疏网凤了蕨 shu wang feng liao jue

Stipe straw-colored or dull straw-colored, ca. 40 cm × 3-5 mm; lamina abaxially grayish green, adaxially brownish green, ovate-deltoid or ovate-oblong, 28-50 × 20-25 cm, 2-pinnate, herbaceous when dry, both surfaces glabrous. Lateral pinnae 3-5 pairs, basal pair largest, deltoid-ovate, 18-25 × 10-15 cm, stalks ca. 1.5 cm, pinnate; lateral pinnules 1-3 pairs, lanceolate, 8-12 × 2-2.5 cm, shortly stalked or adnate to costa, base unequal, somewhat cordate or rounded-cuneate, apex caudate-acuminate; terminal pinnule much larger, as medial pinnae in shape and size. Medial pinnae simple, 15-20 × 2-3 cm. Pinna and pinnule margins serrate, teeth sparse and shallow. Veins free except forming a few discontinuous areoles along each side of costae; hydathodes linear, not extending to tooth base. Sori extending close to lamina margin.

● Forests; 1000-1600 m. Gansu, Guizhou, Henan, Hubei, Hunan, Shaanxi, Sichuan.

Coniogramme wilsonii resembles C. japonica, but it differs in its pinnules with unequal and somewhat cordate bases and its areoles fewer and discontinuous along the midribs.