218 
THE FERNS OF SOUTH AFRICA 
six to eight pairs, close and overlapping; the lower not larger 
than the upper side ; deltoid, with a distinct green rachis, 
bearing three to four pairs of pinnules, the upper cuneate 
three-lobed, and the lower divided to the mid-rib into five 
to seven ovate or three-lobed segments, which are one line 
long, and not more than a half line broad when single. Sori 
mostly confined to the triangular part of the lobes, continuous, 
comparatively broad, and almost meeting above ; same in 
texture as the frond. Kuhn makes this synonymous with 
Pellaea deltoidea , but Baker maintains both species. Both 
are found in Namaqualand, but the specimens I have seen are 
very distinct from one another and from everything else. 
Baker mentions its resemblance to the northern Cryptogramme 
crispa Br., which, however, has the fertile and barren fronds 
different, while here they are alike. Specimens of D. deltoidea , 
D. robust a, and Pellaea namaquensis are usually fragmentary 
and often unfit for identification between these three. 
Doryopteris robusta (Kze). Diels, Nat. Pft. i 4 , 269, 1899; C. Chr. 
Index , 245. 
Pellaea robusta . Hk. Sp. 2, 147; Hk. and Bkr, Syn. Fit. 149; Sim, 
Ferns of S. Apr ., 1st ed., 95. 
Cryptogramme robusta. Pappe and Rawson, 32. 
Allosorus robustus. Kunze, Linnaea , 10, 502. 
West. — Between rocks near Goedeman’s Kraal, Namaqualand (Drege); 
common throughout Namaqualand (Lady Barkly, Bolus); I’aus, 
2300 ft (R. Schl. 11218). 
Genus 28. Adiantopsis Fee. 
Involucres distinct, roundish, confined to the apex of a 
single veinlet. A small genus of 14 species, formerly included 
in Cheilanthes, and having the same habit and nature of 
habitat. 
1 14. Adiantopsis capensis (Thbg) Fee. 
Plate 106. Fig. 1. Nat. size. B Pinna, enlarged. C Fertile margin, 
much enlarged. 
Crown tufted, procumbent, densely paleaceous, with long 
rusty scales; frond herbaceous, glabrous, two-pinnatifid, ovate 
