Descriptions of the Species. 
149 
Europe, Asia, Africa, and African Islands. In South Africa 
local and not common ; growing on rocky banks. 
West. — Table Mountain, Grootvader’s Bosch (Rawson), Devil’s Mountain, 
Dutoitskloof (Kunze). 
East. — Grahamstown (Holland), Graaffreinet (Bolus, 206), Winterhock 
(M‘Lea), Boschberg (MacOwan). 
Kaff. — Thabase (Baur), Komgha (Flanagan), Dohne, Cathcart, Alice. 
Natal. — Midland and upper districts (Wood), Umpumulo, Greytown, 
Maritzburg, Mooi River, Riet Vlei (Buchanan). 
Var. / 3 . obtusum. (Willd.) 
Plate LXIII. Fig. 2. b. Pinnule. 
Generally a stronger growing form than the type, rather more 
cut, with narrow, spathulate, and lobed pinnules, and with three to 
five sharp, but not divergent, equal teeth on each lobe. This form 
approaches A. solidum, Kze., which may also be a more altered 
form of A. Adiantum-nigrum, as another further grade appears in 
A. acutum, Bory. 
In the fine series of European specimens of this group in 
Herb. Gub., the more rounded form appears as A. Adiantum- 
nigrum, L., and our var. obtusum as A. serpentinae, Tausch, but 
A. solidum is not represented. 
Schlechtendal gives two forms of A. Adiantum-nigrum, the one 
representing our type, and the other is described as being 
A. acutum, Bory, but the figures are both of the type, and almost 
alike except in size. 
A. Adiantum-nigrum, L., var. 7. obtusum. Hk. and Bkr. Syn. Fil. 216. 
A. obtusum. Willd. 
A. serpentina;. Tausch, Jour, of Botany, May 1864. 
Moore also mentions as synonyms here — 
A. Adiantum-nigrum, capense, of Schimp. Hb. Abys. 
A. Fosteri. Sadi. 
