ONAGRACE.E, 221 



the upper leaves tapering at both ends. Flowers pink or white, 

 or very pale rose-colour. Petals twice as long as the sepals, 

 notched. Seeds ovate or oblong, finely shagreened. 



In moist and dry places, walls, etc. Perennial ; June-Sep- 

 tember. 



E. lanceolatum, Fr. Lanceolate-leaved Willow-herb. — l.c. 

 370 6. 



Stem erect, round, pubescent, leafy, from one foot to a yard 

 high. Leaves lanceolate, crenate-serrated, with stout callous 

 teeth, tapering at the base ; the axils of the leaves are generally 

 furnished with abortive shoots or small leaves. Segments of the 

 calyx ovate, lanceolate. Seeds conical-cylindrical, smooth and 

 shining. 



Stapleton, near Bristol, Mr. Thwaites. Perennial ; June, 

 July. 



The herbage of this species or variety is usually reddish. 



Query. — Is the range the same as in E. montanum, of which 

 it is probably only a variety ? CM ' ; . ■. V .' 



§ 2. Stigmas united in a mass (globular) i--^--- 



E. palustre, Linn. Marsh Willow-herb. — e.b. 346. l.c. 372. 

 A. 18. C. 82. Lat. 50-61°. Alt. 0-650 yds. Tem. 51-40°. 



Stems round, simple or branching, glabrous or nearly so, 

 leafy, with stoloniferous roots. Leaves elliptic-lanceolate, taper- 

 ing at the base and petiolate, entire or toothed, glabrous. Flowers 

 pale rose-colour. Sepals oblong, mucronulate, half as long as 

 the petals. Seeds scarcely shagreened ; plume stipitate. 



In marshy places. June— September. 



This is a very variable species. The plant is often bushy, 

 branching from the base. The stem is often pubescent or pube- 

 rulent, and the leaves are often strongly toothed. It varies in 

 size with the various localities where it is found. 



E. tetragonum, L. Square-stalked Willow-herb. — e.b. 1941. 

 L.c. 373. A. 18. C. 80. Lat. 50-60°. Alt. 0-700 yds. Tem. 

 51-40°. 



Stem erect or ascending, with 2-4 elevated lines. Leaves 

 glabrous, oblong-lanceolate, often narrow, closely toothed, rarely 

 sinuate, opposite, sessile or nearly so, on decurrent petioles, 

 forming the prominent lines of the stem. Flowers in clusters 

 or in leafy panicles, axillary and solitary, small, rose-coloured. 

 Seeds oblong, with a sessile plume. 



