24 
FERNS. 
[ Polypodium . 
3.— POLYPODIUM DRYOPTERIS. 
TENDER THREE-BRANCHED POLYPODY. 
(Plate 1, fig. 4.) 
Cha. — F rond tri-pinnate, tender. Branches drooping. Lobes 
obtuse, crenate. Sori distinct. 
Syn. — Polypodium dryopteris of Linn., Willd ., Swz., Ehrh., Hilda., Bolt., 
Light/., Hull., Galp., With., Neivn., Smith, Hook., Grev., Mack. — Poly- 
podium Pulchellum, Gray. Polystichum Dryopteris, Roth. 
Fig. — £.21.616 (excellent). — Bolton, 28 (had.) — Gerard, 974. — ParL1044. 
Des. — Root perennial, creeping, black, slender, slightly hairy. 
Fronds herbaceous, scattered, tender, drooping, smooth, and of a 
light green color. The three branches (of which the middle may be 
considered a continuation of the stem) are bent backwards, and 
doubly pinnate, Lobes crenate, oblong, obtuse. Main stem 6 to 8 
inches long below the branches, quite smooth, except at the very 
base. Sori nearly marginal, scattered, remaining perfectly distinct. 
Sit. — Dry stony places, chiefly in mountainous countries of the north. 
Hab. — Eng. : Rocks at the foot of the Cheviot, above Langley Ford, Mr. 
Winch. Wooded banks of the White Adder, between the Retreat and Elm 
Cottage, Berwickshire, Dr. Johnston. Durham, Mr. R. B. Bowman. Near 
Yoxhall Lodge, in Needwood Forest, Staffordsh., Mr. C. C. Babington. Cum- 
berland, up to 500 yards of elevation, Mr. H. C. Watson. Higher part of the 
Tees, Mr. J.Hogg. Egerton Moor, near Bolton, Mr. W. Christy. Dean Church, 
Clough, near Bolton, Mr. J. Martin. Dry places near Lancashire, (sparingly), 
at Hill Cliff, Cheshire, and at Warrington, Mr. Rylands. Bogliart Hole Clough, 
and Prestwich Clough, Lane., Mr. Merrick. Rocks at the Belle Hag, Sheffield, 
G. F. Froddesley Hill, Salop, Rev. W. Corbett. N. side of Titterstone Clee 
Hill, Salop, Mr. E. Lees. Near Richmond, Yorks., Mr. J. Ward. Near Bristol, 
Miss Worsley. — Wal. : Craig Breidden, Montgomerysh., Mr. J. E. Bowman. 
Rhaiadr-y-Wenol-Twll Du, Caernarvonsh., Mr. C. C. Babington. Frequent in 
N. Wales, and observed near Twll Du at an elevation of 1000 feet and upwards, 
Mr. W. Wilson. Just leaving Llangollen, on a slate rock, Mr. W. Wilson and 
Mr. Bowman. — Sco. : Moray, Rossb., Rev. G. Gordon. Perthshire, Forfarshire, 
Aberdeenshire, Mr. H. C. Watson. Hawthorn Dean, near Edinburgh, Mr. T. 
H. Cooper. — Ire. : On the mountains of Mourne, Turk Mountain, Killarney, 
Mam-turk, Cunnamara, Tullamore Park, &c., Mr. Mackay. 
Geo. — Throughout great part of Europe and North Asia. 
4.— POLYPODIUM CALCAREUM. 
RIGID THREE-BRANCHED POLYPODY. LIME POLYPODY. 
(Plate 1 , fig. 5.) 
Cha. — Frond tri-pinnate, rigid. Branches upright. Lobes ob- 
tuse, deeply crenate. 
