336 ROCK GARDENS 



p. argenteum. — Shrubby habit, growing only a few inches high. 

 Silvery foliage. Flowers yellow. 



P. densiim. — Dwarf, shrubby plant, with silvery, fern-like foliage. 

 Flowers dull yellow. 



P. Hausknechi. — Silvery foliage and yellow flowers. Would grow 

 in the wall garden. 



Pyrola (Ericaceae), Wintergreen 



A genus of dwarf evergreen, hardy plants of much beauty, but 

 some rather difficult to cultivate. 



P. elliptica. — Half-shady position in moist, sandy, and peaty soil. 

 Grows about 6 inches. White campanulate flowers in racemes 

 during June and July. Increased by division. Pretty, and not 

 specially difficult to cultivate. 



P. incarnata. — Half shade in moist, sandy vegetable soil. 

 Rosettes of roundish leaves. Grows about 6 to 8 inches high. 

 Flowers rosy-red colour. Hardy, but difficult to grow with any 

 success. It is very attractive, and about the prettiest of the genus. 

 Propagated by division. 



P. rotundifolia. — Half shade in moist, peaty, and sandy soil. 

 White fragrant flowers, borne in drooping racemes on erect stems 

 about 6 to 12 inches high. Leaves roundish, forming rosettes. 

 Blooms in the summer. Increased by division. Not at all difficult 

 to grow, and a very charming little plant. 



P. uniflora (see Moneses uni flora). 



Pyrus (Rosaceae) 



This large genus gives some very beautiful and suitable species. 



P. Maulei (syn. Cydonia Maulei). — Ordinary soil and open posi- 

 tion. Dwarf habit. Flowers bright red, followed by golden-yellow 

 fruit. A very beautiful spring-flowering shrub. 



P.prost7'ata (syn. Cydonia prostrata). — Ordinary soil; open situa- 

 tion. Prostrate habit. Rich crimson-coloured flowers in spring. 

 Also a very lovely shrub, of easy culture. 



Pyxidanthera barbulata (syn. Diapensia barbulata) 



A very dwarf little evergreen shrub, only growing about 2 inches 

 high. Requires a sunny position in nearly pure sand, with a very 

 little vegetable loam mixed with it. The solitary white or rose- 

 coloured flowers are stalkless, and borne on the branches in pro- 

 fusion during early summer, A very lovely little plant. Hardy, but 

 not easy to cultivate. Increased by division. 



