88 ALSUl'Hir.A. 



the racliis, segments nanow-oblong acute falcate subcoriace- 

 ous serrated, rachis and costa with small bullate scales, and 

 one generally at the base of the sorus, veins all once forked, 

 sori much elevated cylindrical copious occupying nearly the 

 whole segment. Polypodium latebrosum. Wall. Cat. n. 318 

 (Alsophila in index). 



Hah. Penanj;^, Dr. Wallich. Assam, 3frs. Mack, Major Jenkins. — .Sti- 

 pes (lark mahogany-brown. Pinna; slender and graceful. In general hahit 

 a good deal allied to A. Capensis, and especially in the very prominent 

 and almost cylindrical sori, beneath which, frequently, but not always, a 

 concave scale is attached, showing a still further affinity with the preceding. 

 Here however the frond is more coriaceous, the veins are always forked, the 

 fructifications are more copious. In the present species the receptacle is 

 frequently split or forked. 



§ II. ,S'ori destitute of involucre, or so minute as to be tvholly covered by 

 the sorus and with difficulty observed. 

 * Species of the West Indies, Mexico and South Atnerica. 



6. A. Miersii, Hook. ; rachis aculeated with slightly de- 

 flexed prickles, fronds (bi?) pinnate, pinnules remote free even 

 to the terminal one narrow-lanceolate much and gradually 

 acuminated the long acumen serrated cuneate at the base the 

 rest pinnatifid half-way to the rachis glabrous, bullate scales 

 none, segments ovate obtuse nearly entire, veins simple and 

 forked, sori on all the segments chiefly occupying the lower 

 portion situated half-way between the costa and the margin, 

 receptacles hairy. A. acuminata, J. Sm. Gen. {name only). 



Hab. Organ Mountains, Gardner, n. 117. Tejuco, J. Miers, Esq. — An 

 extremely well-marked Fern, with glabrous, glossy IVonds : the pinnules 

 much elongated, 6 — 8 inches long, gradually acuminated into a finely ser- 

 rated point, the whole of which is destitute of fructification; this latter is 

 confined to the segments, and is situated on the veins or forks of the veins, 

 the two series of which take the shape of the segments, being placed about 

 equidistant between the costa and the margin. Receptacles slightly ele- 

 vated, hairy. 



7. A. procera, Kaulf.; aculeate, fronds bipinnate, pinnules 

 nearly sessile the ultimate ones united into a pinnatifid acu- 

 minated apex everywhere glabrous sinuato-pinnatifid lanceo- 

 lato-acuminate truncate at the base, the segments short round- 

 ed oblique obtuse quite entire with bullate scales upon the 

 rachis and costa, sori in 2 series half-way between the costa 

 and margin on the simple veins, receptacles elevated scarcely 

 hairy. — A. procera, Kaulf., Mart. PL Crypt. Bras. p. 64 et 

 40. Polypodium procorum, Willcl. P. pungens, Willd. {ac- 

 cording to Martins). A. Arbiiscula, Prcs/ {specimen in Herb. 

 tiostr.) 



Hab. Brazil, Provinces of St. Paul, Minas and Para, Martins. Organ 



