ROCK-GARDEN PRIMULAS 159 



planted between large stones, with the rosettes of leaves in 

 a vertical position. The plants should be wedged in the 

 crevices tightly with smaller stones and stiff, loamy soil, 

 and thrive best with an eastern or western aspect where 

 they do not get too much sun. They are somewhat variable 

 in foliage, some of the leaves being lobed and having a 

 conspicuous white margin. The flowers open in May. 



P. carniolica. A beautiful and distinct plant from 

 the Alps of Carinthia, where it is found at an elevation 

 of nearly 4,000 feet above sea-level. It has smooth 

 green leaves in a rosette, and heads of bluish-purple 

 flowers in April. It thrives best in a half-shady position, 

 with plenty of moisture, and should be planted in gritty 

 soil or wedged between rocks in a sloping position. 



P. Clusiana. One of the most beautiful Primulas 

 contained in this section, and a native of the calcareous 

 Alps of Austria, growing at high elevations. It has dark 

 green leaves slightly margined with white, while the 

 large violet-carmine flowers are very handsome. It 

 differs from P. glaucescens which is often sold for it 

 in having the petals cut, or divided down to the middle. 

 It is a free grower, forming large tufts, and succeeds well 

 in half-shade, planted in stony, loamy soil. It flowers 

 freely in April. 



P. glaucescens. Also known as calycina, this is 

 closely allied to the above, from which it is distinguished 

 by the bluish-grey leaves, which have a horny edge, and 

 by the lobes of the corolla being cut to only one-third 

 of their length. The large, handsome flowers, of carmine- 



