Gen. XX, Species 4. Gen. XXIII, Species 2. 
4. N. molle. Fronds 8 — 18 inches high, dark green, pinnate; 
erminal pinna much elongated; pinnae almost at right angles to the 
achis, deeply notched ; sori numerous all round the lobes and 
xtending to the costa. Rotomahana. 
5. Specimens have been sent home of another Nephr odium, 
Iso found near the Hot Springs, which has not yet received a 
pecific name ; it differs from the latter chiefly, in having its pinnae 
ending upwards, and in the position of the son, which are confined 
d the lobes, and do not extend to the costa. 
Gen. XXI. — Nephrolepis. 
1. The species found by Dr. Hochstetter is pinnate, about 1 
jot long ; pinnae roundish with toothed margins ; rachis with scat- 
jred, scaly hairs. He thus describes its habitat : “From the same 
mge,” (the Pairoa, on the eastern side of the Waikato not far from 
'aupo,) “the warm-water river Waikite takes its origin. On both 
.des are deep pools of boiling water, on the margins of which we 
iscovered most beautiful ferns, hitherto unknown. These ferns 
re remarkable not only for their elegance, but also from the 
eculiar circumstances under which they exist, as they are always 
irrounded by an atmosphere of steam.” Lecture on the Geology 
f the Province of Auckland, New Zealand. 
Gen. XXII. — Goniopteris. 
1. G. pennigera. A very tall, handsome, pinnate fern ; 2 — 3 
;et high ; quite smooth ; pinnae long, deeply notched ; sori, 
umerous, small and generally black ; this fern often acquires a stout, 
oody caudex, 6 — 8 inches high, covered with the bases of old stipes, 
ommon, in shady places as far south as Akaroa. 
Gen. XXIII. — Polypodium. 
1. P. rugulosum. Whole plant more or less covered with a 
iddish down ; a span to 3 feet high. Frond bi-tri-quadri-pin- 
ate, more or less membranous, pinnae very variable in length ; 
innules joined by a broad base, lobed ; stipes and rachis generally 
ark brown, slender, rough to the touch ; often hairy ; rhizome 
gid, woody, creeping, and scaly, sending up distant fronds, 
'hroughout the Islands. 
2. P. sylvaticum. Exactly resembling Polystichum vesti- 
im in growth, form, and texture ; and only differing from it in the 
eneric characteristic, — naked sori. Northern Island ; mountain- 
us woods, East Coast and Interior. Port Nicholson. 
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