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

33. Athyrium tarulakaense Ching, Acta Bot. Boreal.-Occid. Sin. 6(1): 12. 1986.

察陇蹄盖蕨 cha long ti gai jue

Rhizomes ascending, apex densely scaly; scales chestnut-brown in center, brown at margin, lanceolate. Fronds caespitose; fertile fronds 60-70 cm; stipe blackish brown at base, upward brown-stramineous, 20-25 cm, base 5-6.5 mm in diam., similarly scaly, upward occasionally with small scales; lamina bipinnatipartite, broadly lanceolate or oblong-lanceolate, 40-50 × 9-12 cm, base abruptly narrowed, apex acuminate; pinnae 20-22 pairs, subopposite or alternate, spreading or ascending, sessile, 3 or 4 pairs of lower pinnae gradually shortened; basal pinnae often deltoid-auriculate, 1-2 cm; middle pinnae lanceolate, 7-8 × ca. 1.5 cm, base truncate, pinnatipartite nearly to costa, apex acuminate; pinnules or pinna segments 15-18 pairs, basal pinnules subopposite, upper pinnules alternate, spreading, narrowly oblong, 6-8 × ca. 3 mm, margin lobate, apex rounded and crenate; segments with inconspicuous teeth at apex; veins visible adaxially, clearly visible abaxially, pinnate in pinnules or pinna segments, lateral veins 4 or 5 pairs, simple. Lamina firmly papery when dried, brown, glabrate on both surfaces; rachis and costae on abaxial surface brown-stramineous, with sparse brown small scales and squarrose-glandular hairs. Sori oblong, occasionally J-shaped or horseshoe-shaped, inframedial on acroscopic veins, 2-5 pairs per pinnule or segment; indusia brownish, oblong, occasionally J-shaped or horseshoe-shaped, membranous, erose at margin, persistent. Perispore surface without folds, with granular ornamentation.

● Margins of coniferous forests, rock crevices in forests, rare; 2800-3400 m. NW Yunnan.


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