20 
PERNS. 
[Grammitis. 
GRAMMITIS. Swz. GRAMMITIS. 
(yfa/jLIM, aline; alluding to the linear fructification.) 
A shows the under surface of the frond of Grammitis Ceterach. 13, the veins 
according to Newman. C, the veins according to Presle. D, position of the fruit. 
E, an unopened theca. F, a theca scattering its spores. G, the spores. H ,a 
scale. I, cuticle and stomata. J, transverse section of the rachis. 
GRAMMITIS CETERACII. 
SCALY GRAMMITIS. SCALY H ARTS-TONGUE. MILTWAST. 
(Plate 1, fig. 1.) 
Cha. — Frond pinnate or pinnatifid, scaly beneath. Lobes alter- 
nate, confluent, blunt, entire. 
Syn. — Grammitis ceterach, Swz., Hook., Mack. — Asplenium or ccterach, 
Ger., Plum., Ray. — Asplenium ceterach, Linn., Huds., Sibt., Lightf, 
Bolt., With., Spreng. — Gymnopteris ceterach, Bernh. — Scolopendrium 
ceterach, Roth. Galp., Smith. — Ceterach officinarum, Willd. Decan. 
Newm. 
Fig.— E.B. 1244.— Park. 1046,/. \—Ger.978.—Lobel, 807.— Bolt. 12 {bad). 
Des. — Root perennial, fibrous, black, tufted. Fronds many from 
the same root, herbaceous, 3 to 6 inches high, blunt, of a thick 
texture, dark green above, covered with brown scales beneath. 
Lobes confluent at their base, round, entire, alternate at the lower 
part of the frond, flat only when young, afterwards curved inwards 
towards the main rib, thereby exposing more the fructification. 
Thecae all the summer, at first concealed by the scales, afterwards 
bursting through them in oblong, transverse masses, without covers, 
but surrounded by very delicate, white, membranous scales. 
Sit. — O n rocks, old walls, &c., chiefly in the South of England. 
IIaii. — Eng. : Near Lancaster, Mr. W. Wilson. Common about Settle, York- 
shire, Mr. J. Tatham. On limestone rocks in Lath-kill-dale, Derb., Mr. J. E. 
Bowman. On a wall at Newton, near Melbourne, Derbys., Rev. A. Bloxam. 
Dovedale, Derby, Mr. T. S. Scholes. Walls at Ludlow, about the quarries, 
Salop, Mr. J. S. Bayly. Old wall near Cowley, Oxon, Mr. Baxter. Wall at 
Tocknells, near Painswick, Glou., Mr. Merrick. Martock, Somer., Mr. T. If. 
Cooper. Stapleton Quarries, near Bristol, Mr. Anderson. Cheddar, Mr. IT. 
C. Trevelyan. Malvern Abbey, Mr. W. Christy. Bath, Mr. C. C. Babington. 
On the tower of Old Alresford Chinch, Hants, Mr. Border. Walls at Win- 
chester, chiefly to the E. and N.E. of the City, Mr. W. Pamplin. Topsham and 
elsewhere in Devon, Mr. Kingston. On the bridge over the Tamar, in the road 
