very local species,—only four Welsh habitats being known. 
The fronds are of two kinds, barren and fertile; the barren appear in May, and the fertile in 
June, and both die down on the approach of winter. 
The roots are black and fibrous; the rhizome is creeping, nearly smooth, and of a dark colour. 
The stem is very long and slender, hut thicker in the fertile fronds. 
The barren fronds are from one to two feet in length, the fertile often attain the height of four 
feet; both are pinnate. 
The fertile fronds are much less abundant than the barren ones. 
The seed is produced in circular clusters on the under margin of the lobes. 
pMtet 
It is found only in bogs and marshy places. The localities are Llanberis, in Caernarvonshire; 
Llwydeard lake, Pentraeth, in Anglesea; Singleton bog, in Glamorganshire; and Pennalle bog, 
near Tenby, Pembrokeshire. 
Vmtm. 
It is subject to no variation. 
fylkxt 
This species thrives well in cultivation. The soil should be composed of peat and decayed leaf- 
mould ; the rhizome should be planted near the surface of the soil; too much moisture cannot be 
supplied, and it should be allowed to stagnate. 
