ADIANTUM. 9 



])erior margin lobcd, lobes bidciUate, sori rcnifonn between 

 the incurved tcctli of each lobe, stipes and racliis ebeneous 

 glabrous. (Tak. LXXIII. A.) 



Ilab. Cuba, Linden (1813-4), ii. 18«i7.— I do not liiul lliis anywhere do- 

 scribed, but it seems a i)crfectl.v formed plant, with the slender lachis and 

 petioles sucli as are seen in A. limulatuni, but with very diirercntly shaped 

 pinna?, differently colored, having strongly toothed lobes even in fruc- 

 tification, and a creeping scaly caudex. Can it be a simply pinnated form, 

 with narrower pinnae, of" A. cristatum P 



15. A. dcUoidcum, Sw.; ca;spitose (a span liigli) fronds 

 linear-oblong ])innated (rarely bipinnate), pinna? menibrana- 

 ceo-chartaccons rather distant pctiolate obliquely cordato- 

 rotundate obscurely lobato-crenatc, iertile ones deltoid or 

 obliquely deltoid angles obtuse, sori linear interrupted or son)e- 

 times continuous nearly to the apex, stipes short ebeneous very 

 paleaceo-hirsute at the base and a line of delicate chaffy 

 hairs is continued up the front of the stipes and of the ebe- 

 neous rachis. — Sw. Syu. Fil. p. 122. Fl. Ind. Occ. iii. p. 

 1705. Kze. Anal. Pf'erid. p. 32, i. 17,/. 2. 



Hab. Jamaica, on calcareous rocks, Swartz, Pinrlie, Mr' Nab. St. Do- 

 mingo, Bcrtern. Crevices of rocks near the sea-shore, Cuba, Ji. D. Greene, 

 Esq. — A most distinct and well marked species: the fructification is con- 

 fined to the inferior and superior margins, not reaching quite to the apex ; 

 and the truncated base, whence the veins diverge, has no sorus. Our spe- 

 cimens are nearly all simply pinnate, which appears to be the normal cha- 

 racter. Kunze's plant, from St. Domingo, represent^ a lower pinna again 

 divided, as described by Swartz. Kunze compares the plant, and not in- 

 aptly, to Ptcris ealomelanos in habit. Some of our specimens are thrice the 

 size of the largest figured by Kunze. 



16. A. Shcplterdi, Hook.; frond linear-oblong (a foot and 

 more high) very much elongated slightly attenuated upwards 

 and obtuse erect stiff, pinnte quite sessile densely imbricated 

 chartaceo-coriaceous renifbrm oblicpiely inserted lower ones 

 distichous upper ones all secund radiato-venose the veins 

 prominent obscurely lobed when sterile, the fertile ones cre- 

 nato-lobate with nanow incisions the margin thickened all 

 round, involucres cordato-reniform inserted at the bottom 

 of the narrow .sinus their margins membranaceous, stipes 



? rachis ebeneous very glossy glabrous stout. (Tab. 



LXXIII. B.) 



Hab. Mexico, If. Bates, Es(/., 183}.— Of this singular plant I have 

 but a solitary, and, I regret to say, imperfect, specimen, presented to 

 me by my good friend Mr. Henry Shepherd, Curator of the Liverpool Bo- 

 tjuiic Garden, whose knowledge and love of Ferns justly entitle him to the 

 compliment of having it bear his name. The root and stipes arc wanting. 

 All that I possess is figured at Tab. liXXIlI. B. The peculiar direction of 

 the pinna may not be, and probably is not constant, but their fonu aud 



