80 
FERNS, 
[Equisetum. 
Sit and IIab. — Very common in ponds, wet valleys, water-courses, &c. 
/3 : — Breadalbane Mountain, Perthshire, at 3000 feet high, Mr. H. C. Watson, 
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 9, fig. 7.) 
Cha. — Stems 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 woolly. Stem branched at the base only, rather 
procumbent in habit, 4 to 6 inches long, of a green color, rough and 
channelled. Catkins terminal, ovate, at first black and sessile, after- 
wards long stalked, yellow and brown. Sheaths of the stem widening 
at top, black only at their upper part, which is sharply, but not nu- 
merously toothed, the upper sheath of the stem being much larger 
and more spreading than the rest. 
Its smaller size, recumbent habit, differently-colored sheatlis, with their 
prominent and permanent teeth, serve to distinguish this from E. hyemale. 
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. W. 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. — Sco. : Sands of Barry, 
Forfarshire, Dr. Grcville. Near Avoch, Rosshire, 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 llYEMALE. 
ROUGH HORSE-TAIL. SHAVE GRASS. DUTCH RUSH. 
(Plate 9, fig. 8.) 
Cha. — S tem erect, rough, deeply striated. Sheaths short, ap- 
pressed, black at each end. Teeth deciduous. 
Syn. — Equisetum hyemale, Linn., Willd., Smith, Hook., Light/., Ehrh., 
Huds., With.. Pursh, Mack., Gray. (Not of llory .) — Equisetum nudum, 
Ray, Gerard. 
Fig. — E. B. 915. — Hook, in Flo. Lon. 161. — Gcr. Her. 1113. — Bolt. 39. — 
Schk. fil. 1 72. 
