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THE BOOK OF GARDENING. 



August in warm localities. The typical plant has deep blue flowers 

 but forms with white and pale blue flowers are also known, 



Clintonia pulchella, properly called Downingia, is a charming 

 little plant, 6in. high, admirable for rockwork, bedding, or for 

 edgings ; it has blue, white, and yellow flowers, produced during the 

 late summer. 



Cosmos bipinnatus (Fig. 135), 2ft. to 3ft, is a graceful plant, 

 with fine feathery foliage and large flowers like single Dahlias; 

 they are rose or purple in colour, with yellow disks. Several 

 varieties have originated with white, pink, and rose-coloured 



Fig. 135. — Cosmos bipinnatus. 



flowers, whilst the form sulphureus has rich clear yellow flowers, 

 and does not grow quite so tall as the others. 



Daturas. — See "Sub-Tropical Bedding." 



Grammanthes gentianoides, 3in. high, forms a little tuft of 

 fleshy leaves, and is covered with numerous star-shaped flowers, 

 varying in colour from pale yellow to deep red. It flowers in 

 July. The seed should be sown in heat, during March, and the 

 seedlings planted out in May in a dry, warm, sunny situation. 

 It is suitable for rockwork, edgings, and also for pot culture. 



Helipterum Sandfordi (Humboldtiamtm) is a dwarf, branched 

 everlasting, growing from i2in. to i8in. high, and flowering about 

 July ; it has dense corymbs of golden-yellow flowers which are 



