lll.MI I KIJA. 29 



inp; iu worils, the ilcsoiiption of Kiuiiruss, as wi-ll as of WilMonow, applies 

 to tins, althouii^h Picsl refers llie i)laiits of these respective authors to two 

 (liftcrentpenora: — llial of Wilhknow (and HimihoMi) to true C/nlhea 

 and that of kaulfuss to liis CucmidarUi sprrlosa. It is ile.ir to nu- liow- 

 ever from his lifrurc of Cnoniiduria spcnoxa that he liad in view what I here 

 consider tlie Ilemildia nblnsa of Kaulfuss ; a species which more nearly 

 approaches tlie //. </raiiil!folia, if indeed it he really distinct. 



2. 11.? (ilternans, \\oo\i.; unarmed or only with extremely 

 minute distant tuhercle.s on the l)ase of tlie stipes, fronds 

 only (.?) ])innate, ])inna:) very remote petiolate alternate oblong 

 lanceolate nuMnbranacco-eoriaeeous acuminated deeply pin- 

 natifid almost to the racbis, at the base again jiinnated, seg- 

 ments and ]iinnules oblong rounded at the apex with rather 

 an acute point nearly entire, veins all free forked near the 

 base rarely simple, sori on the veinlets above the fork (seldom 

 in the axil) copious forming a series half-way between llu^ 

 margin and the costa, involucre a very shallow cup or little 

 pellicular peltate scale covered and concealed by the sorus. 

 Hook. Ic. PI. V. 7, /. 622. Polvpodium alternans, IVall. Cat 

 n. 329. 



Hal). Pcnan<r, Dr. Wallirh, l«-2'2, Lady D>if/i,visir. — Thh is one of the 

 many Cyatheacenus plants whose fjenns will pro1)al)ly long he considered 

 douhtfui. The hahit sufficiently liarmonizes with tlie species of this ge- 

 nus: hut the involucre is not dimidiate, hut peltate and uearlv (lat, going 

 all round the hase of the sorus, though small and distinct and wholly covered 

 and concealed hy the sorus itself. As far as I can judge from my speci- 

 mens the fronds are only once pinnated, in this rcs])ect resemhliug the 

 tirst section, with very remote pinna», which are nearly a foot long, and, 

 only helow, again jnunated, the rest deeply pinnatilid. \'eins quite free 

 (never anastomosing). 



3. H. ohfttsn, Kaidf. ; aculeated, fronds pinnate, ])inna' 

 broad-lanceolate acuminate ])innatifid or lobed half-w av down 

 to the racbis, lobes approximate so as to leave a Ner\ narrow 

 sinns, broadly oval obtuse subCalcate seiTtilate, sori at a little 

 distance from the margin and forming a continued line much 

 below the sinus so as to approach the racbis, veins generally 

 once or twice forked the lower ones angtdarly anastomosing 

 and sending out veinlets which meet or almost meet at the 

 sinus. (Tah. XIV. A.) Knu/J'. En. Fit. p. 252. Prcsl. Cne- 

 midaria speciosa, Preftl^Tent. Pterid. p. 57, t. 1, /! 10, 17, {sori 

 innccnnitc). Hemitelia speciosa, Mart. I. c. p. CO {in obs.), 

 t. J8,./: 2, {not Kaitlf.) 



Hall. West-Indian islands, prohahly generally. Jamaica, Wiles. Trini- 

 dad, Huron de Sr/iach, Lork/iart. St. Vincent, Rev. L. Guildituj. British 

 Guiana, ('. .S'. Parlier, Ksq, French Guiana, {Dvlessirl). — bower part of 

 the stipes aculeated with short, rather obtuse j)rickles. I'uder sick- of the 

 fronds with deciduous hullatc whitish scattered scales upon the costa and 

 nerves. 



