ALPHABETICAL LIST OF PLANTS 295 



Jankaea Heldreichi (Gesneriaceae) 



A plant very nearly allied to the Ramondias, but most difficult to 

 grow. It requires a northern aspect, in such a position that no 

 moisture can fall on its leaves, while at the same time it likes a 

 moderate amount at its roots. The best way to achieve this is to 

 plant in a miniature cavern, so arranged that no drip can fall on it, 

 though soaking the ground around. It requires sandy peat. It 

 forms flat rosettes of thick leaves, coated with white silvery down. 

 Lovely, pale violet-blue flowers, and shaped rather like a Soldanella. 

 One of the gems for the rock garden. 



Jasione (Campanulaceae), Sheep's Scabious 



A genus of plants bearing flowers resembling a scabious. They 

 are not of much interest for the rock garden. 



J. numilis. — Requires a dry, well-drained position in sandy loam. 

 Of spreading, tufted habit, growing about 6 inches high. Flowers 

 small and of a bright blue colour, borne in July and August. It is 

 not very hardy and needs protection from damp and cold during 

 the winter. Propagated by seed sown in the autumn. 



J.Jankea. — Requires light sandy soil in sunny position. Forms 

 rosettes of a deep green colour, from which rise stems about 9 inches 

 high, bearing heads of deep blue flowers in July. Increased by 

 seed. 



J. perennis. — Sunny position in light loam. Bears dense heads 

 of bright blue flowers in July. Of taller habit than either of the 

 preceding. Often over 12 inches in height. Increased by seed 

 sown in autumn. 



Jeffersonia diphylla (Berberidaceae) 



A plant for a shady spot in the raised parts of the bog garden, in 

 sandy peat. Leaves large and two-lobed. Flowers white, with 

 yellow stamens, and about an inch across, freely produced in April. 

 Increased by division during the winter, or by seeds sown as soon 

 as ripe. 



Kalmia (Ericaceae), American Laurel 



Evergreen shrubs, and among the most beautiful grown. They 

 are of the greatest value for the rock garden. They all require a 

 peaty soil. 



K. angustifolia. — Rather damp, peaty soil. It grows about 18 

 inches high, and of graceful habit. Clusters of rosy-pink flowers 



