阔基对囊蕨 kuo ji dui nang jue

Lunathyrium pseudoconilii Serizawa, Sci. Rep. Takao Mus. 5: 21. 1973; Athyriopsis pseudoconilii (Serizawa) W. M. Chu.

Plants summer-green. Rhizome creeping, black, slender, 1-1.5 mm in diam., apex with dense brown lanceolate thin scales; fronds separate, basal part of stipes persistent. Lamina subdimorphic; fertile frond 35-65 cm; stipe purple at base, upward stramineous, or purple throughout, 20-35 cm, 0.5-1 mm in diam., base sparsely scaly, scales like those on rhizome; lamina lanceolate or narrowly long deltoid, up to 15(-30) cm, up to 6(-15) cm wide, base usually widest, apex acuminate; free pinnae up to 7(-10) pairs, spreading or slightly reflexed, basal pinnae usually prominently larger, elliptic to elliptic-lanceolate, (1.5-)3(-8) × (0.9-)1.3(-2) cm, base asymmetrical, wider on acroscopic side, pinnatifid to pinnatipartite, apex obtuse, acute, or acuminate; upper pinnae shorter; pinna lobes rounded or truncate at apex, margin repand or sparsely serrate; veins in lobes mostly pinnate, veinlets simple, rarely forked, up to 4(-6) pairs. Lamina thinly herbaceous when dry, pale green, darker on adaxial surface, both surfaces of rachis with dense pale brown curly nodose hairs, both sides of costae and adaxial side of veinlets with sparse short nodose hairs. Sori linear, usually straight or slightly curved, single or double on acroscopic basal veinlet; indusia yellow-brown, surface usually with short nodose hairs, margin lacerate, flat when young. Spores semicircular in equatorial view, perispore surface with dense apically truncate long clavate ornamentation. n = 120.

Zhejiang [Japan].