226 ROCK GARDENS 



freely produced in June and July. Propagation by division and 

 cuttings. After flowering, cut back to prevent the plant getting 

 bare and "leggy." 



A. fnaritimum. — Hot, dry, sandy soil. It is an annual with 

 sweet-scented white flowers. It sows itself freely about, and is 

 useful for tops of walls, etc. It is a native. 



A. montanum. — Sunny position in sandy soil. Spreads into 

 compact tufts about 3 inches high. Glaucous green foliage covered 

 with stellate hairs plainly visible. Fragrant yellow flowers, like 

 alpine wallflowers, in early summer. Quite hardy, and readily in- 

 creased by cuttings or division. It is a very attractive feature when 

 grown into a large mass partially falling over some rock. 



A. podolicum. — Sun, and light dry soil. A dainty little species, 

 only growing some 3 inches high, with small white flowers freely 

 produced. Is quite hardy, but not of any special value. 



A. pyrenaicwn. — Sun, and sandy soil. A diminutive species 

 growing only 3 to 4 inches high, with grey downy leaves and 

 white fragrant flowers. Quite worthy of a place. 



A. saxatile. — Sun, in any light soil. Spreading habit and fairly 

 rapid growth. About 9 to 12 inches high. Covered from March 

 to May with a profusion of golden-yellow flowers. Rather 

 disHkes heavy, moist, rich soils, where it is liable to perish 

 in the winter, otherwise of easiest culture. Readily increased 

 by cuttings. An old favourite, and should have a place in every 

 garden. 



A. saxatile^ ft. pi. — A double variety of above. Blooms quite 

 as profusely, and is altogether rather an improvement. 



A. saxatile citrinuyn. — A variety with pale, sulphur-coloured 

 flowers, which are very pretty. Another indispensable plant. 



Old plants of the last three-named varieties should be cut 

 back after flowering to prevent their getting bare and leggy. 



A. saxatile^ " Tom Thuvib.^^ — A very pretty, diminutive form of 

 saxatile., forming compact little cushions some 3 inches high. Also 

 a plant for a choice spot. 



A. serpyllifolium. — Fully exposed position in sandy soil. Forms 

 small bushy plants about 3 to 4 inches high, which become as 

 compact as moss. Grey-green leaves, and yellow flowers freely 

 produced. A dainty and attractive little plant. 



A. spinosum (syn. Koniga spinosa). — Light soil and exposed 

 position. Plants form a pretty little silvery bush. Leaves covered 

 with minute stellate hairs. It derives its name from the branches 

 on old-established plants being transformed into spines. Flowers 

 insignificant and not pretty. This plant merits a place in some not 

 over-choice part on account of its distinctive appearance. Easily 

 increased from cuttings. 



