136 
THE FERNS OF SOUTH AFRICA 
ttt Frond pinnate (or two-pinnate in vars. of 64 and 71), lanceolate 
or ovate-lanceolate, more than three inches broad. 
64. A. protensum. Frond two to five feet long, two to four inches 
broad ; pinnae numerous, cut halfway to the mid-rib into two- 
toothed blunt lobes. Rachis and mid-rib pubescent. 
Var. bi-pinnatifidum. Pinnae cut to the mid-rib into overlapping, 
rounded, serrate pinnules ; plant stronger. 
65. A. laetum. Pinnae one and a half inches long, half-inch broad, 
bluntly toothed, obtuse ; frond two feet long, two to four inches 
broad. 
66. A. anisophyllurn. Frond herbaceous ; pinnae twelve to twenty 
pairs, two to four inches long, one-half to one inch broad, bluntly 
toothed throughout. Sori oblong, swollen, oblique, reaching half- 
way to the edge. 
67. A. unilaterale. Frond as in A. anisophyllurn , but pinnae much 
cut away at base on lower side. 
68. A. prionitis. Frond herbaceous ; pinnae eight to fourteen pairs, 
stalked, six inches long, one to one and a half inches broad, sharply 
toothed throughout. Sori linear, reaching to near the edge. 
69. A. serra,\2x. 7 iatale?ise. Frond coriaceous; pinnae fifteen to 
twenty pairs, three to five inches long, one-half to three-quarter 
inch broad, very much attenuated, cut halfway into toothed lobes. 
Sori close to the mid-rib, and almost parallel with it. 
70. A. adia?itoides. Somewhat similar, but sori reaching nearly to 
the edge. 
71. A. gemmiferum. Frond coriaceous, simply pinnate ; pinnae six 
to twelve pairs, four to six inches long, one to one and a quarter 
inches broad, pointed, entire or crenate, or bluntly toothed. Sori 
oblique, linear, reaching halfway to the edge. 
Var. /3 . fiexuosum. Pinnae cut halfway, or at the base more, into 
cuneate, flabellate, bluntly toothed, overlapping lobes. Sori 
irregular, or reaching the sinuses. 
Var. y. discolor. Pinnae cut throughout to a widely margined 
mid-rib, into distant, cuneate, bifid, or flabellate pinnules. 
Sori marginal. 
t+tt Fronds tapering from a wide base, coriaceous, two to three- 
pinnate ; pinnules linear or cuneate ; venation sub-flabellate. 
72. A. Rawsoni. Frond two-pinnatifid, three inches long, one and 
a half inches broad, pinnules and upper pinnae roundly cuneate, 
crenate. Sori central on the pinnules, short. 
