FERNS. 
80 
[ Equisetum . 
Sit. and Hab. — Very common in ponds, wet valleys, water-courses, &c. 
— /3 : Breadalbane Mountain, Perthshire, at 3000 feet high, Mr. H. C. f Fat son. 
— y : No certain habitat of this can be given, because it is an accidental state of 
the plant, and not a permanent variety. I have often found it in Richmond Park, 
Surrey, and by the side of the Lea River at Stratford, Essex. 
Geo. — Common throughout Europe, and in North America. 
7.— EQUISETUM VARIEGATUM. 
VARIEGATED ROUGH HORSE-TAIL. 
(Plate IX, fig. 7.) 
C iia . — S tems procumbent, rough. Sheaths black at top. Teeth 
few, white, and persistent. 
Syn. — Equisetum variegatum, Willd., Schk., Smith, Hook., Mack. — Equise- 
tum arenarium, of authors. — Equisetum tenue, Hopp. 
Fig .—E. B. 1987. 
Des. — Root very w'oolly. Stem branched at the base only, rather 
procumbent in habit, 4 to 6 inches long, of a green colour, rough and 
channeled. Catkins terminal, ovate, at first black and sessile, after- 
wards long stalked, yellow and brown. Sheaths of the stem widen- 
ing at top, black only at their upper part, which is sharply, but not 
numerously toothed, the upper sheath of the stem being much 
larger and more spreading than the rest. 
Its smaller size, recumbent habit, differently-coloured sheaths, with their 
prominent and permanent teeth, serve to distinguish this from E. liyemale. 
Sit. — On the sandy sea-shore in the north of the kingdom. 
Hab. — Eng.: Sand hills on the Cheshire coast, between Hoylake and the Rock 
Fort, Mr. H. C. Watson. Wardrew, Northumberland (abundant), Mr. Winch. 
Southport, Lane., Mr. IF. Wilson. Near the Powder Magazine, in Wallasey, 
opposite Liverpool, Mr. J. E. Bowman. Bootle Sands, near Liverpool, Mr. 
Rylands. Near Winch Bridge, Teesdale, Mr. Bowman. — Scot.: Sands of Barry, 
Forfarshire, Dr. Greville. Near Avoch, Ross-shire, Rev. G. Gordon. — Ire. : 
Portmarnock, opposite Baldoyle, Dr. Taylor. Mucruss, Killarney (a tall var.), 
Mr. W. Wilson. Moist banks near a waterfall at the upper end of Colin Glen, 
Belfast, Mr. Mackay. Ballyharrigan Glen, near Dimgiven, Mr. D. Moore. 
Geo. — Switzerland, Italy, France, Alsatia, &c. 
8.— EQUISETUM HYEMALE. 
ROUGH HORSE-TAIL. SHAVE GRASS. DUTCH RUSH. 
(Plate IX, fig. 8.) 
Ciia. — Stem erect, rough, deeply striated. Sheaths short, ap- 
pressed, black at each end. Teeth deciduous. 
Syn. — Equisetum liyemale, Linn., Willd., Smith, Hook., Light/., Ehrh., Huds., 
With., Pursh, Mack., Gray. (Not of Bory.) — Equisetum nudum, Ray, 
Gerard. 
Fig. — E. B. 915. — 1 look, in Flo. Lon. 161. — Ger. Her. 1113. — Bolt. 39. — 
Schk. fil. 172. 
