DIDYNAMIA—GYMNOSPERMIA. Stachvs. 99 



2. S. ambigua» Ambiguous Woundwort. 



Six flowers in a whorl. Leaves oblong, stalked ; heart- 

 shaped at the base. Stem hollow. 



S. ambigua. Engl. Bot. v. 30. t. 2089. Comp. ed. 4. 103. Hook. 

 Scot. 183. 



In waste as well as cultivated ground, chiefly in Scotland. 



In potatoe fields in the Orkneys, also in Ross-shire. Prof. Hooker 

 and Mr. Borrer. Near Edinburgh. Mr. G. Don. At the foot 

 of the Pentland hills. Mr. Weatherhead. About Inverary. Mr. 

 Maughan. By the London road about a furlong north of Quorn- 

 don, also at Sheepshead, Leicestershire. Rev. W, Parkinson. 



Perennial. August, September. 



Root white, creeping. Herbage much less fetid, of a lighter green, 

 and more silky than the preceding. Stem hollow. Leaves ob- 

 long, acute, serrated, slightly heart-shaped, but not rounded, at 

 the base. Ft. red, brighter and more crimson than those of 

 S.sylvatica; the palate more or less variegated with white, and 

 dark purple ; upper lip very hairy. This seems an intermediate 

 species with regard to the preceding and the following. 



3. ^. palustris. Marsh Woundwort. 



Six to ten flowers in a whorl. Leaves linear-lanceolate, 

 half embracing the stem. Root tuberous. 



S. palustris. Linn. Sp. Pl.HW. IVilld. r. 3. 98. Fl. Br. 633. 



Engl. Bot. V. 24. ^ 1 675. Curt. Lond.fasc. 3. t. 35. Hook. Scot. 



183. Ehrh. PI. Of. 446. Riv. Monop. Irr. t. 26./. 1 . 

 S. n. 257. Hall. Hist. v.\.\\3. 

 Sideritis anglica, strumosa radice. Raii Syn. 242. 

 Lysimachia liirsuta purpurea, flore galericulato. Loes. Pruss. 156. 



^41. 

 Panax coloni. Ger. Em. 1005./. 

 Clymenum minus. Dalech. Hist. 1357./. 



In wet hedges and fields, and about the banks of ditches and ri- 

 vers, very common. 



Perennial. August. 



Root creeping extensively, fleshy, throwing out in autumn a num- 

 ber of tuberous shoots, which render it, in low wet ground, very 

 difficult of extirj)ation. This tlicrefore should be attempted 

 in summer, before these knobs arc produced, when the flowers 

 are just appearing. The herbage is fetid, greyish and silky. 

 Stems very erect, rough with deflexed bristles, bearing many 

 pairs of long, narrow, serrated, almost sessile leaves, somewhat 

 woolly beneath, whose rounded bases embrace the stem. FL 

 light purj)lc, variegated with violet and white, forming many 

 whorls, dis|)i)s(Ml in a lax sjiikc, each whorl accompanied by a 

 pair of small deflexed leaves. 



