Davallia graeffei Luerssen, 1871
Description
Rhizome without the scales 1.4-3 mm in diametre, white waxy under the scales. Scales brown, without pale border, narrowed evenly towards the apex, not or seldom curling backward, bearing multiseptate hairs at least when young, peltate, 5-7 mm long by 1-1.5 mm broad. Stipes dark brown, adaxially grooved, 11-22 cm long, glabrous or with few scales. Lamina compound, tripinnate, or quadripinnate towards base and in the middle part, deltoid and broadest towards base, glabrous, 9-25 cm long by 10-20 cm broad, strongly dimorphous, or not or slightly dimorphous. Longest petiolules 3-7 mm long. Pinnae deltoid or ovate. Longest pinnae 7-14 cm long by 4-8 cm broad. Pinnules of at least the larger pinnae anadromous, ovate. Longest pinnules 2.5-5 mm long by 1.5-4 mm broad. Ultimate segments of sterile compound leaves 5-15 mm long by 2-4 mm broad. Ultimate leaflets linear oblong. Ultimate segments of fertile leaves 1.5-3 mm long by 1-1.5 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 pinnate, reaching the margin. False veins present. Sori separate, frequently single on a segment, at the forking point of veins. Indusium also attached along the sides, pouch-shaped, oblong, longer than wide, 1 mm long by 0.8 mm broad, upper margin not elongated, truncate or slightly rounded, separated from or even with lamina margin. Lamina generally extending into a tooth at both sides of a sorus.
Distribution
Pacific: Vanuatu (Aneityum 1 coll.); Samoa (Savaii Island 4 coll., Upolu 5 coll., Tua Manua 1 coll.).
Ecology
Not recorded.