24 ADIANTUM. 



long-lanceolate acute sharply and unequally serrated the 

 superior base truncate rotundate, lower one cut off, sori on 

 both margins oblong, rachisvilloso-paleaceous." Presl, Reliq. 

 Hoiuk. p. 62. 



Hab. Guayaquil, Hanke. — "Affine A. vario et priomphi/Uo, Himib., 

 sed magnitudo fvondis, senatura pinnularum, et conditio sororum pro 

 nova specie cerlaut." — Presl. 



47. A.fritctuosum,Si)Y.; " frond ovato-oblong membrana- 

 ceous rather firm bipinnate, pinnae alternate petiolate erecto- 

 patent (or patent) elongated lanceolato-linear acuminate, 

 fertile pinnae dimidiate oblong the apex obtuse or rounded 

 the base above truncate lowest ones subflabellate entire, 

 (' margine superiore exterioreque, superioribus, margine su- 

 periore crenatis,') crenatures sorophorous, sterile and superior 

 oblong subfalcate the upper and exterior margin duplicato- 

 serrate or incised, sori about 6 large oblong subconiiguous, 

 involucres canescent, rachis and long angled stipes stout 

 ebeneous rufous-hirsute." Kze. Sproig. Syst. Veget. ir. p. 113. 

 Kunze, Sijn. Fil. Poep. Litmaa, ix. p. 81, and in SchkuJir, 

 Fit. Siippl. p. 28, /. 15. A. macrocarpum, Presl. A, priono- 

 phyllum. Martens S; Gal. St/n. Fil. Mex. p. 69, {not H.B. K.) 



Hab. Tropical America, a. slrictum. Cuba, Poeppig. Vera Cruz, 

 Mexico, Linden, n. 78. Cordillera of Oaxaca, Galeotti, u. 6416. New 

 Grenada, Cuming, n. 118.3. Brazil, Gardner, n. 3549. — ^3. laxius ; pinnae 

 subflexuose, pinnules less close, fructifications smaller. Berbice, Sir R. H. 

 Schombiirgk. Guiana, Parker. — It has not been difficult to find plants in 

 my herbarium quite corresponding with the excellent figure of A. fructvo- 

 snm, Kze. in his Supplement to the Filices of Schkuhr; but whether A. 

 fruct. be really and permanently distinct in all its characters (and I have 

 taken Kunze's own specific character) is another matter. It is chiefly dis- 

 tinguished from our A. prionnphi/llu7n by the large and few sori, and by 

 the involucres being generally pale-coloured, canescent, but not downy 

 (though sometimes hirsute), and by the fertile pinnules more obtuse, and 

 not having an upward curvature. I find it gradually passing into what I 

 have called var. 0. ; and that seems sometimes, on the one hand, so to merge 

 into the var. y. o{ A. p-innophi/llum, that I have been doubtful to which of 

 these species 1 should refer that form, while small specimens again border 

 upon our A. ublusum. 



48. A. urophyllum, n. s. ; frond large (Ig- foot) bipinnate 

 ovate acuminate erect stiff, pinna) 5 — 7 petiolate erecto- 

 patent incurved broad lanceolate with a very long slender 

 caudate point, pinnules brownish-green rather opaque gla- 

 brous almost quite sessile appro.ximate subimbricate es- 

 pecially at the base oblong falcate (curved upwards) charta- 

 ceous acute or acuminate crenato-lobate at the apex and 

 upper margin, superior base truncate or slightly rounded 

 and lapping over the rachis, small rounded lobes soriferous. 



