THE COMMON HART'S-TONGUE FERN. 139 
SCOLOPENDRIUM VULGARE, v. SAGITTIFOLIUM, Wollaston MS. Moore, Ferns of 
Gt. N Brit. ature Printed, under t. 42. 
Var. cornutum: fronds strap-shaped, the margin crenated or 
lobate, the apex usually obtuse, the midrib excurrent below it, form- 
ing a horn projecting from the surface. .[Plate LX XXIV B.] 
ScoLoPENDRIUM VULGARE, v. CORNUTUM, Moore, Ferns of Gt. Brit. Nature 
Printed, under t. 42; Id., Handb. Brit. Ferns, 198. 
Var. polyschides: fronds narrow strap-shaped, or linear-oblong, 
subtruncate at the base, the margin distantly lobed, and irregularly 
crenate; fertile. [Plate LX XXIII A. ] 
ScoLOPENDRIUM VULGARE, v. POLYSCHIDES, Gray, Nat. Arr. Brit. Pl. ii. 15. 
Moore, Hamdb. Brit. Ferns, 3 ed. 198; 1d., Ferns of Gt. Brit. Nature 
Printed, t. 42, fig. 2. Deakin, Florigr. Brit. iv. 79, fig. a. Sowerby, Ferns 
of Gt. Brit. 60. 
SCOLOPENDRIUM VULGARE, V. ANGUSTIFOLIUM, of gardens. 
SCOLOPENDRIUM OFFICINARUM, v. ANGUSTIFOLIUM, Kunze, Lin. xxiii. 291. 
Mettenius, Fil. Hort. Bot. Lips. 67. 
SCOLOPENDRIUM PENNSYLVANICUM, of gardens; according to Kunze. 
SCOLOPENDRIUM VULGARE, v. LINEARE, Francis, Anal. Brit. Ferns, 4 ed. 52. 
PHYLLITIS POLYSCHIDES, Ray, Synop. 117. i 
Var. marginatum: fronds narrow-oblong strap-shaped, truncate 
at the base; attenuate at the apex, the margin inciso-lobate ; fertile ; 
the epidermis of the under surface also developed near the margin 
into a lobed excurrent membrane, which bears sori on both surfaces. 
[Plate LXXXVI A.] 
ScoLOPENDRIUM VULGARE, v. MARGINATUM, Moore, Handb. Brit. Ferns, 2 ed. 
174; 3 ed. 198; Id., Ferns of Gt. Brit. Nature Printed, t. 42, fig. 3. 
Var. muricatum : fronds oblong strap-shaped, the margin slightly 
lobed or sinuous, the upper surface unevenly ridged, the ridges 
oblique and bearing raised or excurrent points. 
SCOLOPENDRIUM VULGARE, v. MURICATUM, Moore, Ferns of Gt. Brit. Nature 
Printed, under t. 42; Jd., Handb. Brit. Ferns, 3 ed. 208. 
Var. crispum: fronds broadly oblong strap-shaped, the margins 
` much undulated, the base strongly auriculate cordate; usually barren. 
[Plate LXXXIII B.] l 
SCOLOPENDRIUM VULGARE, v. CRISPUM, Gray, Nat. Arr. Brit. Pl. ii. 15. Moore, 
Handb. Brit. Ferns, 8 ed. 198; Id., Ferns of Gt. Brit. Nature Printed, 
t. 42, fig. 4. Sowerby, Ferns of Gt. Brit. 60. Deakin, Florigr. Brit. iv. 78. 

