Pteris.'] 
I. FILICES. 
3G5 
Frond large, tall, 1-5 ft. high, broadly deltoid, membranous, flaccid, glabrous 
or rarely puberulous, bright green, 2 -pinnate ; stipes and rachis glabrous, po- 
lished ; primary branches ovate-lanceolate, acuminate; secondary narrower, 
pinnatifid, sometimes caudate ; pinnules sessile, rarely stipitate, usually adnate 
and decurrent on the stipes, l-l-§- in. long, linear-oblong or linear, lobed or 
pinnatifid, the lobes serrate ; costa straight ; veins forked, netted at the base. 
Sori continuous or interrupted. — Hook. Ic. PI. t. 973. 
Northern Island : abundant, Banks and Solander, etc. ; Waikate and Great Barrier 
Island, Sinclair. Kermadec Islands, Macgillivray. Also found in Tasmania, Australia, 
and Juan Fernandez. Closely allied to P. tremula , and best distinguished by the netted 
veins. I suspect it to be only a variety of Forster’s P. comans. 
16. LOMARIA, Willdenow. 
Fronds usually tufted at the extremities of a stout prostrate or creeping 
rhizome, erect, rarely alternate and pendulous, of two forms, the outer barren 
or fertile at the base only, broader, the inner fertile narrower ; veins free, sim- 
ple or forked. Sori linear, close to the margin, continuous round the pinnules 
or lobes of the frond, often covering their whole lower surface. Involucre 
sometimes very obscure, linear, scarious, opening inwards, close to the margin 
and parallel to it, or continuous with it as in Pteris, sometimes reaching the 
costa. 
A large southern and tropical genus, chiefly distinguished from Pteris by the habit, and 
the fertile fronds distinct from the barren. 
a. Barren fronds pinnate. Pinnce much contracted at the base or stipitate. 
Bhizome very long , climbing. Fronds alternate , pendulous ... 1. L. filiformis. 
Rhizome prostrate or erect, short, stout. Fronds tufted, erect. 
Fronds 1-4 ft., broad. Pinnules linear, very coriaceous .... 2. A. procera. 
Fronds 8-18 in., very narrow. Pinnules many, oblong or rounded, 
membranous. Stipes and rachis scaly 3. A. fluviatilis. 
Frond 6-10 iu., narrow. Pinnules oval-oblong, membranous. Stipes 
and rachis naked 4 . L. membranacea. 
p. Barren fronds pinnatifid, or pinnate at the very base o.nly ; fertile pinnate. Pinnce 
attached by a very broad base. 
Rhizome wiry. Fronds 3-5 in., lanceolate. Pinnules oblong, mem- 
branous, creuulate 5. L. pumila. 
Rhizome stout. Frond deltoid. Pinnules falcate, coriaceous, lower 
deflexed 6 . L. Vulcanica. 
Rhizome short, stout, creeping. Frond pendulous, large, coriaceous. 
Pinnules broad 1. L. elongata. 
Rhizome short, stout, erect. Frond linear. Pinnules oblong, rounded, 
membranous, green below 8 . L. lanceolata. 
Rhizome short, stout, erect. Frond linear. Pinnules oblong, rounded, 
coriaceous, brown below 9 . L. discolor. 
Rhizome long, creeping, scaly. Fronds alternate, linear. Pinnules 
coriaceous 10. L. attenuata. 
Rhizome slender, creeping. Frond 2-12 in., linear, fertile longest. 
Pinnules coriaceous, linear-oblong 11. A. alpina. 
Rhizome very short. Frond 2-12 in., linear, fertile shortest. Pinnules 
coriaceous, rounded or oblong 12. A. Banlcsii. 
Rhizome very short. Frond 8-12 in., lyrate-pinnatitid. Pinnules 
short, broad, membranous, black 13. A. nigra. 
