Lindsaea repens (Bory) Thwaites var. pectinata (Blume) Mett. ex Kuhn

Family

Lindsaeaceae

Nomenclature

Lindsaea repens (Bory) Thwaites, Enum. Pl. Zeyl.: 388. 1864; Bedd., Handb. Ferns Brit. India: 74. 1883; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 120. 1939; Kramer, Fl. Males., Ser. II, Pterid. 1: 237, f. 43–45. 1971; Kramer, Gard. Bull. Singapore 26: 45. 1972; Tagawa & K.Iwats., Fl. Thailand 3: 143. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 95. 2000. – Dicksonia repens Bory, Voy. Iles Afrique 2: 323. 1804.

Davallia macraeana Hook. & Arn., Bot. Beech. Voy.: 108. 1832. – Lindsaea macraeana (Hook. & Arn.) Copel., Bernice P. Bishop Mus. Bull. 59: 70. 1929; Holttum, Rev. Fl. Malaya ed. 1, 2: 324, f. 185. 1955 [‘1954’]; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 73. 1967.

var. pectinata (Blume) Mett. ex Kuhn, Ann. Mus. Bot. Lugduno-Batavi 4: 277. 1869; Kramer, Blumea 15: 568; Tagawa & K.Iwats., Fl. Thailand 3: 143. 1985. – Lindsaea pectinata Blume, Enum. Pl. Javae: 217. 1828.

Description

Rhizome long creeping or climbing, 2.5–3 mm diam., bearing stipes 1–5 cm apart, brown; scales linear, about 3 mm broad, entire, brown, more or less shining. Stipes brown in lower and stramineous in upper parts, 1–2 cm long, quadrangular in section except for the basal portion. Laminae simply pinnate, linear, gradually acuminate at apex, gradually narrowing towards base, about 45 by 4 cm; rachis pale green in upper part; pinnae close, up to 50 pairs, sessile, middle ones the largest, slightly oblique, quadrangular, gradually narrowing towards apex, almost straight and entire at lower edge, inner edge straight, close to rachis, forming narrowly cuneate base with lower edge, rounded at apex, serrate at upper edge, up to 2.5 cm long, 8 mm broad; upper pinnae smaller and more spaced, deflexed; each serration at margin including a single veinlet or two, 0.5–1.5 mm broad, to 1 mm deep, rounded; herbaceous; veins a few times forked, visible on both surfaces, free except those united by sori. Sori usually of single veinlet, or joining of lobes, up to 1.5 mm long; indusia narrow, membranous, hidden under sori at maturity.

Distribution in Thailand

EASTERN: Buri Ram; PENINSULAR: Surat Thani, Nakhon Si Thammarat, Trang.

Distribution in Cambodia

Kampot

Wider Distribution

Mascarenes, tropics of Asia and Oceania to Hawaii, north to Sikkim and India (Assam), south to Queensland.

Ecology

Climbing on trees in dense evergreen forests usually at about 900–1500 m alt.

Similar species

Lindsaea oblanceolata Alderw.

Proposed IUCN Conservation Assessment

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

Notes

This is one of the polymorphic species and the Thai plants all belong to var. pectinata according to the classification by Kramer; the range of this variety is in Sikkim, Assam, Sri Lanka, Indochina and W to Central Malesia. {SO NEED TO MAKE SURE DISTRIBUTION IN OTHER SECTION REFLECTS THIS}

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