Osmolindsaea odorata (Roxb.) Lehtonen & Christenh.




Osmolindsaea odorata (Roxb.) Lehtonen & Christenh., Bot. J. Linn. Soc. 163: 335. 2010. – Lindsaea odorata Roxb., Calcutta J. Nat. Hist. 4: 511. 1844; Kramer, Fl. Males., Ser. II, Pterid. 1: 228. 1971; Kramer, Gard. Bull. Singapore 26: 40. 1972; Tagawa & K.Iwats., Fl. Thailand 3: 141, f. 10.3. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 43, 94. 2000.

Lindsaea cultrata auct. non (Willd.) Sw.: Bedd., Handb. Ferns Brit. India: 72, f. 36. 1883; Christ, Bot. Tidsskr. 24: 110. 1901; C.Chr., Bot. Tidsskr. 32: 345. 1916; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 120. 1939; Holttum, Rev. Fl. Malaya ed. 1, 2: 328, f. 188. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 20: 24. 1961; Ching, Fl. Reipubl. Popularis Sin. 2: 260, pl. 22, f. 1–7. 1959; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 74. 1967.


Rhizome short creeping, 1.0–1.2 mm diam., bearing stipes 2–5 mm apart, dark brown; scales dense, hair-like, up to 3 mm long, dark brown to castaneous. Stipes up to 8 cm long, dark brown, terete. Laminae simply pinnate, stramineous or faintly castaneous upwards, linear or linear-lanceolate, up to 13 by 1.7 cm, gradually narrowing towards both apex and base; pinnae up to 20 pairs, more or less ascending, stalked, except on the upper ones; middle ones the largest, about 8 mm apart, oblong, round at apex, cuneate at base, up to 8 by 4 mm, lower edge roundly curved and entire, inner edge straight or curved, upper edge lobed to 1/3, upper ones gradually upwards, shortly stalked or sessile, more ascending; lobes rounded, 1–2 mm broad, up to 2 mm in depth, thin; veins raised on both surfaces, free except when united by sori. Sori up to 1.5 mm long, interrupted by sinus between lobes; indusia firm, reaching the margin or lobes, the margin more or less irregular.

Distribution in Thailand


Wider Distribution

Tropics of the Old World, Madagascar and Sri Lanka to Australia, north to S Japan.


On sandy rocks in stream-beds in dense evergreen forests to 1200 m alt. on Phu Kradueng.

Proposed IUCN Conservation Assessment

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

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