3-2 ADIANTUM. 



dichotoraously radiating pedately tiipinnate, pinnules ap- 

 proximate peliolulate unequally semiovate obtuse (sterile 

 apices acuminate and slightly serrate) crenato-lobate membra- 

 naceous, veins anastomosing opaque olive-brown the base 

 obliquely cuncate, sori linear-oblong on each lobe rarely 

 on the lower margin. (Tab. LXXXU. B.) 



Hab. Beibice, Sir R. H. Schomhnrgk. Moist declivities of the mountain 

 Matouri, at Notaille and Oyapocb, French Guiana, Le Prieur (who sends it 

 marted " A. trapeziforme.''' — A most distinct and well defined species, 

 having the mode of growth of A. pedatum, and almost equally membrana- 

 ceous pinnae. These pinnae when dry assume a dark olive-brown colour. 

 Each lobe is truncated and terminated with a transverse linear oblong sorus. 

 The veining is very apparent, frequently anastomosing ; so that this would 

 be a Hewardia if that genus were tenalile, and if the character were derived 

 wholly from the venation. 



{Indistinctly pedate.) 



65, A. affiiie, Willd. ; frond subpedately bi- more rarely 

 tri-pinnate, pinnae lanceolate acuminate slightly falcate lax, 

 pinnules very membranaceous olive-brown (when dry) dimi- 

 diate broadly ovate-rhomboid obtuse cuneate at the base, 

 superior base tnuicated sometimes retrorsely subfalcate gla- 

 brous except a few scattered slender stiff hairs or setula^, 

 superior margin and round the apex crenato-lobate, the deep 

 sinuses soriferous, involucres rather small 7 — 8 on a pinnule 

 orbicular-reniform or orbicular-crescent-shaped submembra- 

 naceous, stipes triquetrous and slender, rachis ebeneons 

 glossy glabrous. — rr///(/. .S"/?. PI. v. p. 448. Endl. Prodr. 

 Fl. Noif.p. 14. All. Cunn. Bot. Nov. Zeal, in Hook. Cowp. 

 Bat. Mag. ii. p. 366. A. trapeziforme, Forst. Prodr. p. 83, 

 n. 460. Schkh. Fil. t. 121, {not Linn.) A. setulosum, J. .Sw^. 

 in Bot. Mag. Camp. 1846, p. 22. 



Hab. New Zealand, Forster, All. Cxmningham, J. D. Hooker (in damp 

 woods. Bay of Islands). Norfolk Island, Bauer, and Dr.Mc William, (who 

 introduced living plants to the Royal Gardens). — A delicate, flaccid species, 

 not ill figured by Schkuhr, 1. c, but by some blunder stated to be a native 

 of Jamaica, in consequence, no doubt, of its having been named " trape- 

 ziforme^'' a known tropical American species. Mr. J. Smith delected one 

 of its best characters, though a very minute one, and quite microscopic; 

 " It differs" he says, 1. c, " from A. pubescens {A. hirmtulum, Sw.) among 

 other marks, in being furnished with twelve or more black bristle-like hairs 

 (they might be called black aciculi) which are produced between the veins 

 on the upper surface, towards the lower margin and apex of the pinnules, 

 with a few on the underside." A.fulvum, Raoul, is a considerably larger and 

 fiiTTier and stouter plant, with much smaller pinnules of a totally different 

 texture, deeper sinuses for the sori, and a very rougli stipes and rachis. 



