30 ADIANTUM. 



Island of Salango, Seemann. Acapulco, £>?•. Sinclair. Sta. Martha, Fnnck, 

 71. 442. — For my finest specimens of this I am indebted to Captain Kellett, 

 K. N., commanding H. M. Surveyinjr ship " Herald,'' who much contributed 

 to the success of the naturalist, Mr. Seemann, in a four years' cruize in tlie 

 Pacific, durinjr which, two voyaf^es were made to the Arctic regions hy Beh • 

 ring's Straits in search of the gallant Franklin and his officers and crew. 

 The species was sent home by Mr. Seemann from the two localities above 

 mentioned. In its regular pedato-flabellale ramifications it most resembles yl. 

 jmlatum; but the whole plant is smaller, there are fewer branches, the form 

 and texture of the pinnules are difi'erent, and the fructification is totally at 

 variance with that of A. pedatian. The involucres are singularly large' for 

 the size of the pinnules, at length thick and coriaceous in the disk, but 

 remarkably depressed there. In the ramification and form of the involucres 

 the species exhibits the closest affinity w^ith A.pubescens ; where, however, 

 besides the pubescent character of the pinnules, their shape is different, much 

 more obtuse, and not glaucous beneath, and the involucres are much 

 smaller and more numerous. 



60. A. Lindscca, Cav. ; " frond petlate, branches pinnate, 

 lower pinnae rotundate, superior ones trapezoid, sori linear, 

 stipes glabrous." IVilld. Sp. PL v. p. 439. Siv. Sf//t. Fil. 

 p. 121. 



Hab. Quito {Cavanillea). — I have never seen any Adiantum from Quito, 

 corresponding with this brief character, though the ferns of that region 

 are tolerably familiar to me through the kindness of Professor Jameson. 

 Nor does any author, since Cavanilles' time, speak of it from his own 

 knowledge. 



61. A. angustatum, Kaulf. ; "frond pedate, branches pin- 

 nate, pinnae linear-lanceolate, superior base truncate, inferior 

 subdiraidiate serrated at the apex, superior margin inciso- 

 dentale, segments soriferous, stipes pubescent." Kaulf. En. 

 Fil. p. 202. 



Hab. Brazil, (A'aM//?(s.«). — "Pinnas thin (tenucs) full green, lower ones 

 half an inch long, deltoid, the rest an inch and a half long, 3 lines wide at 

 the base.'' — This character and brief description accord with some of the 

 states of our A. curvatinn having narrow pinnules ; and it is probably only 

 a variety of that species. 



62. A. Jlahelhdatum, Linn. ; frond flabellate bipartito- 

 pedately divided tripinnate, secondary pinnae lanceolate 

 acuminated, pinnules glabrous subcoriaceo-chartaceous ob- 

 liquely cuneate or seraiorbicular-cuneate superior base 

 truncate superior margin 2 — 4-lobed (and serrato-dentate in 

 the sterile ones, lobes soriferous, involucres large the breadth 

 of the lobe oblong straight rarely a little curved hard coriace- 

 ous), stipes (elongated) cbeneous scabrous below, the rest as 

 well as the slender rachis glossy and glabrous. — /./;///. Sp. 

 PI. p. 1558. Sw. Sijn. Fil. p. 121. IVilld. Sp. PI. v. p. 



