Ferns of Thailand, Laos and Cambodia > Hymenophyllum pallidum

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

Hymenophyllaceae

Nomenclature

Hymenophyllum pallidum (Blume) Ebihara & K.Iwats., Blumea 51(2): 232. 2006. – Trichomanes pallidum Blume, Enum. Pl. Javae: 225. 1828; Bedd., Handb. Ferns Brit. India: 41. 1883; Copel., Philipp. J. Sci. 51: 141 1933; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 67. 1939; Holttum, Rev. Fl. Malaya ed. 1, 2: 97. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 20: 17.1961. – Pleuromanes pallidum (Blume) C.Presl, Epimel. Bot.: 258. 1851 [‘1849’]; Copel., Philipp. J. Sci. 67: 56. 1938; Ching, Fl. Reipubl. Popularis Sin. 2: 172, pl. 14, f. 5–8. 1959; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 41. 1967; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 52. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 86. 1979. – Crepidomanes pallidum (Blume) K.Iwats., Acta Phytotax. Geobot. 35: 174. 1984; Tagawa & K.Iwats., Fl. Thailand 3: 613. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 71. 2000; Newman et al., Checkl. Vasc. Pl. Lao PDR: 27. 2007.

Description

Rhizome wiry, about 0.3 mm diam., covered with light brownish hairs. Stipes dark stramineous, hairy at the base, 1.5–4 cm long, without wings. Laminae bipinnate to subtripinnatifid, oblong to somewhat irregular in outline, about 5 cm long, 1.5 cm wide, somewhat variable in size; pinnae oblong to oblong-lanceolate, round to acute at apex, cuneate at sessile base; ultimate segments linear-lanceolate, acute at apex, entire and flat at margin; undersurface of laminar part covered with powder, glaucous in appearance, densely covered with stellate or filiform hairs; marginal cells extremely modified. Sori terminal on short acroscopic axial lobes; involucre cup-shaped to tubular, subdeltoid, about 1.5 mm long, the lips slightly dilated.

Distribution in Thailand

NORTH-EASTERN: Loei; PENINSULAR: Surat Thani, Krabi, Nakhon Si Thammarat, Trang, Yala.

Distribution in Laos

Unspecified.

Wider Distribution

From Sri Lanka to Polynesia, north to Taiwan.

Ecology

Pendulous on moist muddy rocks in dense forest at medium altitudes.

Proposed IUCN Conservation Assessment

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

	Ferns of Thailand, Laos and Cambodia
Home \| Species Index \| Glossary
Hymenophyllum pallidum (Blume) Ebihara & K.Iwats. 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 Hymenophyllaceae Nomenclature Hymenophyllum pallidum (Blume) Ebihara & K.Iwats., Blumea 51(2): 232. 2006. – Trichomanes pallidum Blume, Enum. Pl. Javae: 225. 1828; Bedd., Handb. Ferns Brit. India: 41. 1883; Copel., Philipp. J. Sci. 51: 141 1933; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 67. 1939; Holttum, Rev. Fl. Malaya ed. 1, 2: 97. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 20: 17.1961. – Pleuromanes pallidum (Blume) C.Presl, Epimel. Bot.: 258. 1851 [‘1849’]; Copel., Philipp. J. Sci. 67: 56. 1938; Ching, Fl. Reipubl. Popularis Sin. 2: 172, pl. 14, f. 5–8. 1959; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 41. 1967; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 52. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 86. 1979. – Crepidomanes pallidum (Blume) K.Iwats., Acta Phytotax. Geobot. 35: 174. 1984; Tagawa & K.Iwats., Fl. Thailand 3: 613. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 71. 2000; Newman et al., Checkl. Vasc. Pl. Lao PDR: 27. 2007. Description Rhizome wiry, about 0.3 mm diam., covered with light brownish hairs. Stipes dark stramineous, hairy at the base, 1.5–4 cm long, without wings. Laminae bipinnate to subtripinnatifid, oblong to somewhat irregular in outline, about 5 cm long, 1.5 cm wide, somewhat variable in size; pinnae oblong to oblong-lanceolate, round to acute at apex, cuneate at sessile base; ultimate segments linear-lanceolate, acute at apex, entire and flat at margin; undersurface of laminar part covered with powder, glaucous in appearance, densely covered with stellate or filiform hairs; marginal cells extremely modified. Sori terminal on short acroscopic axial lobes; involucre cup-shaped to tubular, subdeltoid, about 1.5 mm long, the lips slightly dilated. Distribution in Thailand NORTH-EASTERN: Loei; PENINSULAR: Surat Thani, Krabi, Nakhon Si Thammarat, Trang, Yala. Distribution in Laos Unspecified. Wider Distribution From Sri Lanka to Polynesia, north to Taiwan. Ecology Pendulous on moist muddy rocks in dense forest at medium altitudes. Proposed IUCN Conservation Assessment Least Concern (LC). This species is widespread and not under any immediate 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

Hymenophyllum pallidum (Blume) Ebihara & K.Iwats.