Davallia griffithiana Hooker, 1845
Description
Rhizome without the scales 3-6 mm in diametre, not white waxy (D. griffithiana Rhizome). Scales whitish, brown, or red-brown, without pale border, narrowed evenly towards the apex, curling backward or not, not bearing multiseptate hairs, with marginal setae at least in distal part, peltate, 6-9 mm long by 1-1.5 mm broad. Stipes adaxially grooved, 6-24 cm long, glabrous or with few scales. Lamina compound (D. griffithiana Leaf), bipinnate or tripinnate towards base and in the middle part, deltoid and broadest towards base, glabrous, 10-32 cm long by 8-27 cm broad, not or slightly dimorphous. Longest petiolules 2-10 mm long. Pinnae deltoid or linear. Longest pinnae 6-16 cm long by 4-8 cm broad. Pinnules of at least the larger pinnae anadromous, linear oblong or narrowly ovate. Longest pinnules 25-100 mm long by 7-60 mm broad. Ultimate leaflets narrowly ovate, lobed almost to the midrib or only halfway towards it. Ultimate segments or lobes obtuse or acute without a tooth, 2-5 mm long by 2-3 mm broad. Upper ridge at the junction of the costa and pinna-rachis not swollen. Leaf axes glabrous. Margins of the lamina of each leaflet not thickened. Veins in sterile ultimate lobes simple, forked or pinnate, not reaching the margin. False veins not present. Sori separate, borne several or single on a segment at the forking point of veins. Indusium attached at the base and only part of the sides, semicircular, about as wide as long, 1 mm long by 1-2 mm broad, upper margin not elongated, truncate or slightly rounded, separated from or even with lamina margin (D. griffithiana SEM, picture of indusia). 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.
Distribution
Continental Asia: India (Manipur 1 coll., Assam 14 coll.); Bhutan (3 coll.); Burma (Kentung 1 coll.); China (Chekiang 17 coll., Kiangsi 21 coll., Hunan 1 coll., Szechuan 1 coll., Kweichow 6 coll., Fukien 15 coll., Taiwan 7 coll., Kwangsi 3 coll., Fujian 1 coll., Fukien 6 coll., Quangdong many coll., Yunnan many coll., Tibet 2 coll.); Japan (Okinawa 1 coll.); Laos (3 coll.); Vietnam (Tonkin 3 coll.).
Not in Malesia.
Ecology
Altitude 500-1530 m.