KERNS OF NATAX. 
Gen. 19. — Cvstopteris, Bernli. (Bladder Fern.) 
iSori globose, placed on the back of the veins, invol. membranaceous suborbicular, 
inserted by its broad base under the sorus, which, at the beginning, it covers 
like a hood. Fronds small, two or three times divided, thin in texture, 
veins free. 
17. C. f rag ills, Bernh. ; st. 2-4 in. 1., fr. 4-8 in. 1., 1) to 2 in. br., ovate 
anceolate, tripinnatifid ; main racliis slightly winged above ; largest pinna) 1-11 
n. 1., a-i in. br., lanceolate deltoid ; pinnl. oblong-rhomboidal ; cut down to a 
iroad central space into bluntly or sharply-toothed lobes ; texture herbaceous ; 
ori 2-12 to a pinnule. Hab. : — In moist parts of bush ; from G-reytown to 
Irakensberg. 
Gen. 20. — Lindsaya, Dryand. 
Sori and involucre continuous, parallel to margin. 
18. L. lanceolaia, Lab. ; rhizome creeping, stout, paleaceous ; st. 6-9 in. 1., 
dry, flexuose ; fr. 6-12 in. 1., 3-4 in. br., with a linear-lanceolate simple or 
linnatifid point, simply pinnate below ; pinna) usually in numerous pahs, all 
talked, 11-6 in. 1., (-1 in. br., varying from linear-acuminate to lanceolate in 
hape, only the sterile ones, which are broader than the others, a little toothed ; 
exture herbaceous ; veins copiously anastomosing ; sori in a continuous marginal 
ne. (Lindsaya ensifolia, Sw.) Ilab. : — Streamlets ; near Coedmore ; Kirkly 
r ale, near Umvoti ; Attercliffe ; Swamp forest at the head of Natal Bay. 
Gen. 21. — Adianttjm, L. (Maidenhair Fern.) 
ori marginal, globose kidney-shaped, oblong or linear ; distinct, or confluent and 
continuous. Involucre corresponding to sori, formed of reflexed margin of 
frond, and bearing the capsules beneath. 
19. A. Cap illus - Veneris, L. (Common Maidenhair), st. suberect, rather 
tender, 4-9 in. 1., polished, blackish, naked; fr. with a short terminal and 
amorous erecto-patent lateral branches on each side, the lowest slightly branched 
.gain ; segm. I to 1 in. br., the base cuneate, the outer edge rounded, deeply 
bed from the circumference in the direction of the centre, and the lobes again 
1 untly crenated, lowest petioles \ in. 1., texture pellucido-herbaceous, racliis and 
0th surfaces naked ; sori roundish or obreniform, placed in roundish sinuses of 
lae crenations. Hab.: — Ravines at Krantzkloof ; Iuanda; Yerulam ; Nonoti; 
imsuudusi ; Karkloof Falls ; head of Natal Bay ; near Bishopstowe ; Falls 
' Uinbilo. 
.20. A. JEtldopicum, L. ; st. 6-8 in. 1., rather slender, erect, dark chcsnut-brown, 
dished, naked ; fr. 12-18 in. 1., 6-9 in. br., deltoid in general outline, tri or 
ladripinnate ; lower pinnl. 3-4 in. I, 2-3 in. br., deltoid, ultimate segm. in. 
-ross, i in. deep, suborbicular, straight or subcuncate or rounded at the base, 
e upper part broadly, not deeply lobed ; texture thinly pellucido-herbaceous, 
ehis and surfaces naked ; sori in several roundish or transversely oblong patches 
