ROCK, ALPINE, FERN, AND AVILD GARDENING. 



271 



rockery. It is as hardy as a weed ; can be propa- 

 gated by division most easily. 



* 10. Campanula turbinata (A'ase Bell-flower). — 

 Its name suggests its shape, which is that of a 

 shallow, open, cup-shaped Tase. It is very hardy, 

 dwarf in habit, obtainable in two or three coloui-s, 

 and not at all particular in its requirements. The 

 ilowers are large and freely produced. A native of 

 Transylvania. 



11. Campanula Waldsteiniana (Waldstein's Bell- 

 flower). — This is another of the very dwarf Cam- 

 panuLts deserving a place on every select rockery. It 

 produces an immense number of bluish-Hlac flowers. 

 Soil, sandy loam, intermixed with a little leaf -mould. 

 Situation exposed, sunny, and well-drained ; propa- 

 gated by division with care, but most easily by 

 cuttings in spring in a gentle hot-bed. A native of 

 Hungary. 



* 12. Campanula Zoysii (Zoyse's Bell-flower). — A 

 charming tufted plant, the flowering-stems of which 

 rarely exceed two to three inches high. The flowers 

 are azure-blue, of comparatively large size. Thrives 

 best on fully -exposed spots in sandy loam. A native 

 of Carinthia. 



*Ce)-astiwn alpinum (Alpine Cerast). — A native 

 plant, pretty abundant in some parts of Scotland, 

 dwarf-growing, rather striking in appearance, and 

 producing large white flowers in summer. Propa- 

 gated from seeds, or by cuttings and division. 



* Cheiranthus alpinus (Alpine Wall-flower). — Too 

 well known to require any description. A very use- 

 ful early-blooming plant, producing an abundance 

 of bright yeUow flowers. Ordinary soil. Propagated 

 by cuttings. A native of the European Alps. 



* Cheiranthus Mifishalli fMarshaU'sWall-flower).— 

 This hybrid is worth growing in every garden. Its 

 flowers are of a deep orange-yeUow colour, and are 

 produced plentifully in Hay and June. The plant 

 is from eight to twelve inches in height. Will grow 

 in dry situations, though it is not at all particular as 

 to situation. Ordinary garden soiL Its supposed 

 parents were the perennial C. alpinus or C. oohrokucus, 

 and the brilliant orange-flowered annual Erysimum 

 Teroffshianum. 



* Chionodoxa lueilue (Glory of the Snow).— This 

 charming bulbous plant was introduced in 1877 by 

 Jlr. George Maw. It is perfectly hardy, producing 

 flowers much like the blue Nemophila in April and 

 .May. It should find a place in every garden. It is 

 admirably adapted for growing in pots in a cold 

 frame, where the flowers are even more beautiful 

 than those grown out of doors. It thrives in any 

 good soU, though the addition of a Httle peat or leaf- 

 mould to ordinary loam seems to yield the best 

 results. It was introduced from mountainous 

 elevations, 3,000 to 4,000 feet high, near Smyrna. 



* Colcliicum autumnale (Autumnal Crocus). — The 

 popular name is misleading, as it is not a Crocus, 

 though its flower is much like one. A hardy native 

 plant, blooming in September and October. WiU 

 grow anywhere, but does best in a moderately shady 

 spot. It is usually found growing wild in moist 

 meadows. Should not be disturbed oftener than 

 every three years. There are single and double 

 varieties, purple and white in both cases. 



* Colchieum variegatum (Chequered Meadow Saf- 

 fron). — The segments of the corolla are beautifully 

 chequered with white and rosy-purple. Sandy loam 

 of good quality, and in a warm situation, having a 

 southern aspect. It flowers in the autumn. A native 

 of Greece. 



* Convallaria majalis (Lily of the Valley). — 

 Although this, deservedly popular plant is usually 

 grown in beds, it wOl be found an admirable plant 

 for moist and shady positions on the rockery. By 

 planting in various aspects the flowering period may 

 be considerably extended. Soil, sandy loam and 

 leaf-mould, well enriched with cow-dung. It grows 

 wild in much abundance in some parts of England, 

 and almost always in woods. Propagated by separa- 

 tion of the crowns. A very much finer variety than 

 our native one (the " Berlin ") is grown in Germany, 

 whence it is imported in large quantities for forcing 

 by our florists. 



Comus caiuidensis (Canadian Cornel). — A miniature 

 shrub, growing from six to eight inches high, yield- 

 ing an a^bundance of pleasing flowers. It is most 

 suitable for the damper portions of the rockery. 

 Tn a light peaty soU, with plenty of sand inter- 

 mingled, it win be sure to thrive, provided plenty 

 of moisture be present. It flowers from June to 

 October. A native of North America. We have 

 a native Cornel (C suecica), often confounded with 

 canadensis, not uncommon in Scotland, which is not 

 undeserving of a place among dwarf-growing bog 

 plants. 



Crassula alpestris (Alpine Crassula). — ^A creeping, 

 somewhat branched plant, bearing white wax-like 

 flowers in terminal clusters. It is a plant of re- 

 cent introduction, which has proved hardy at Kew, 

 though coming from the Cape of Good Hope. 

 Blooms throughout the summer. Should be planted 

 in a dry open position on the sunniest part of the 

 rockerj'. 



* Crocuses. — Of this genus there is scarcely one 

 unsuitable for the rockery. Many species are at 

 present botanical rarities. Of these it will scarcely 

 be necessary to take any notice in this select list of 

 Alpines, except to say that the cultivation suitable to 

 one is, generally speaking, suitable to aU. We shall 

 mention only such as are likely to prove useful on 

 the open-air rockery, and shall make no mention of 



