6 
Sect. 2. Lonchitidece. Pr. Sori globose or linear, occu- 
pying sinus of teeth and segments. Involucre semi-lunate 
or linear, marginal. 
Gen. 1 . — Hypolepis. Bernh. Sori punctiform, sub-globose. 
Veins simple or forked. 
Gen. 2. — Lonchitis. L. Nonlinear, semi-lunate. Veins 
anastomosing*. 
GROUP 2, having no involucre. Sori naked. 
tribe 7. 
Vittariacece . Pr. Sori sunk in margin, linear, or globose. 
Rhizome creeping. 
Gen. 1. — Vittaria. Sm. Sori linear. Frond simple, 
linear. 
Prosaptia, Pr., (a doubtful genus) is not represented in South 
Africa. 
TRIBE 8. 
Polypodiacece . Pr. Sori globose on apex or back of 
veins in disc of frond; seldom confluent. Receptacle dot- 
shaped. Rhizome creeping, seldom sub-globose. 
Sect. 1. Struthiopteridece. Pr. Fertile fronds contracted. 
This tribe, containing only one genus, Struthiopteris, Willd., is 
not represented in South Africa. 
Sect. 2. Polypodiece. Pr. Margin of frond uniform with 
disc, flat. Fronds often simple or digitate. 
Gen. 1 . — Polypodium. Lin. Sori at end of simple or 
forked veins, or on mid-veins or veinlets. 
Gen. 2 .— Goniopteris. Pr. Sori on mid-veins ; first four 
opposite veins anastomosing in acute angled arch. 
Gen. 3. — Marginaria . Bory. Sori 1-3 serial, at end of 
primary, or secondary, veinlets, in hexagonal maculae. 
Gen. 4. — Pleopeltis. Humboldt and Bonpland. Sori 
large, serial, veinlets anastomosing, the middle maculae con- 
taining two or three secondary veinlets, making an oblong 
macula, bearing sorus at the end. Pedicellated scales in 
soru s . 
Gen. 5. — Phymatodes. Pr. Veins anastomosing, secon- 
dary veinlets clubbed. Sori at end of veinlets. 
