262 



§ IV. (V. ?) Fronds tripinnate or decompound. 



{Sort ahiiost invariably short, equal or nearly so, rarely continuous 

 or elongated as in speciosiim and fumarioides). 



* Trapeziform group. 



Sp. trapeziforme, Linn. ; cultratum, J. Sm. MSS. ; subcordatum, 

 Sw. ; Peruvianuin, Kl. ; Mathewsianum, Hook. ; sinuosura, Gardn. ; 

 am pi una, Pr. 



** Capillus- Veneris group. 



Sp. Capillus-Venei-is, Linn. ; CEthiopicum, Linn. ; assimile, Sw. ; 

 pulchellura, Bl. ; fumarioides, Willd. ; digitatum, Pr. ; emarginatum, 

 Bory ; cuneatum, Langsd. 8f Fisch. ; glaucophyllura. Hook., — this is 

 the A. cuneatum, &. angustifolium, of Mart. & Galeot. Fil. Me.v. p. 

 70, — Sir William appears to consider it distinct as a species ; venus- 

 tura, Don ; fragile, Sw. ; excisum, Kze. ; concinnum, H. B. K. ; sca- 

 brum, Kaulf. ; Chilense, Kaulf. ; sulphureum, Kanlf. ; sessilifolium, 

 Hook., a new species, found at Chacapoyas, Peru, by Mr, Mathews ; 

 parvulum, Hook. fil. ; Henslovianum, Hook. fil. ; speciosura, Hook., 

 a new species, found about the village of Sasarangu, El Ecuador, 

 Pacific side, by Mr. Seemann, in August, 1847, and also by Mr. Mac 

 Lean in Peru ; tenerum, Sw. 



*** Cristatum group. 



Sp. cristatum, Linn. ; microphyllum, Kaulf. ; Kunzeanum, Kl. ; 

 crenatum, Willd. ; politum, Willd. ; pyramidale, Willd. ; polyphyl- 

 lum, Willd.; macrocladum, ^/. ; Wilesianum, //oo^., a supposed new 

 species, collected in Jamaica, by Mr. Wiles, — the author queries 

 whether it may not be the A. crenatum of Willdenow, Sp.,Pl. v. 446; 

 Bi'asiliense, Raddi; cardiochlaena, ^5^e. ; Lobbianum, Hook., anew 

 species, collected in Java, by Mr. Lobb ; formosum. Brown ; Cun- 

 ninghami, Hook., apparently mistaken by the late Allan Cunningham 

 for the A. formosum of Brown, — it has been gathered in the Northern 

 Island of New Zealand by Allan Cunningham, Sinclair, Colenso, Dr. 

 Hooker, &c. ; fulvum, Raoul. 



Several doubtful species are also mentioned, and some of them 

 referred to other genera ; but we think, notwithstanding the labours 

 of our author, and also those of J. Smith, Kunzc, Presl, Houlston, &c., 

 &c., that the group of ferns hei'e standing under the generic name of 

 Adiantum still require a careful and philosophical investigation, and 

 a judicious division into genera and species. 



