Asplenium simonsianum Hook.

Family

Aspleniaceae

Nomenclature

Asplenium simonsianum Hook., Icon. Pl. 10: t. 925. 1854; Tagawa & K.Iwats., Acta Phytotax. Geobot. 24: 61. 1969; Holttum, Gard. Bull. Singapore 27: 152. 1974; Tagawa & K.Iwats., Fl. Thailand 3: 269. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 178. 2000. – Thamnopteris simonsiana (Hook.) T.Moore, Index Filic.: L. 1857; Bedd., Handb. Ferns Brit. India: 141. 1883.

Description

Epiphytic or lithophytic . Similar to Asplenium phyllitidis D.Don but differs in: frond gradually narrowing towards acuminate apex, long-attenuate at base .

Distribution in Thailand

NORTHERN: Tak.

Wider Distribution

India (Assam).

Ecology

In moist evergreen forests by streams at medium altitudes.

Proposed IUCN Conservation Assessment

Data Deficient (DD).  This species has a wide overall distribution but in Thailand its only known popualtions are in disurbed areas.  Its status in NE India and possible areas inbetween are unknown.

Notes

This is close to Asplenium phyllitidis but still smaller, with fronds narrowing evenly towards both ends. Tardieu once recorded this species from Vietnam (Aspl. Tonkin.: 28. 1932), but referred the materials later to her new speies A. colaniae, which is distinguished from A. simonsianum by long, narrowly winged or wingless stipes and the caudately acuminate apex of the fronds.

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