Rhizome without the scales 0.5-3 mm diam., white waxy under the scales. Scales brown or red-brown, with pale border from base to apex or not, narrowed evenly towards the apex, not or seldom curling backward, bearing multiseptate hairs at least when young or with marginal setae at least in distal part, peltate, 2.5-7 by 0.3-1.5 mm. Stipes adaxially grooved, 0.1-18 cm long, glabrous or with few scales. Lamina compound (pinnate with pinnatilobed to pinnatifid pinnae, or bipinnate to quadripinnate towards the base and in the middle part), simple (one pectinate or pinnatifid leaf), 3-foliate (the leaflets more or less divided), or pinnate towards the base, ovate, deltoid and broadest towards the base, glabrous, 0.6-24 by 0.5-14 cm, leaf strongly dimorphous or not or slightly dimorphous. Longest petiolules 0-4 mm long. Pinnae linear-triangular, narrowly ovate, linear, or ovate to deltoid. Longest pinnae 1-10 by 0.6-7 cm. Pinnules (if present) of at least the larger pinnae anadromous, linear oblong or narrowly ovate. Longest pinnules 5-55 by 5-20 mm. Ultimate leaflets (if present) lobed almost to the midrib or only shallowly lobed. Ultimate segments or lobes obtuse or acute without a tooth. In dimorphous plants lamina of fertile leaves pinnate with strongly dissected pinnae, bipinnate, or tripinnate towards the base and in the middle part. Longest petiolules of fertile leaves 1-7 mm long. Pinnae deltoid, linear-triangular, or narrowly ovate, 1-8 by 0.3-2.5 cm. Pinnules or pinnalobes deltoid, or linear-oblong, 2-35 by 1.5-15 mm. Ultimate leaflets linear oblong. Ultimate segments of fertile leaves 1-15 by 0.5-2 mm. Leaf axes glabrous. Veins in sterile ultimate lobes simple, forked, or pin-nate, reaching the margin. False veins not present. Sori separate, borne several on a seg-ment, or in much divided leaves frequently single on a segment, at the forking point of veins. Indusium attached at the broad base and hardly or not at the sides, semicircular or more or less triangular to rhomboid, wider than long or about as wide as long, 0.3-1 by 0.3-1.3 mm, upper margin not elongated, truncate or slightly rounded, extending to lamina margin or not. Lamina generally extending into a tooth at both sides or only at the outside of a sorus, or not extending into teeth beyond a sorus.
Home