Family

Tectariaceae

Nomenclature

Arthropteris palisotii (Desv.) Alston, Bol. Soc. Brot. II. 30: 6. 1956; Holttum, Blumea 14: 226. 1966; Holttum, Rev. Fl. Malaya, ed. 2, 2: 634. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 178, f. 13.3. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 237. 2000. – Aspidium palisotii Desv., Ges. Naturf. Freunde Berlin Mag. Neuesten Entdeck. Gesammten Naturk. 5: 320. 1811.

Aspidium ramosum Beauv., Fl. Oware 2: 54, t. 91. 1811. – Nephrolepis ramosa (Beauv.) T.Moore, Index Filic.: 102. 1858; Bedd., Handb. Ferns Brit. India: 284, f. 145. 1883.

Arthropteris obliterata auct. non (R.Br.) J.Sm.: E.Smith, J. Siam Soc. Nat. Hist. Suppl. 8: 6. 1929; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 287, f. 30, 3–4. 1940; Ching, Fl. Reipubl. Popularis Sin. 2: 318, pl. 28, f. 9–11. 1959.

Description

Epiphytic or lithophytic. Rhizome long creeping or climbing, irregularly branching, about 1.5 mm diam., bearing distant fronds; scales small, reniform with tails, 2 by 0.7 mm, dark brown, appressed. Stipes on distinct phyllopodia (a stipe base remaining as a scar after leaf-shedding) 2–3 mm high, 2–4 cm long, pubescent. Laminae linear-lanceolate, up to 40 by 7 cm, pinnate; middle pinnae larger, oblong, patent or ascending, round or moderately acute at apex, auricled at anterior and dimidiate at posterior bases, sessile, subentire or shallowly crenate at margin, up to 4 by 1 cm; rachis densely hairy; costa densely hairy above, sparsely beneath, texture softly papyraceous; veins more or less visible, forming acute angle with costa, forked. Sori in one row, submarginal or 1/3 way from margin of pinna to costa; indusia rotund-reniform smaller, usually shrinking in mature sori .

Distribution in Thailand

NORTHERN: Phrae, Tak; SOUTH-WESTERN: Phetchaburi; SOUTH-EASTERN: Chanthaburi; PENINSULAR: Surat Thani.

Wider Distribution

Old World tropics throughout, Africa to the Pacific.

Ecology

Epiphytic on tree trunks or on rocks in semi-shaded places.

Proposed IUCN Conservation Assessment

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