Plants on rock. Stems long-creeping, slender, bearing widely spaced leaves; stems covered with dark multicellular hairs of 2 kinds, unbranched gland-tipped hairs and branched or unbranched rhizoidlike hairs, sparsely rooted. Leaves lanceolate, 1--2-pinnate-pinnatifid, 4--20 × 1--4 cm, bearing scattered short, unbranched, glandular hairs on principal veins; petioles shorter than blades. Venation pinnate, without unconnected false veins. Soral involucres terminal on lateral veins at base of lobes, conic, not flaring at mouth; involucral lips not dark-edged. Gametophytes composed entirely of branching filaments. Gemmae composed of short filaments of undifferentiated cells. 2 n = 72, 108, 144.
Home