Page:Manual of the New Zealand Flora.djvu/979

Hymenophyllum.]

16. H. minimum, ''A. Rich. Fl. Nouv. Zel.'' 91, 1. 14, f. 2.—Minute, forming matted patches on rocks or on the trunks of trees. Rhizome much branched, filiform, wide-creeping, glabrous or sparingly bristly. Stipes wiry, filiform, naked, $1⁄6$–½ in. long. Fronds very small, ¼–¾ in. long, broadly oblong-deltoid or ovate, erect or recurved, firm, pale-green when fresh, often reddish-brown when dry, pinnatifid or pinnate at the base. Segments 2–6 pairs, close, spreading, simple or the lower ones forked, linear, obtuse, more or less concave, rigid, quite glabrous; margins spinulose-dentate. Sori never more than one to a frond, terminating the main rhachis, stipitate, quite free. Indusium rather large, obovate-cuneate, narrowed at the base, 2-valved to the middle; valves spinulose on the back; margins rounded, sharply spinulose-dentate. Receptacle stout, often exserted in age.—''A. Cunn. Precur''. n. 242; Raoul, Choix, 39; ''Hook. f. Fl. Antarct. i. 103; Fl. Nov. Zel.'' ii. 12; ''Handb. N.Z. Fl. 353; Hook. and Bak. Syn. Fil. (edit. 2) 464; Thoms. N.Z. Ferns,'' 36.

17. H. Tunbridgense, Smith, Fl. Brit. 1141.—Forming broad densely matted moss-like patches on rocks or on the trunks of trees. Rhizome much branched, long, wiry, creeping. Fronds variable in size, ½–3 in. long, ½–1 in. broad, oblong or linear-oblong, pale-green, membranous, pinnate below, pinnatifid above. Stipes ½–1½ in. long, slender, wiry, naked; rhachis winged above, wingless below, or sometimes the wing is decurrent almost to the lowest pinna. Pinnæ spreading, close or rather remote, usually flabellately pinnatifid. Segments 3–12 to a pinna, linear, obtuse, flat, conspicuously spinulose-dentate. Sori terminal on a short lateral