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FOC | Family List | FOC Vol. 2-3 | Athyriaceae | Athyrium

14. Athyrium minimum Ching, Acta Bot. Boreal.-Occid. Sin. 6(3): 151. 1986.

小蹄盖蕨 xiao ti gai jue

Rhizomes short, small, erect, with sparse brownish, lanceolate scales at apex and stipe bases. Fronds caespitose; fertile fronds ca. 10 cm; stipe stramineous, 2-3 cm, ca. 0.5 mm in diam.; lamina pinnate, lanceolate, 4-6 × 1-1.5 cm, base hardly narrowed, apex acuminate; pinnae stalked (stalk ca. 1 mm), pinnatifid, spreading or ascending; basal pinnae slightly shortened, subovate or ovate-triangular, reflexed; middle pinnae unequally ovate or rhomboid, 8-10 × 3.5-4 mm, base inequilateral, auriculate at acroscopic side (auricle free, broadly ovate or oblong, with triangular teeth at margin), broadly cuneate at basiscopic base, pinnatipartite nearly to costae, apex obtuse; pinna segments small, 2 pairs, obovate or oblong, apex with 1 or 2 sharp teeth. Veins visible abaxially, pinnate in segments, lateral veins forked, with 1 veinlet per tooth. Lamina papery when dried, glabrate, dark brown adaxially, pale brown abaxially; rachis and costae stramineous abaxially, occasionally with 1 or 2 brownish, linear small scales. Sori J-shaped or horseshoe-shaped, 1 per segment, but sometimes 2 on auriculate lobes; indusia brownish, J-shaped or horseshoe-shaped, membranous, erose at margin, persistent. Perispore surface without folds.

● Valley forests, wet places, grasslands, by rocks or on rocky walls, near streamlets, under Miscanthus floridulus; 800-1000 m. N Taiwan (Taibei area).


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