120 THE FLORA OF THE ALPS 



latum, S. and M. ; leaves oblong-lanceolate, on long 

 stalks, mostly alternate, whole plant pubescent ; Vosges, 

 Puy-de-D6me. E. Duriczi, Gay ; stem prostrate and 

 rooting at the base, leaves opposite, lanceolate, shortly 

 stalked, with rounded base, dentate ; Jura, Vosges, Puy- 

 de-D6me, Pyrenees. 



C. Flowers regular ; petals deeply bifid ; stamens and 

 styles erect ; stigmas united into a club ; no stolons : 

 E. tetragonum, L. (adnatum, Griseb.) ; stem with 2 or 4 

 raised lines, lanceolate, slightly decurrent, strongly denti- 

 colate, flowers small, purple; wet places. E. Lamyi, 

 Schultz ; closely resembling the last, but flowers rather 

 larger, pink, plant bluish-green ; wet places, local. E. 

 roseum, Schreb. ; flowers pink, stem with 2 or 4 raised 

 lines, leaves thin, glabrous, narrowed at both ends, all 

 distinctly stalked, buds inclined, acuminate ; thickets. E. 

 alpestre, Jacq. (trigonum, Schr.) ; leaves in whorls of 3 or 

 4, sessile, lanceolate, acuminate, flowers light pink, rather 

 large, stem nearly simple ; rocky ; alpine. 



D. Flowers regular; petals deeply bifid; styles and 

 stamens erect, stigmas united into a club ; stoloniferous : 

 E. palustre, L. ; stem without raised lines, leaves nar- 

 rowly lanceolate, usually opposite, nearly entire, sessile; 

 wet places, common. E. virgatum, Fr. (obscurum, Rchb.) ; 

 leaves lanceolate with rounded base, sessile, dentate, 

 stem with 2 or 4 prominent lines ; occasional. E. alsini- 

 folium, Vill. (priganifolium, Lam.) ; flowers few, rather 

 large, bright pink, leaves ovate, shining, with distant 

 teeth, stolons underground, scaly; mountain streams, 

 frequent. E. an agallidi folium. Lam. ; leaves elliptic- 

 lanceolate, obtuse, entire, stalked, stolons above ground, 

 leafy; moist, frequent. E. alpinum, L. (nutans, Schm.) 



