54 
CATALOGUE OP PEENS. 
1. F. prolifer a, HooTc. Gen . Fil. t. 53 B. Aspidium proli- 
ferum, Hoolc. et Grev. Jc. Fil. t. 96. — Jamaica. 
79. NEPHEODIUM ; Schott. 
Vernation fasciculate, decumbent or erect, rarely uniserial and 
sarmentose. Fronds 1-6 feet high, simple or pinnate ; pinnae 
entire, sinuose or pinnatifid. Veins costseform, pinnate ; the 
lower pair of venules only, or more, or the whole, angularly 
anastomosing, producing from their junction an excurrent, ana- 
stomosing, sterile veinlet. Sporangia medial or sub-terminal. 
Sori round. Indusium reniform, rarely nearly orbicular. 
1. Bff. unitnm, R. Br. Aspidium unitum, Schk. Fit. t. 33 B . — 
Tropics. 
2. PT. pteroides, J. Sm. Polypodium pteroides, Betz. Aspi- 
dium pteroides, Sw. Aspidium terminans, Wall. Ne- 
phrodium terminans, J \ Sm. Cat. Fil. Hort. Few. 1856. — 
East Indies. 
3. N. molle, B. Br. ; Schott , Gen. Fil. t. 14 ; Hook. Gen. Fil. 
t. 48 B. — Tropics, very general. 
4. N. vemistum, B. Hew. — Jamaica. 
5. N. articulatum, J. Sm. — Ceylon. 
6. W. Hookeri, J. Sm. Aspidium Hookeri, Wall.- — East Indies. 
7. N. patens, J. Sm. — Demerara. 
8. N, truncatum, J. Sm. Aspidium truncatum, Gaud, in 
Freycinetfs Voy. t. 10.— -Sandwich Islands. 
80. MESOCHLiENA, B. Br. 
(Sphserostephanos, J. Sm.) 
Vernation fasciculate, erect. Fronds 2-4 feet high, bipinna- 
tifid. Veins costaeform, pinnate ; the lower pair of venules ana- 
stomosing, the others free, parallel. Sporangiferous receptacles 
medial, elongated. Sori oblong-linear, decussate. Indusium 
linear, attached longitudinally on the centre of the receptacle, 
having sporangia in its axis on each side ; margins free. 
