Volume 3 > Part 4 > Year 1989 > Page 567 > Polypodiaceae > Arthromeris

4. Arthromeris lehmannii (Mett.) Chingwfo-0001117818

Contr. Inst. Bot. Natl. Acad. Peiping 2: 96. 1933; Tagawa & K.Iwats., S.E. Asian Stud. 5: 60. 1967.— Polupodium lehmanni Mett., Abhandl. Senckenb. Naturf. Ges. 2: 117. t. 3. f. 35. 1857; C.Chr., Contr. U.S. Natl. Herb. 26: 334. 1931.— Pleopeltis lehmanni (Mett.) Bedd., Ferns Br. India: t. 260. 1868; Handb. Ferns Brit. India: 370. f. 211. 1883. Fig. 57. 3–4.

Accepted Name : Selliguea lehmannii (Mett.) Christenh.
Global Fl. 4: 51. 2018.

Description : Rhizome long-creeping, about 5 mm diam., dirty brown, densely scaly throughout; scales ovate-oblong with long tails, round at peltate base, up to 7 mm long including tails about 5 mm in length, 1.5 mm broad, nearly concolorously brown or more or less paler towards margin, minutely toothed at apical portion. Stipes stramineous or pale castaneous, 10–20 cm long, glabrous. Laminae oblong, up to 45 by 40 cm, imparipinnate; rachis like the upper part of stipes; lateral pinnae 3–9 pairs, patent or slightly ascending, straight, sessile, lanceolate, caudately acuminate at apex, cuneate to round at acroscopic and round to subtruncate at basiscopic bases, up to 20 by 3 cm, subentire to waved and more or less crisped at margin, marginate by cartilaginous membrane; terminal pinna larger, about 20 cm long, like the lateral ones; main veins 3–5 mm remote, veins anastomosing copiously, more or less visible; herbaceous, green glabrous. Sori at junction of reticulate veins, two rows between adjacent main veins, 3 or 4 rows at each side of costa, round, up to 2 mm diam., superficial.

Thailand : NORTHERN: Chiang Rai (Doi Nang Ka), Chiang Mai (Doi Pha Hom Pok, Doi Chiang Dao, Doi Suthep, Doi Inthanon).

Distribution : Himalayas (type from Bhutan) to Upper Burma, SW China, Taiwan, south to the Philippines (Luzon).

Ecology : On mossy tree-trunks or on mossy rocks in dense evergreen forests at high altitudes (1,500–2,400 m).

Notes: This is the species most widely distributed among this genus, but is confined to the highest part of Northern Thailand and is unknown from Indochina. Sori are round but sometimes become elliptic and united with the adjacent ones. All the Thai collections are uniform in having glabrous fronds and there is no specimen referable to Arthromeris lungtauensis which is recorded from Indochina.

E-version notes : For more details see Ferns of Thailand, Laos and Cambodia.