ALPHABETICAL LIST OF PLANTS 269 



D. caesius. — Old walls or sunny fissures in limy, sandy, poor soil. 

 Compact tufts of glaucous leaves and clouds of rosy-pink flowers, on 

 stems about 6 inches long. Blooms in the summer. The native 

 Cheddar pink, growing freely from seed, which should be sown on old 

 walls and amongst rocks. One of the prettiest and easiest grown 

 of the genus. 



D. callizonus. — Rather cool, very well-drained, sandy loam, 

 amongst stone and rocks. Dwarf-growing, with broad, greyish 

 leaves, and of rather spreading habit. Large, brilliant pink flowers, 

 with a dark belt of crimson at base, about 4 inches high. A most 

 lovely and difficult plant to grow, going off" in that unaccountable 

 manner so characteristic of many of the alpine pinks. Easily raised 

 from seed when it can be obtained ; but it ripens it but sparingly. 

 Keep well watered during growing season. 



D. cat. alpinus. — Is a hybrid of the above with alpinus^ and is of 

 more robust constitution. 



D. cruentus. — Light gritty, sandy loam, in sun. Foliage rather 

 sparse. Deep crimson flowers in crowded heads on stems about 

 12 inches high. Very easily grown and raised from seed. 



D. deltoides. — Will grow almost anywhere in light sandy soil. 

 Forms spreading mats, about 2 inches high, of smooth, blunt leaves. 

 Flowers very numerous, on branching stems about 8 inches high, 

 either rosy-pink or white, with a crimson base and petals. Comes 

 very freely from seed. Easily grown, and apparently not affected 

 by the wire-worm. Flowers nearly all the summer. Young plants 

 are best, as when old they are apt to get ragged in growth. Very 

 pretty and useful species. 



D. Fischeri. — Half-shady position in rather moist, gritty loam. 

 Light, rose-coloured, solitary flowers, 3 to 4 inches high, freely pro- 

 duced in the summer. 



D. Freynii. — Peaty, gritty loam, without lime, in a cool, well- 

 drained corner. Glaucous foliage and large rosy-purple flowers, 

 Dwarf of habit, and difficult to grow. 



D.fragrans. — Light sandy loam, in sun. Fragrant white flowers, 

 deeply fringed. Pretty and compact-growing. 



D. glacialis. — Crevices of rockwork in half-shady corner. It re- 

 quires cool, peaty, and leaf-mould soil mixed with granite chips. It 

 very much dislikes lime. Forms compact tufts of narrow leaves, 

 and during the summer numerous pink flowers rather smaller than 

 D. alpinus. A pretty and attractive little plant, very difficult to 

 cultivate. Requires plenty of moisture during the growing season. 



D. g. gelidus. — Of much the same habit, and requires similar 

 treatment as D. glacialis. Pure pink flowers, white spotted at the 

 throat. 



D. Knappii. — Light sandy soil and lime rubbish. In position not 



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