21. ADIANTUM, EUADIANTUAt. 117 



sort numerous, obversely reniform, as deep as broad, placed in distinct hollows 

 round the outer edge. Hk. Sp. 2. p. 9. t. 73. B. 



Hab. Mexico, gathered originally by Mr. Bates in 1834 ; and fine specimens have 

 been received lately from Morelia from Mr. Glennie. In the texture of the frond and 

 form of the sori this curious plant closely resembles A. Galeotlianum, but the stem is 

 quite simple, so far as we know, the form of the pinnules quite different, and the habit 

 is very peculiar. 



14. A. sinuosum, Gard. ; st. 4-8 in. 1, erect, naked, polished, nearly black ; 

 fr. with a long terminal central pinna, 2-3 in. br., and 1 or 2 pairs of erecto- 



patent branches at the base ; pinnl. 1^-in. br., -|-| in. deep, the lower line obliquely 

 decurved, the upper irregularly rounded and deeply lobed, the lobes again 

 crenate, the lower ones on stalks J-^ in. 1. ; texture papyraceo-herbaceous ; 

 rachis and surfaces naked ; sori obreniform, placed in rounded sinuses of the 

 crenations of the lobes. Uk. Sp. 2. p. 35. Ic. PL t. 504. 



Hab. Brazil, Gardner, 3552, Burchell, 6752 ; and a similar plant has been gathered by 

 Prof. Jameson near Guyaquil. This resembles most A. Capillus-veneris in the segments. 

 They come generally about halfway between the flabellato-cuneate and truly dimidiate 

 types of form, so that its position may be said to be about midway between that species 

 and A . trapeaiforme. 



15. A. diaphanum, Blume ; st. 4-8 in. 1., slender, erect, blackish, polished ; 

 fr. 4-8 in. 1., 1 in. br., simply pinnate or with 1 to 3 branches at the base, which 



are sometimes nearly as large as the terminal one ; pinnl. % in. br., in. deep, 

 the lower line rather 'decurved, the upper nearly parallel with it, crenate like 

 the blunt outer edge ; texture thin ; rachis naked, surfaces nearly so ; sori 

 obversely reniform, numerous, but not contiguous, placed in the sinuses of the 

 upper and outer edge. Hk. Sp. 2. p. 11. t. 80. C. A. affine, Hk. Sp. 2. p. 32. 

 non Willd. A. setulosum, J. Sm. 



Hab. S. E. China, Aneiteum, Java, Fiji, New Caledonia, Norfolk Island, N. Zealand, N. S. 

 Wales. This is nearest the next species, but is much less branched, and the pinnules are 

 thinner in texture. In habit it shows an approximation towards the pedate group. It 

 is not unlikely that A. erectum, Kunze (Bot. Zeit. 1848, p. 211), is the same. 



16. A. affine, Willd. ; st. 6-9 in. 1., erect, polished, blackish, glossy ; fr. with a 

 terminal central pinna, 4-6 in. 1., 1-1^ in. br., and several smaller erecto-patent 

 lateral ones, the lowest of which are again branched ; pinnl. -f in. 1., J in. deep, 

 dimidiate, the lower edge straight, the upper nearly parallel with it, crenate like 

 the oblique or bluntly rounded outer edge ; texture subcoriaceous ; rachis and 

 surfaces quite naked, the latter yery glaucous ; sori numerous, roundish, placed 

 in small hollows round the upper and outer edge. A. Cunninghami, Hk. Sp. 2. 

 p. 52. t. 86. A. (not A. affine, HL, which is A. diaphanum, Blume). 



Hab. New Zealand. A somewhat variable plant in branching and the size of the 

 segments, but not likely to be copfused with any other, especially as it is known only in 

 New Zealand. 



17. A. nigrescens, Fee ; st. 6-12 in. 1., strong, erect, naked, blackish, polished ; 

 fr. 6-9 in. 1., 4-6 in. br., with a terminal pinna and several lateral ones on each 

 side, the lowest of which are again branched ; segm. about \ in. 1., in. br., 

 dimidiate, the upper and lower margins nearly parallel, the point bluntly rounded, 

 the upper and outer edges finely toothed ; texture coriaceous ; rachis nearly 

 naked, polished, surfaces naked ; sori in transversely oblong patches along the 

 upper edge. Fee, Icon. t. 11. f. 2. 



Hab. Guadeloupe, L'Herminier. Probably this should be regarded as a subglabrons 

 state of A. cristatum. From all the species placed near, it may be known by its coriaceous 

 and much smaller segments. 



