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

12. Athyrium rupicola (Edgeworth ex C. Hope) C. Christensen, Index Filic. 145. 1906.

岩生蹄盖蕨 yan sheng ti gai jue

Asplenium rupicola Edgeworth ex C. Hope, J. Bombay Nat. Hist. Soc. 12: 531. 1899; A. filix-femina (Linnaeus) Bernhardi subvar. elongata C. B. Clarke ex Blanford.

Rhizomes shortly creeping, apex ascending, densely clothed with chestnut-colored or dark brown, narrowly subulate-lanceolate, fibriform-tipped scales. Fronds caespitose; fertile fronds 25-55 cm; stipe brown at base, upward stramineous, 5-15 cm, 1.2-2.5 mm in diam., base densely clothed with similar scales as those on rhizomes, upward glabrate; lamina pinnate, narrowly or broadly lanceolate, 20-35 × 5-8.5 cm, base gradually narrowed, apex acuminate; pinnae pinnatipartite, 20-30 pairs, many lower pairs of pinnae gradually shortened into triangular auricles, ca. 1 cm, subopposite, slightly inclined; middle pinnae narrowly deltoid-lanceolate or broadly lanceolate, 2.5-4 cm × 8-16 mm, base truncate, sessile, pinnatipartite to narrow wing of costa, apex acuminate, subopposite or alternate, spreading or slightly curved upward; pinnules 8-12 pairs, basal acroscopic pinnules larger, other pinnules oblong, 4-5 × 1.5-3 mm, adnate to narrow wing of costa, margin serrate or biserrate, apex obtuse or acute. Veins inconspicuous adaxially, visible abaxially, pinnate in segments, lateral veins ca. 6 pairs, simple or forked. Lamina herbaceous when dried, greenish brown, glabrate on both surfaces; rachis and costae on abaxial surface stramineous, glabrate, or occasionally with few brownish, fibrous scales. Sori orbicular, abaxial on acroscopic veins, 2-5 pairs per pinnule; indusia pale brown, large, orbicular-reniform or subovate, erose at margin, persistent. Perispore with prominent folds, surface granular. 2n = 80.

Valley forests, rock crevices, damp areas at roadsides; 1800-3800 m. Sichuan, SE Xizang, Yunnan [Bhutan, India, Kashmir, Nepal, N Pakistan].


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