ALPHABETICAL LIST OF PLANTS 331 



erect, and about 9 inches high. Both leaves and flowers are 

 fragrant. Quite a new introduction from China, and very hand- 

 some. It has been proved to be hardy, and of easy culture. 



P. Fosteri. — Half shade in sandy loam. Dwarf habit, forming 

 compact tufts with large carmine-coloured flowers. Vigorous and 

 free-blooming, this hybrid between P. viscosa and P. minima is 

 one of the best kinds we have. 



P. glaucescens (syn. P. calycind). — Likes a half-shady position in 

 calcareous loam, and does well planted in fissures of rocks. Forms 

 a tuft of bluish-grey, hard leaves. Loose umbels of carmine-lilac 

 flowers in March and April. A good plant, of easy culture. 



P. glutitiosa. — Requires partial shade in moist, peaty soil 

 mixed with sphagnum. Leaves long and narrow. Flowers purple, 

 borne on stems 4 to 5 inches long. A difficult plant to cultivate. 

 A native of granite soils. 



P. gra?idis.—V2in\2^. shade in moist, loamy soil. Foliage large 

 and handsome. Small yellow flowers, of drooping habit, and pro- 

 duced in umbels on stems about 12 inches high. Quite hardy and 

 vigorous. Flowers freely produced in the spring. Increased by 

 seed or division. 



P. hirsuta. — Should be grown between rocks or stones in sandy 

 peat or loam plentifully mixed with stones. It forms rosettes of 

 coarse, downy leaves, serrated at the edge. Flowers purplish- 

 crimson, borne on stalks about 4 inches long. It is a granite-loving 

 plant, and not difficult to grow. This plant is rather variable in 

 colour, and of the several forms the best is that known as P. nivalis^ 

 which has lovely pure white flowers, and is of easiest culture, and 

 increased by division. Other plants known as P. ciliata^ and its 

 varieties cocciiiea and purpurea^ are forms of this plant, both of 

 which are well worth growing. 



P. integrifolia. — Half-shady position in sandy loam and pieces 

 of limestone. Forms diminutive, dense, crowded tufts of smooth, 

 shiny leaves lying close to the ground. Flowers rose-coloured, and 

 borne on very short stems rising scarcely above the leaves. Rather 

 a shy bloomer in cultivation, and not an easy plant to grow. 



P. involucrata. — Likes a shady position in very moist, sandy 

 loam. Fragrant flowers, creamy white, with a yellow centre, and 

 borne in umbels on stems 6 inches high. This plant is practically 

 only a biennial, and so should be raised annually from seed, which, 

 if good, germinates quickly. 



P. japonica. — Though not very particular as regards soil or 

 aspect, so long as there is a sufficient amount of moisture, it is finer 

 and more effective when grown in half shade in rich, moist loam. 

 The flowers vary considerably in colour, from white to deep crimson, 

 and are borne in whorls on stems from i to 2 feet in height. It is 



