山西岩蕨 shan xi yan jue

Plants 8-9 cm tall. Rhizomes short, erect, scaly; scales brown, ovate-lanceolate, ca. 3 mm, membranous, margin ciliate. Fronds clustered; stipe stramineous, 1-3 cm, ca. 1 mm in diam., articulate at top or above middle, with sparse articulate hairs and few lanceolate scales, later fallen; lamina 1-pinnate-pinnatifid, linear-lanceolate, 4.5-6 cm × 8-12 mm, thinly papery, abaxially with few articulate hairs, adaxially glabrous, base slightly attenuate, apex acuminate; rachis sometimes with sparse linear scales; pinnae 12-14 pairs, sessile, well separated from each other; lower 2 pairs of pinnae reduced; middle pinnae equally long, triangular-ovate, 4-6 × 3-4 mm, base rounded-cuneate, margin pinnatifid, apex acute; ultimate segments 3-5 pairs, basal one largest, hemielliptic, undulate, apex rounded. Veins obscure, almost reaching laminar margin. Sori orbicular, terminal at end of veinlets, 3 or 4 per pinna; indusia saucer-shaped, fimbriate.

● Rock crevices. Shanxi (Ningwu).