CATALOGUE OF FERNS. 
21 
9. G. prolifera, Presl. Meniscium proliferum, Sw. — East In- 
dies. 
10. G. vivipara, J. Sm. Polypodium viviparum, Radd . Fit. 
Bras. t. 32. Polypodium proliferum, Kaulf. Gonio- 
pteris fraxinifolia, Presl ( non Polypodium fraxinifolium, 
Jacq.) . — Brazil. 
11. G. peimigera, J. Sm. Polypodium pennigerum, Forst . — 
New Zealand. 
29. MEHISCIUM, Schreb. 
Vernation fasciculate and decumbent, or uniserial and sarmen- 
tose. Fronds pinnate, rarely simple. Primary veins costseform, 
pinnate; each opposite pair of venules angularly or arcuately 
anastomosing and sporangiferous, producing from their junction 
an excurrent, free, sterile veinlet. Sporangiferous receptacles 
medial, linear, continued across the junction of the venules, form- 
ing arcuate, transverse sori. Sporangia in some species pilose. 
1. M. simplex^ HooJc. Bond. Journ. Bot. v. 1. t. 11. — Hong- 
kong. 
2. M. palustre, Radd. Fit. Bras. t. 20 ; HooJc. Gen. Fit. t. 40. 
— Brazil. 
3. M. dentatum, Presl. — Brazil. 
4. M. reticulatum, Sw.; SchJc. Fil. t. 5. Polypodium reticu- 
latum, L. — Tropical America. 
30. VITTARSA, Sm. 
(Yittaria et Tseniopsis, J. Sm. Gen. Fil.) 
Vernation uniserial, contiguous ; sarmentum short, furnished 
with hyaline squamae. Fronds simple, linear, smooth, rigid or 
flaccid and pendulous, from a few inches to 2-3 feet in length. 
Veins simple, forming an acute angle with the midrib, their 
apices prolonged into a transverse marginal vein, which becomes 
the sporangiferous receptacle. Sporangia seated in a groove or 
