10 CONTRIBUTIONS TO QUEENSLAND FLORA. 
to each tooth or lobe. Indusium peltate and rigid, but fallen 
away from old sori.—Polystichum adiantiforme, J. Sm., 
Domin, Prodr. p. 57. 
Hab. : Tambourine Mountain, K. Domin. 
A. cordifolium, Sw., var. tambourinense, Domin, Prodr. 
p. 66 (under Nephrolepis). 
The distinguishing marks given do not seem sufficient 
to remove this plant from the common form. 
A. exaltatum, Sw., var. hirsutulum, Baker (under 
Nephrolepis). Closely allied to the var. longipinne, but easily 
distinguished by the rhachis densely and both surfaces (espe- 
cially the upper) more or less coated with ferruginous down.— 
Nephrclepis hirsutula, Presl., Domin Prodr. p. 68. 
Hab. : Harvey’s Creek, K. Domin ; Mackay, Amal. Dietrich. 
A. volubile, Sm. (under Nephrolepis). Rhizome climbing 
_ high over trees, with adpressed chestnut scales on the short 
lateral distant spurs, whence spring clusters of stipes; pine 
obtuse or not very acute; venation and sori much as in A. 
exaliatum.—C. B. Clarke in Trans. Linn. Soc. Bot. 2nd ser- 
i. p. 541, tab. Ixxviii. 
A tropical Asiatic species in North Queensland represented 
only by the following variety :— 
Var. cavernicolum, Domin, Prodr. p. 66 (under Ne phrolepis 
radicans, Kuhn). Differs principally in its membranous 
texture and the lower pinne sometimes obscurely subcordate. 
Hab. : Chillagoe Caves, K. Domin. 
A. submarginale, Domin, Prodr. p. 62 (under Arthropteris)- 
Cannot separate this species from A. ramosum, Beauv. 
A. prorepens, Domin, Prodr. p. 64 (under Arthropteris). 
The sori being unknown of this species, nothing can be said 
about its position until more is known of it. 
A. decorum, Domin, Prodr. p. 48. I fail to separate this: 
species from A. pteroides, Sw. 
