394 CIIYPTOGAMIA — E(3UISETACE;t:. lEijuisetttm. 



distinct, branches nearly erect simple whorled often abortive, 

 catkin terminal upon the stem. JE. Bot. t. 929. 



Marsliy, watery places and ditches, frequent. Fr. June, July. — Next 

 in size to E. Jiuviatile : agreeiiiLT, too, soniewiiat in liabit ; liut with 

 fewer angles and teeth and fewer branches in a whorl ; and these latter 

 often short and imj)erfect, or wanting ; differing-, too, by the catkins 

 being upon stems that are similar to the barren ones. 



6. E. palusire, L. {Marsh Horse-tail^; stem furrowed round- 

 ish with 7 or 8 angles, branches simple M'horled gradually 

 shorter upwards (sometimes abortive), catkin terminal on the 

 stem. E. Bot. t. 2021. — ,'3. cdpinum ; much smaller, with 4 — 5 



angles and teeth to the sheatlis, upper bi-anches abortive y. 



polystachion, JJilld Raii Syn. Ic. p. 131, t. 5, /'. 3. 



Boggy soils, frequent. — /S, Boggy places near springs, on the higher 

 parts of the Breadalbane mountains. — y. Camberwell. G. Graves. Fr. 

 June, July. 



7. E. hyemdle, L. (rough Horse-tail); stem throwing up sim- 

 ple branches only from the base scabrous furrowed rough, 

 sheaths with about 14 very small obtuse often deciduous teeth 

 (black at the extremity), catkin terminal. E. Hot. t. 915. 



Boggy woods ; principally in the middle and north of England ; in 

 Scotland, and Ireland. Fr. July, Aug. — Most of the Horse-tails are 

 more or less rough to the touch and their cuticle abounds in silex, or 

 flinty earth ; so that they are admirably suited for the polishing of hard 

 woods, ivory, brass, &c. This species, E. hyemale, is by far the best 

 kind for such purposes, and is imported largely from Holland under the 

 name of Dutch Rushes. In Northumberland, Lightfoot tells us that 

 the dairy-maids employ it to scour and clean their milk-pails. 



8. E. variegdtuin, Schleich. (variegated rough Horse-tail); stems 

 filiform rough branched only at the base with 4 — 8 furrows, 

 sheaths with white membranaceous lanceolate teeth (black at 

 their base), catkin terminal. E. Bot. t. 1987. 



Sandy sea-shores. Sands of Barrie. Near Liverpool ; and at Mucruss, 

 Ireland, growing in water, Mr W. Wilson. Portmarnock sands, Ire- 

 land, Dr Taylor. Fr. July, Aug. — The smallest of our species, usu- 

 ally decumbent, 6 — 8 inches long, slender. At Mucruss Mr Wilson 

 finds this plant growing in water and upright to thrice that size, with a 

 stem smoother, about lO-furrowed and more polished in the furrows, and 

 the sheaths not so conspicuously nor so constantly furnished with acumi- 

 nated teeth or summits as is usual in the ordinary state of the plant. 



Note. — The remainder of the Orders of the Class Cryptogamia 

 are characterized in the following Appendix, and more fully, to- 

 gether with the Genera and Species, in Parts I. and II. of the 5th 

 Vol. of " English Flora" (or the 2d Vol, of the present work.) 



