Descriptions of the Species. 
37 
much mixed in herbaria ; and A. varians, Hk. and Gr. , is 
frequently confused with them. 
This species is widely distributed in one or other of its forms 
through the tropics, and we find the forms growing intermingled, 
without any localisation, though Buchanan points out that in Natal 
A. lunulatum and A. brachyotus grow from the coast to 3000 feet 
alt., while A. harpeodes and A. gracile range from 2000 to 5000 
feet alt. 
Varieties are as under. 
Var. Ot . lunulatum. (Sw.) Sim. 
Plate LXIV. Natural size. b. Pinnule. 
Pinnae straight and entire along the lower and inner edges, 
rounded at the point, not deeply toothed but crenate, a half to 
three-quarter-inch long, two lines broad. Frond two to three feet 
long, sometimes proliferous. 
A. erectum, Bory, var. lunulatum. Sim in Kaff. Ferns, 40. 
A. lunulatum. Swartz. Schrad. Jour.; Schl. Adum. 27 ; Kze. Linnsea, 
10.514 ; Pappe and Rawson, 19; Wood, Natal Ferns, 20; Hk. and 
Bkr. Syn. Fil. 202, in part ; Kuhn, Fil. Afr. 105. 
A. falcatum. Thunb. Prod. 172 ; FI. Cap. 734. 
Frequent throughout the colony. 
West. — Knysna. 
East. — Uitenhage (E. and Z.), Kat River (Drege), Grahamstown 
(Holland), Van Staaden’s River (Browning). 
Kaff. — Frequent throughout the forest, Komgha (Flanagan). 
Natal. — Coast to Umpumulo and Maritzburg (Buchanan). 
Var. / 3 . minor. Mihi. 
Plate LXII. Fig. 2. Natural size. b. Pinna. 
Pinnae as in var. lunulatum, but smaller. Frond six to nine 
inches high, generally proliferous. Found at Dohne Hill, 
Kaffraria. 
