f. 304. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 56. 1968. Description Description adapted from Holttum, Fl. Males., Ser. II, Pterid. 2: 87. 1991. Rhizome short, suberect. Stipes to 70 cm long, castaneous, glabrescent; basal scales to 15 x 2 mm, firm, glossy, twisted distally, fringed when young. Laminae to 100 cm long, 1–5 pairs of pinnae and a pinna-like apex which may be joined to the uppermost pinnae; pinnae to 25 x 6 cm, entire with narrowly cuneate base and caudate-acuminate apex; basal pinnae with stalk 2–3 cm long and a basiscopic lobe which may be more than 20 cm long; main veins 6–10 mm apart along costae and at a broad angle to them, distally upcurved; cross veins rather regular, between them 2 irregular rows of areoles with included veinlets; lower surface of costa and main veins variably minutely hairy, upper surface usually quite glabrous. Sori mostly on veins surrounding areoles, in a row on each side of a cross vein, usually 4–6 in a row in the middle of a large pinna; indusia reniform, firm, persistent . Distribution in Thailand PENINSULAR: Yala. Wider Distribution Peninsular Malaysia, Sumatra, Java, Borneo. Ecology Evergreen forest. Proposed IUCN Conservation Assessment Least Concern (LC). This species is widespread outside of Thailand and not under any known threat. Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17
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