OiV WALLS, ROOKS ANLt STONY PLACES 325 



flowering stem grows from six to twelve inches high ; and the 

 small white or pink flowers bloom dming June and Jul3^ 



The Starry Saxifrage {S. stellaris) is a somewhat similar plant, 

 but much smaller, rarely exceeding six inches in height. It is 

 frequent on w^et rocks in the North, flowering in July and August. 

 Its leaves are sessile, 

 oblong or obovate, taper- 

 ing towards the base, 

 thin, and arranged in 

 spreading rosettes ; and 

 the stem is leafless with 

 the exception of Httle 

 bracts at the base of the 

 pedicels. The starhke 

 flowers, larger than those 

 of the last species, are 

 white, with two yellow 

 spots on each petal, and 

 are arranged in a loose 

 panicle on spreading 

 pedicels. The calyx is 

 adherent to the ovary 

 only at the base, with its 

 segments turned down 

 on the pedicels ; and the 

 petals are narrow and 

 spreading. 



Another Northern 

 species — the Yellow 

 Mountain Saxifrage [S. 

 aizoicles) — is abundant 

 on the wet rocks of 

 mountainous districts, 

 flowering from June to 



September. It is a tufted plant, with branched, decumbent, leafy 

 stems, about six inches long ; and crowded, narrow, fleshy leaves, 

 about haK an inch long, fringed with hairs at the base. The 

 flowers are yellow, in a loose panicle. The calyx is yellow, like 

 the petals, but much shorter, and erect ; and the ovary is adherent 

 to the short tube of the calyx to about half way up. 



The Rue-leaved or Tliree-fingered Saxifrage {S. iridactylites) is a 



The Ivy-leaved Toadflax. 



