Ferns of Thailand, Laos and Cambodia

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

Athyriaceae

Nomenclature

Diplazium conterminum Christ, J. Bot. 19: 67. 1905; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 258. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 105. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 462. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 191. 2000. – Allantodia contermina (Christ) Ching, Acta Phytotax. Sin. 9: 47. 1964. – Diplazium virescens var. conterminum (Christ) Sa.Kurata, J. Geobot. 7: 77. 1958.

Description

Rhizome creeping; scales dark brown, up to 15 by 1 mm, toothed. Stipes about 50 cm long. Frond subdeltoid, about 50 by 50 cm, bipinnate; lower pinnae with stalks up to 5 cm long, gradually narrowing towards acute apex, up to 30 by 13 cm; larger pinnules oblong-subdeltoid, acute at apex, cordate at base, shortly stalked, lobed halfway to costule, up to 8.5 by 1.8 cm; lobes orbicular, serrate, up to 7 mm broad; softly papyraceous, dark green, paler beneath; veins pinnate with 5–8 pairs of simple veinlets. Sori oblong, usually along posterior half of veinlets, thus submarginal, up to 2 mm long; indusia thin but firm, persistent .

Distribution in Thailand

NORTHERN: Phitsanulok; PENINSULAR: Nakhon Si Thammarat.

Wider Distribution

Vietnam, S China, Ryukyu, and SW Japan.

Ecology

On mountain slopes in dense forests at 900–1500 m alt.

Proposed IUCN Conservation Assessment

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

	Ferns of Thailand, Laos and Cambodia
Home \| Species Index \| Glossary
Diplazium conterminum Christ 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 Athyriaceae Nomenclature Diplazium conterminum Christ, J. Bot. 19: 67. 1905; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 258. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 105. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 462. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 191. 2000. – Allantodia contermina (Christ) Ching, Acta Phytotax. Sin. 9: 47. 1964. – Diplazium virescens var. conterminum (Christ) Sa.Kurata, J. Geobot. 7: 77. 1958. Description Rhizome creeping; scales dark brown, up to 15 by 1 mm, toothed. Stipes about 50 cm long. Frond subdeltoid, about 50 by 50 cm, bipinnate; lower pinnae with stalks up to 5 cm long, gradually narrowing towards acute apex, up to 30 by 13 cm; larger pinnules oblong-subdeltoid, acute at apex, cordate at base, shortly stalked, lobed halfway to costule, up to 8.5 by 1.8 cm; lobes orbicular, serrate, up to 7 mm broad; softly papyraceous, dark green, paler beneath; veins pinnate with 5–8 pairs of simple veinlets. Sori oblong, usually along posterior half of veinlets, thus submarginal, up to 2 mm long; indusia thin but firm, persistent . Distribution in Thailand NORTHERN: Phitsanulok; PENINSULAR: Nakhon Si Thammarat. Wider Distribution Vietnam, S China, Ryukyu, and SW Japan. Ecology On mountain slopes in dense forests at 900–1500 m alt. Proposed IUCN Conservation Assessment Least Concern (LC). This species is widespread 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
Site hosted by the Royal Botanic Garden Edinburgh. Content managed by Stuart Lindsay, Gardens by the Bay, Singapore and David Middleton, Singapore Botanic Gardens. Last updated 24 January 2012