Asplenium simonsianum Hook.
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.
Distribution in Thailand
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.
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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