31 8 ROCK GARDENS 



0. 7nontana. — Dwarf-growing, with silky foliage and blue flowers 

 in the summer. Seed and division. 



O. Lamhertii. — Silky foliage, and rosy-carmine flowers, in August. 

 A rare and beautiful species. 



Pachysandra procumeens (Euphorbiaceae) 



Dwarf-growing evergreen plant for a shady spot, with small 

 spikes of white flowers in March. 



P. ter7ninalis. — A hardy evergreen plant, with dark green, 

 leathery leaves and inconspicuous flowers. There is also a 

 variegated variety. Both like half shade. 



Papaver (Papaveraceae), Poppy 



Only two species of the Poppy family are suitable for the rock 

 garden. Both are of the easiest culture. 



P. alpina (syn. P. pyre?iaicu??i). — Sunny position in light loam. 

 Ver>' dwarf-growing, forming compact tufts of pretty, finely cut, 

 bluish-grey leaves. The flowers, which rise about 6 to 8 inches 

 over the foliage, are of various colours, there being white, yellow, 

 and scarlet in cultivation. It is difficult to transplant, so it is 

 advisable to raise from seed on the spot assigned to it. A very 

 dainty and attractive plant. The \2ir\Q\.y^Jlavifloru?n, has orange- 

 coloured flowers, and is rather hairy. 



P. niidicaule. — The Iceland Poppy is almost too wild a grower 

 for the rock garden, but is so showy and pretty that a place should 

 be found for it in the rougher parts. The original type had yellow 

 flowers, but every shade of orange, yellow, and red are in cultiva- 

 tion, besides a white form. It is practically only a biennial, so seed 

 should be sown annually, which business it generally looks after 

 for itself. 



Paradisea Liliastrum (Liliaceae) 



The lovely "St Bruno's Lily" should find a place in the rock 

 garden in some shady nook, or planted amongst the shrubs 

 adjoining. It is of the easiest culture, in any ordinary soil in 

 partial shade. Its pure white flowers, about 2 inches long, are 

 borne two to five on each stem, which rises about i8 inches from 

 the ground. There is a larger form, 7najo?', with longer stems and 

 bigger flowers. 



Parnassia (Saxifragaceae) 



Plants for a wet spot in the bog garden. 



P. caroliniana, — Requires a wet, marshy spot. The stem grows 

 from 1 8 inches to 2 feet high, and has large white flowers, i to i^ 

 inches across, and large leathery leaves. 



