ALPHABETICAL LIST OF PLANTS 317 



and white flowers in whorls, and rising about 12 inches over the 

 foliage. If it proves hardy, as it appears to be, it should be an 

 acquisition for the rock garden. 



OxALis (Geraniaceae) 



A large genus of dwarf-growing plants, but few are hardy except 

 our own native species. The following, how^ever, are of proved 

 hardiness : — 



O. Acetosella. — The native Wood Sorrel, which, however, grows so 

 freely in woods that it is scarcely worth devoting a place to it in 

 the rock garden. 



O. Adenophylla. — Requires cool, sandy loam in partial shade. 

 The foliage and habit resemble O. enneaphylla, but the flowers are 

 a lovely, very pale pink, with a blue line down the centre of each 

 petal. A most lovely plant, but as yet very rare in cultivation ; it 

 is, if possible, prettier than its prototype, O. enneaphylla. 



O. enneaphylla. — Likes a cool, moist, light sandy loam free from 

 lime. It grows more freely in shade, but flowers better if exposed to 

 a certain amount of sunshine. It forms a compact tuft of very 

 pretty, glaucous, grey, crinkled leaves. It has a curious scaly 

 bulbous root. The flowers, which are rather like a Convolvulus, are 

 pearly-white, with a purple stain at the base of each petal, and 

 nestle amongst the leaves. It blooms in June and July, and is quite 

 hardy, and not difficult to grow. There are few more fascinating or 

 dainty plants for the rock garden. 



O.floribunda. — Any soil in partial shade. Forms a compact tuft 

 of pretty leaves growing about 6 inches high, and produces during 

 the whole summer a succession of pretty rose-coloured flowers. It 

 is of the easiest culture, and of rapid growth. There is also a 

 pretty white form equally free-flowering. 



OXYTROPIS (LeGUMINOSAE) 



A genus of dwarf^growing plants of the Vetch order. They all 

 require a sunny, warm position in well-drained, light sandy loam. 



O. baicalensis. — Grows about 4 inches high, and has blue flowers 

 in July. 



O. campestris. — Grows about 6 inches high. Has rather downy 

 foliage. It has erect spikes of yellowish flowers in the summer. 

 Increased by seed or division. Not a very striking plant. 



O. pyrejiaica. — A dwarf, very prostrate species. The leaves are 

 clothed with a silky down, and only rise a few inches from the 

 ground. Purplish-lilac flowers, borne in rather dense heads. It is 

 of fairly easy culture, and can be increased by seed or division. 

 Blooms in July. 



