Lilices— Trichomanes. 553 
14. TRICHOMANES. 
This genus differs from the last in its cup-shaped involucre, 
and its long filiform receptacle. About eighty species are found 
in temperate and tropical countries. The derivation of the 
name is variously explained, but all of the explanations are 
open to doubt. 
1. 2. vudicans. Fronds 6 to 12 inches high, pellucid, bi- 
or tri-pinnatifid, rachis winged. Stipes 2 to 6 inches, stout and 
wiry. This is very rare, and the only native species. It is 
found in Wales, and in a few localities in Ireland, in the 
vicinity of streams or waterfalls. 
The members of this and the foregoing genus are not suitable 
for open-air culture except under quite peculiar conditions, 
Sus-Orver IIT.—_Osmtinder. 
Fronds coriaceous or membranous, circinnate in vernation. 
Spore-cases clustered in a branched panicle terminating the 
frond, 2-valved, opening across the apex, and furnished with 
a short horizontal ring. 
15. OSMUNDA. 
Rhizomes tuberous, densely branched, clothed with fibres. 
Fronds coriaceous, tufted, once or twice pinnate. There are 
six species from various temperate and tropical regions. Named 
after a Celtic deity. 
1. O. regalis. Fern-Royal.—This is the noblest of our native 
Ferns, sometimes attaining a height of 10 feet. The fronds 
are bipinnate, branched, and fertile at the top. It is found in 
damp, boggy woods in this country, and is widely diffused in 
the north temperate zone. 
O. Claytoniana, syn. O. interriipta, is a dwarf species about 
18 inches or 2 feet high, clothed with a ferruginous tomentum 
when young, with the barren and fertile pinne intermixed ; 
and O. cinnamomesa has distinct fertile and sterile fronds, the 
former much the smaller. Both are hardy, and natives of 
North America, &c. 
Sus-Orper IV.—Ophiogl6éssex. 
Fronds straight in vernation. Spore-cases large, 2-valved, 
destitute of a ring, arranged in spikes or panicles. 
