Page:Manual of the New Zealand Flora.djvu/1025

Lomaria.]

Rhizome short, tufted, suberect. Fronds numerous at the top of the rhizome, erect, harsh and rigid or membranous, pinnate or pinnatifid, sometimes dimorphic. Veins forked, connected by short cross veinlets on which the sori are placed. Sori oblong or slightly curved, in one or more rows parallel to the midrib, and between it and the margin of the pinnæ. Indusium the same shape as the sorus, attached to the cross veinlet, membranous, opening towards the midrib. Sporangia stalked, surrounded by an incomplete vertical ring, bursting transversely.

1. D. media, R. Br. Prodr. 151.—Rhizome short, stout, sub-erect, clothed with the bases of the old stipites. Stipes 3–8 in. long, more or less clothed with subulate scales towards the base, smooth or scabrous, blackish-brown. Fronds 12–18 in. long, 1½–4 in. broad, lanceolate, acuminate, coriaceous, dark-green, pinnate in the lower half or two-thirds, pinnatifid above; rhachis often pubescent. Pinnæ numerous, spreading; lateral 1–2 in. long, $1⁄5$–⅓ in. broad, linear or linear-lanceolate, acute or obtuse, spinulose-dentate, the upper ones dilated and confluent at the base, those below the middle free but often dilated or almost auricled at the base, the lower ones gradually reduced in size; terminal pinna often elongated. Sori short, oblong, usually in one series on each side of the midrib, but sometimes portions of a second row are irregularly developed.—''Hook. Sp. Fil.'' iii. 74; ''Hook. f. Handb. N.Z. Fl. 370; Hook, and Bak. Syn. Fil. 190; Thoms. N.Z. Ferns, 70; Field, N.Z. Ferns, 112, t. 20, f. 1. D. aspera, A. Rich. Fl. Nouv. Zel. 76; A. Cunn. Precur. n. 195; Raoul, Choix, 38 (not of R. Br.''). D. Kunthiana, ''Gaud. in Freyc. Voy. Bot. 401, t. 14; A. Cunn. Precur. n. 197; Raoul, Choix,'' 38.