12 
J. BACKHOUSE AND SON. 
* H, scabrum (A. Kich.) Avery beautiful fern, 12 to 18 inches 
high, from New Zealand, with three or four times divided 
rather hairy fronds, on erect round stalks, which are rough 
with pale chaffy hairs. 40° to 60°. 
y sericeum (Sw.) A distinct and very fine species, clothing the 
faces of rocks in the West Indies, with sheets of twice 
divided (pinnate) tawny and densely silky pendent fronds, 
1 to 2 feet long, and 2 to 3 inches wide. Dislikes being 
watered on the fronds. 50° to 70°. 
Tunbridgense (Sm.) A well known fern, forming dense 
carpets on moist rocks in many parts of Great Britain and 
Deland. Fronds erect, flat, twice divided ( pinnate ) very 
delicate, serrated at the edges. Stalk wiry. Involucres 
nearly round, toothed at the top. Dislikes water on the 
fronds, except by condensation. 40° to 60°. 
yc Wilsoni (Hook.) Another British species, closely allied to 
the preceding, but differing in its more attenuated fronds, 
and pinnce curved to one side, as well as in its inversely 
pear shaped involucres. 30° to 50° 
valvatum (Hook and Grrev.) A charming species from the 
West Indies, with ovate, attenuated, nearly smooth dark 
green fronds, 6 to 12 inches long, thrice divided (tri- 
pinnatifid) and everywhere beautifully undulated. Stalks 
black, wiry ; hairy when young. 50° to 65°. 
