212 ONAGRACE^E. 



E. roseum (Pale Smpoth-leaved Willow-Herb), growing 

 in wet places about London, with stalked, egg-shaped 

 leaves, and an imperfectly 4-angled stem; E. alsinifo- 

 lium . (Chickweed-leaved Willow-Herb), a mountainous 

 species, from 6 to 12 inches long, with very thin egg- 

 shaped, pointed leaves, and a few rather large flowers ; 

 and E. alpinum (Alpine Willow-Herb); also a mountain 

 species, 3 to 4 inches high, which is distinguished from 

 the last by its obtuse leaves, and 1 or 2 flowers, which 

 droop while in bud. 



2. (ENOTH^RA (Evening Primrose). 



1. (E. biennis (Common Evening Primrose). A tall 

 and stout herbaceous plant, with long, light-green, 

 smooth leaves, and large, pale yellow, fragrant flowers, 

 which open in the evening, and wither towards the 

 middle of the next day. It is common in gardens, and 

 in a few places appears to be naturalized. Fl. July 

 September. Biennial. 



3. ISNARDIA. 



1. /. palustris (Marsh Isnardia). The only British 

 species. A small herbaceous plant, 6 8 inches long, 

 with prostrate rooting stems, and axillary sessile flowers, 

 which are destitute of petals. Yery rare ; in a pool, at 

 Buxstead, Sussex, and on Petersfield Heath, Hampshire. 

 FL July. Annual. 



4. CIRC^A (Enchanter's Nightshade). 



1. C. Lutetidna (Common Enchanter's Nightshade). 

 Stem downy, branched ; leaves egg-shaped, tapering 

 to a point, toothed ; calyx hairy. Damp shady places ; 

 common. A slender herbaceous plant, 1 2 feet high, 

 with creeping roots, spreading foliage, and terminal 

 clusters of minute white flowers, with pink stamens, 



