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GROUP I; GENUS I; SPECIES I. 
ADIANTUM CAPILLUS-VENERIS. (English Maiden-hair.) 
Plate I. 
Fronds. Tri- or bi-pinnate, deltoid in shape; nearly 
all fertile. Pinna; triangular and alternate. 
Pinnules usually fan-shaped, but very irre¬ 
gular ; stalked and lobed. Edges of barren 
lobes serrated ; of fertile lobes reflexed, form¬ 
ing the indusium. Rhizoma small and black 
like fine wire. Rachis and stipes a glossy 
black, but reddish when young. Stipes about 
half the length of the entire frond, and 
slightly scaly at base. 
Growth. Lax and drooping; rachis somewhat re¬ 
flexed. 
Height. From six to twelve inches. 
. Colour. Bright green. 
Habitats. Warm, sheltered, moist rocks. More fre¬ 
quent by the coast. A rare fern except on 
the west coast of Ireland. 
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GROUP I; GENUS II. 
ALLOSORUS. 
Sori. Growing from the upper part of the venules 
in oblong clusters which ultimately become 
c 
