36 BRITISH FERNS. — SUB-ORDER II. TRIBE 8. 
and the West Indies. In Turner’s “ Herball,” in 1568, it is called 
“ English May den’s Heare.” Under cultivation it succeeds best 
in sandy loam with broken stones and a little decayed leaf- 
mould. 
Siem dark chestnut brown ; fronds linear, pinnate, and deep 
green. A pretty dwarf species. 
Some walls in Monmouthshire are literally covered with this 
fern. 
Varieties. 
1. acrocladon, Lowe. Found in Owsnip Gill, Swaledale, in 
1866, by Mr. R. C. Brown, of Nottingham. Pinnae very remote, 
only seven or eight pairs to within an inch of the tip of the frond, 
and there branching and rebranching so as to form a capitate head 
2 inches broad. Pinnae not crested. Length, 6 inches. 
2. Claphami, Lowe (incisum, Moore). 
Discovered at Smeerset, near Settle, by 
Mr. A. Clapham and Mr. J. Tathem. The 
most beautiful variety yet found. An in- 
cisum, but unlike the incisum of Moore. 
Pinnae sometimes three-quarters of an inch 
in length, and as much across the base. 
The basal lobes cut nearly to the costa ; 
it is serrate as well as lobate. The upper 
lobes are almost as much cut. A sterile 
very plumose form. Length, 7 inches. 
3. confluens, Moore (Mr. Stabler’s con- 
fluent hybrid not included). Found many 
years ago near Whitby, by the late Mr. 
W. Wilison ; and in 1875, ' n the South of 
Ireland, by Mr. P. Niell Fraser, of Edin- 
burgh. Pinnae confluent in the upper half 
of the frond. Length, 4 inches. 
4. congestion, O' Kelly. Found in County 
Clare by Mr. O’Kelly. An interesting con- 
gested bushy form, 4Xof inches. 
5. cornutum, Lowe (cornuto-ramosum, 
Lowe). Found near the Clifton Suspension 
Bridge by Mr. Edwards. Rachis flexuose, branching in the middle 
of the frond, where it is horned. Pinnae lax, some absent. 
Length 6 inches. 
6. corymbiferum, Lowe. Found in Owsnip Gill, by Mr. R. C. 
Brown, and Crossthwaite, by Mr. J. M. Barnes. Normal, except at 
the ap.x, where it branches into a wide capitate, foliose head. 
Segments confluent. 
'/• cristatum, Moore. Found in Lancashire, Cumberland, West- 
morland, Devonshire, and near Ballyvaughan. A handsome, not 
uncommon fern. The pinnules arc from elongate to triangular, 
and are cut almost to the base. In some forms the pinna; are 
depauperate. Length, 6 inches. 
8. dendroideum, Wollaston. Found, in 1872, in Westmoreland, 
Fig. 10. 
Asplenium trichomanes, var. 
Claphami (incised). 
