48 



HARDY PERENNIALS AND 



hollow stems, seldom more than 9in. high. The forked flower 



stalks are furnished with embracing leaves, differing very much 



from the others, which are 

 stalked, heart-shaped, nearly 

 round, and evenly-toothed. Ail 

 the foliage is of a rich dark 

 shining green colour. Strong 

 specimens produce flowers for 

 a long time, fully two months, 

 and frequently they burst into 

 blossom again in the autumn. 

 Individual flowers are very last- 

 ing, and, moreover, are very 

 effective in a cut state. It is a 

 robust grower, providing it is 

 not in light dry soil ; it seems 

 with me to do equally well 

 fully exposed to sunshine and 

 in partial shade, but both posi- 

 tions are of a moist character. 

 It has long fleshy roots, which 

 allows of its being transplanted 

 at any time, early spring being 

 the best, to increase it. The 

 crowns should be divided every 



three years, when there will be found to be ample roots to 



each one. 



Flowering period, April to June. 



FIG. 22. CALTHTJS PALTJSTRIS FLORE- 



PLENO. 

 (One-half natural size.) 



Calystegia Pubescens Flore-pleno. 



Nat. Ord. CONVOLVTJLACE^. 



THIS double Convolvulus is a somewhat recent introduction 

 from China ; it is hardy and perennial. So distinct are its large 

 flesh-coloured flowers that they are often taken at the first 

 glance, when cut, for double pyrethrums or chrysanthemums, 

 but, seen in connection with the plant, the form of foliage 

 and climbing or twining habit of the bindweed soon enable 

 the most casual observer of flowers to recognise its genus. 



The flowers are 2in. to Sin. across, petals long, narrow, wavy, 

 and reflexed ; these are well held together by the five-parted 

 calyx, further supported by a bract of two small but stout leaves. 

 The flower stalks are round and wiry, Sin. or 4in. long ; they are 

 produced all along the twining stems, which are only of the 

 moderate length of 5ft. or 6ft. The leaves are of the well-known 

 Convolvulus form. 



I find it a good plan to grow this subject amongst tall, and 

 early flowering plants, such as lupins, foxgloves, and lilies, the 



