Family

Lindsaeaceae

Nomenclature

Lindsaea lucida Blume, Enum. Pl. Javae.: 216. 1828; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 122. 1939; Holttum, Rev. Fl. Malaya ed. 1, 2: 328, f. 187. 1955 [‘1954’]; Holttum, Dansk Bot, Ark. 20: 24. 1961; Ching, Fl. Reipubl. Popularis Sin. 2: 263. 1959; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 74. 1967; Kramer, Fl. Males., Ser. II, Pterid. 1: 233. 1971; Kramer, Gard. Bull. Singapore 26: 44. 1972; Tagawa & K.Iwats., Fl. Thailand 3: 142. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 93. 2000.

Description

Rhizome very short creeping, about 1.5 mm diam., bearing stipes close together, scaly near apex, scales very narrow, up to 3 mm long, 0.2 mm broad, brown, shining. Stipes brown to castaneous and scaly at base, stramineous or pale-green and quadrangular in section upwards, 2–10 cm long. Laminae simply pinnate, linear, up to 38 by 2.8 cm; rachis like the upper part of stipes; pinnae close, sessile; middle ones larger, patent, oblong to oblong-subdeltoid, 1.7 by 0.7 cm, the lower edge straight or curved, inner edge close to rachis, forming cuneate base with lower edge, rounded to moderately acute at apex; upper pinnae gradually becoming smaller, ascending, acute at apex, forming no terminal pinnae, lower ones more remote, smaller, patent or deflexed, herbaceous; veins distinct on both surfaces, free, except those joined by sori. Indusia narrow, thin, nearly reaching the margin of pinnae .

Distribution in Thailand

EASTERN: Buri Ram; CENTRAL: Nakhon Nayok; SOUTH-EASTERN: Chanthaburi, Trat; PENINSULAR: Ranong, Phuket, Satun, Yala, Narathiwat.

Wider Distribution

India, Burma, Indochina, S China, Peninsular Malaysia, Sumatra to the Moluccas.

Ecology

On rather dry or sandy ground near streams in shade at low or medium altitudes.

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 4675, Chanthaburi, Khao Khitchakut National Park (E); Middleton et al. 4646, Trat, Khlong Kaew National Park (E).