嵩县岩蕨 song xian yan jue

Plants ca. 20 cm tall. Rhizomes erect, scaly at apex; scales light brown, lanceolate, 4-5 mm, thinly membranous, fimbriate. Fronds clustered; stipe light stramineous, lustrous, 5-7 cm, ca. 1.2 mm in diam., articulate at top, base densely scaly, upward glabrous; lamina 1-pinnate-pinnatifid, linear-lanceolate, 11-12 × 1.6-1.8 cm, herbaceous, both surfaces densely covered with articulate hairs and occasionally abaxially with elongate scales along midvein, apex acuminate; rachis with mixture of linear scales and multicellular hairs; pinnae 15-18 pairs, free, sessile, spreading; lower pinnae opposite, slightly shortened; middle pinnae largest, ovate-lanceolate, 7-10 × 3-4 mm, alternate, shallowly pinnatifid, base asymmetrical, ± auriculate, acroscopically truncate, basiscopically cuneate, apex obtuse; ultimate segments elliptic, touching each other, entire. Veins pinnate, invisible. Sori orbicular, terminal at tips of acroscopic veinlets, submarginal; indusia cup-shaped, margin ciliate, shallowly lobed into 3 segments at maturity.

● Rock crevices. Henan (Songxian).