ALPHABETICAL LIST OF PLANTS 259 



C. purptiretes. —Gro^'mg about 2 feet high, with large reddish- 

 purple flowers, with a dark purple spot at base of petal, in the 

 summer. Leaves rather hairy. Not common. 



C. rosmarinifolitis (see C. Clusii). 



C. salvifolius. — Slender habit, growing some 2 feet high, with 

 sage-like leaves and white flowers ; very hairy. The above are 

 the most distinctive kinds, but others are also well worth growing. 



C. Gatintlettii. — Crimson flowers. 



C. obttcsifolius. — White flowers, yellow eye. 



C. monspelienses. — Flowers white. 



C. recognitus. — Dwarf-growing. White, crimson-spotted flowers. 



Claytonia (Portulaceae) 



Rather uninteresting little plants for damp spots in loam and leaf- 

 mould. Some varieties are only biennials. Rather fleshy, obovate 

 leaves in compact tufts about 3 inches high, and loose racemes of 

 small flowers, rose-coloured, with deeper veins. The following are 

 the best varieties : — C. Asarifolia^ C. siberica^ and C virginica. 



Clematis (Ranunculaceae) 



Though the showy hybrids are not suitable for the rock garden, 

 other varieties can be used with great eftect to clothe large masses 

 of rock or waste banks. 



Many species are known under the name oi Atragene. 



C. alpina. — With large violet-blue flowers. 



C. tangitica. — Yellow flowers and fluffy seed-pods. 



C. Viticella. — Large blue, purple, or rose-coloured flowers. 



C. Douglasi. — Non-climbing variety, only growing about i foot 

 high. Flowers deep purple inside, lilac outside. Leaves hairy. 



Cochlearica alpina (Cruciferae) 



A native. Forms neat rosettes of glossy, heart-shaped leaves. 

 Dwarf-growing. White flowers. Of no great value. Should be 

 planted in poor soil to prevent its growing coarse. 



CoDONOPSis (Campanulaceae) 



A genus of plants of the bell-flower order, growing from i to 2 

 feet high. They should be planted high up on the rock garden, so 

 that the curiously veined markings inside the pendulous bells can 

 be seen. All are of easy culture in a warm corner. They are 

 rather pretty. 



C ovata. — The best known. Pendulous, pale blue flowers with 



