Tectaria singaporiana (Wall. ex Hook. & Grev.) Copel.

Family

Tectariaceae

Nomenclature

Tectaria singaporiana (Wall. ex Hook. & Grev.) Copel., Sarawak Mus. J. 2: 368. 1917; Ching, Sinensia 2: 25. 1931; Holttum, Rev. Fl. Malaya ed. 1, 2: 512. 1955 [‘1954’]; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 98. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 380. 1988; Holttum, Fl. Males., Ser. II, Pterid. 2: 100. 1991; Boonkerd & Pollawatn, Pterid. Thailand: 217. 2000. – Aspidium singaporianum Wall. ex Hook. & Grev., Icon. Fil.: t. 26. 1827; Bedd., Handb. Ferns Brit. India: 212, f. 107. 1883; Bonap., Notes Ptérid. 14: 50. 1923. – Type: Singapore, Wallich s.n. (lectotype E; isolectotypes E, K (x2)).

Description

Rhizome short, ascending to suberect, bearing a tuft of fronds at apex, scaly; scales gradually narrowing from base towards apex, brown, thin but stiff, up to 7 by 1 mm, the margin ferrugineous or hairy. Stipes castaneous, more or less polished, up to 45 cm in fertile and 35 cm in sterile ones, scaly at base, appressed hairy upwards. Laminae simple, entire, broadly lanceolate, caudate-acuminate at apex, attenuate at base, up to 40 by 10 cm, the fertile ones usually narrower; papyraceous, green to deep green, glabrescent; rachis like the upper part of stipe, glabrescent, distinctly raised beneath; main veins raised beneath, venation copiously anastomosing with main areoles and smaller areoles bearing rarely branched included free veinlets. Sori usually dorsal on reticulate veinlets, two rows between adjacent cross veins and 4–5 rows between main veins, round, about 1.5 mm diam.; indusia small, glabrous .

Distribution in Thailand

PENINSULAR: Surat Thani, Krabi, Nakhon Si Thammarat, Trang, Satun, Songkhla, Yala, Narathiwat.

Wider Distribution

Western Malesia.

Ecology

On mountain slopes often near streams in dense evergreen forests at low to medium altitudes lower than 900 m alt., fairly common.

Proposed IUCN Conservation Assessment

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

Notes

Protologue: http://biodiversitylibrary.org/page/3950877

Voucher specimens - Thailand

Middleton et al. 5494, Songkhla, Khao Nam Khang National Park (E).
Habit

Habit

Habit

Habit

Frond

Frond

Young frond

Young frond

Venation

Venation

Venation

Venation

Base of lamina

Base of lamina

Upper surface of fertile frond

Upper surface of fertile frond

Upper surface of fertile frond

Upper surface of fertile frond

Young lamina and young sori

Young lamina and young sori

Lower surface of lamina

Lower surface of lamina

Old sori

Old sori

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