Family

Davalliaceae

Nomenclature

Davallodes imbricata (Ching) M.Kato & Tsutsumi, Acta Phytotax. Geobot. 59: 12. 2008. – Araiostegia imbricata Ching, Fl. Reipubl. Popularis Sin. 2: 291, 377. 1959; Tagawa & K.Iwats., Acta Phytotax. Geobot. 24: 180. 1970; Tagawa & K.Iwats., Fl. Thailand 3: 152, f. 11.3. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 232. 2000.

Description

Rhizome creeping, about 5 mm diam., densely scaly throughout; scales oblong, moderately acute at both ends, about 4 by 2 mm, entire, pale brown, darker in age. Stipes on scaly phyllopodia (stipe base remaining as a scar after leaf-shedding) about 1 cm high, light green to stramineous, very sparsely scaly, 18–25 cm long. Laminae oblong-subdeltoid, acute to acuminate at apex, quadripinnate, 40–55 by 25–40 cm; lateral pinnae more than 10 pairs, alternate, basal ones the largest, asymmetrically oblong-subtriangular, caudately acuminate at apex, truncate at base, about 20 by 15 cm; pinnules patent or broadly placed on costae, oblong-subdeltoid, acute to moderately and unequally acute at apex, unequally cuneate at base; ultimate segments with a few lobes; lobes entire, acute at apex, about 0.7 mm broad; herbaceous to softly papyraceous. Sori one for each ultimate segment, rather large, up to 1.2 mm diam.; indusia very small, up to 0.5 mm long, completely hidden under sori at maturity.

Distribution in Thailand

NORTHERN: Chiang Mai, Lamphun.

Wider Distribution

China (S Yunnan).

Ecology

On mossy tree trunks in dense evergreen forests at 900–1300 m alt.; known only in one locality in Thailand.

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Banoc 82, Chiang Mai (CMU).