Descriptions of the Species. 1 1 3 
opposite, lanceolate, sessile ; in young plants lobed or pinnatifid, 
but in mature plants cut into distinct, lanceolate, or ovate pinnules, 
which have a wide adnate base, and are often more or less irregu- 
larly lobed or pinnatifid below, or on lower pinnae usually again 
fully pinnate. Barren frond, and barren tips of fertile pinnules, 
slightly crenate, but not toothed. Texture thick, but brittle. 
Involucre continuous, narrow ; veins sometimes anastomosing 
freely, especially on the young plants ; often quite free in old 
fertile plants, and Burchell’s 7420, as sent from Kew to Herb. 
Gub., has all the veins free. This species is easily recognised by 
its spreading rhizome, glaucous colour, and entire (i.e. not toothed) 
pinnules, but the fronds vary a good deal in cutting. 
Pteris incisa. Thunberg Prod. 17 1 ; FI. cap. 733 ; Schl. Adum. 44, Tab. 
25 ; Kze. Linnsea, 10.44 ; Pappe and Rawson, 26 ; Kuhn, Fil. Afr. 82; 
Hk. and Bkr. Syn. Fil. 172. 
Pteris vespertionalis. Labill. 
Litobrochia incisa. Presl. 
Widely scattered in the tropics ; growing in damp ground. 
West. — Hangklip (Drege), Campsbay (Ecklon), Table Mountain at 
Newlands, Wynberg, &c., Hottentot’s Holland, Swellendam (Holland), 
Zuurbraak, Swellendam (Burchell, 7240). 
East. — Tzitzi-kamma. 
Natal. — Noodsberg, Kranzkloof, Inanda (M‘Ken), Umpumulo (Buchanan). 
58. Pteris Aquilina. Linn. 
Plate XLV 1 II. Frond and rhizome much reduced, b. Fertile pinnule, nat. 
size. c. Pinnules from young seedling plant, nat. size. 
Rhizome subterranean, stout, creeping, several yards long, 
slightly branched, and with few roots. Frond 3-pinnate, one to 
three feet long, one to two feet broad, on a stout, naked stipe one 
foot long. Pinnae in opposite pairs, sessile, all alike in shape, 
tapering from a wide base, the lowest sometimes longest, but more 
frequently rather shorter than the next pair. Upper pinnae 
pinnatifid or simply pinnate, generally cut almost to the rachis into 
close, linear, bluntly pointed pinnules, fertile throughout ; lower 
pinnae similar at the point, but towards the base having distinct 
