42 BRITISH FERNS. — SUB-ORDER II. TRIBE 8. 
10. incisum, Moore. Found at Great Orme’s Head by Mr. A. 
Stowe, and near Llangollen by the Rev. T. Rooper. An elegant 
variety, having the pinnae and apex of the frond truncate (or blunt- 
ended). The lobes deeply cut along the anterior margin. Length 
6 to 9 inches. Pinnae only half an inch long. 
11. interruptum, Moore. History doubtful. Remarkable for the 
varied length of the pinnae, some projecting far beyond the others 
causing the outline to be irregular. 
12. laxum, Lowe. Found in the Burren district, County Clare, 
by Mr. F. J. Foot, of the Geological Survey of Ireland. It is not 
unlike the Asplenium latum (a South European form of A. 
marinum). Very lax, especially on the lower portion of the frond. 
Length 2 to 3 feet. 
13. multifurcatum, Clapham. Raised from spores in i860 by 
Mr. Clapham. Lower pinnae very short and depauperate. Frond 
terminating in a rounded capitate head. 
14. multipinnatum, Appleby. Stated to have been found in the 
Azores. A most beautiful ramose variety growing more or less 
horizontally. Fronds equal in width throughout, terminating 
in a branching apex. Pinnae broad and the segments deeply 
cut. 
*15. optandum, Loiue. Raised by myself. An interesting 
variety having the lower lobe of the pinnules overlapping. Length 
5 inches (identical with admirabile , Lowe). 
16. parallelum, Moore. A distinct form found in Guernsey by 
M. Boistel. Fronds 3 feet in length. Pinnae 2 to 2b inches long 
and less than § inch wide, and nearly parallel sided. 
17. plumosum, Wollaston. Found in Guernsey by the late Mr. 
C. Jackson. A magnificent plumose variety in the style of Thomp- 
sonae, but every part of the frond is double the size of that variety. 
The ends of the pinnae are caudate, and the pinnules divided nearly 
to the base. Length, from 1 to 2 feet. 
18. Pricae, Lowe (plumosum Price, Jones. Found near Ilfra- 
combe by Miss Price. A beautiful foliose form, not so much 
divided as plumosum. Frond widest at the base, as also the 
pinnae. Basal lobes large and deeply cut. 7x4 inches. 
*19. ramo-capitatum, Lowe. Raised by myself. Branched and 
capitate. 
20. ramo-trapeziforme, Clapham. Found in 1857 at Burniston, 
near Scarborough, by Mr. A. Clapham. Dwarf. Pinnae trapezi- 
form, and variable in size and shape. Pinnae branching and the 
tips dilate. A somewhat similar form was raised by myself. 
21. ramosum, Wollaston. Found in 1850, in Dorsetshire, by 
Mr. G. B. Wollaston. Distinct dwarf variety, with short wide 
pinnae, having a broadly crenate margin. Twin-fronded, either 
branching in the stipes or in the rachis. 
22. subpinnatum, Moore. Found in Petit Bot Bay, Guernsey, 
by Mrs. Dobree. It has also been found in Cornwall. Profoundly 
pinnatifid with deeply divided lobes. Length, 7 inches, breadth, 
2\ inches. 
