CULTIVATION IN HOTHOUSES. 
71 
The sori are placed in little spikes of overlapping scales 
somewhat resembling the cones of the Ly copods. 
Lygodium Japonicum. Japanese Lygodium. Fronds 
branched , elegant, segments of the fertile ones con- 
tracted. Does not climb high, and requires great heat. 
A native of China and Japan. 
Lygodium flexuosum. Climbing Lygodium . Stems 
prolonged to a great length ; fronds attached to it in 
pairs opposite one another, some inches intervening be- 
tween each pair; the fronds about an inch long on a 
foot-stalk of the same length. This species climbs 
freely around the boles of trees in its native jungles in 
the East Indies, and it is a very ornamental plant in a 
hothouse if trained round a pillar. 
Lygodium palmatum , Palmate Lygodium. Very slen- 
der and graceful ; barren fronds hand-shaped, cut into 
four or five segments like Passion-flower leaves ; fertile 
fronds on the upper part of the rachis smaller, more 
divided; the segments much contracted; the whole 
branch measures from 1 to 3 feet ; it is of a brilliant 
green colour, and does not require great heat to bring it 
to perfection. We have received beautiful fronds from 
the colony of British Honduras. It grows in the 
warmer parts of North America. 
Trichomanes venosum. Veined Bristle-fern. A small 
species ; pinnate leaflets narrow and lobed. 
Trichomanes Bancroftii. Bancroft’s Bristle-fern. Pin- 
nate, minute ; leaflets broad, crowded, sessile. 
Trichomanes crispum. Brittle Bristle-fern. A larger 
species. Fronds pinnate ; leaflets narrow, ovate. 
Trichomanes muscoides. Moss-like Bristle -fern. Mi- 
nute. Fronds lobed, but not pinnate. 
Trichomanes sinuosum. Waved Bristle-fern. Fronds 
pinnatifid, minute. A rare tropical species. 
