326 ROCK GARDENS 



rampant growth. Increased by division. A very pretty and 

 charming plant, of the easiest culture, and quite hardy. 



P. alba. — Sunny position in ordinary light soil. Of a dwarf habit, 

 only a few inches high. Leaves green, and smooth above, but 

 covered beneath with a white, silky down. Flowers white, with 

 an orange ring at base of petals. Blooms in June. Is of the easiest 

 culture, and not a rampant grower. A good plant. 



P. arg-en^ea.— Ord\na.ry soil. Creeping and dwarf habit, growing 

 only about 6 inches high. Foliage covered with a silvery down. 

 Flowers yellow. Of easy culture, and useful as a variety, though 

 not otherwise possessing any special charm. 



P. aurea. — Sunny position in light soil. Very dwarf habit, only 

 about 2 inches high. Leaves palmate, and fringed with silvery 

 hairs. Large yellow flowers, orange spotted at base. Blooms from 

 May to July. Is of easy culture, and increased by seed or division. 



P. calabra. — Sandy soil in sun. Prostrate habit ; undersides of 

 leaves silvery. Lemon-yellow flowers, produced during the summer. 

 Is of easy culture and worthy of a place. 



P. davurica. — Light sandy soil in sun. A dwarf-growing, 

 compact little bush, about 9 inches high, of almost prostrate 

 habit. Dark green, glossy leaves, and white flowers. Of easy 

 culture, and rather rare. An attractive plant that should be 

 more generally grown. It is generally considered a form of 

 P. fruticosa. 



P. fruticosa. — Light sandy soil and sunny aspect. Forms a 

 neat bush, about 2 feet high. Clusters of pretty yellow flowers, 

 freely produced during the summer. A very desirable and useful 

 shrub for massing, and of easy culture. Increased by cuttings. 



P.f. humilis. — Is a quite dwarf form of the above, with yellow 

 flov/ers from spring to autumn. 



P. Friedrichseni. — Ordinary soil, open aspect. A shrub of erect 

 habit, growing about 3 to 4 feet high, and covered during the 

 summer with large, sulphur-coloured flowers. A most charming 

 shrub, of quite easy culture, and hardy. A hybrid, P. fruticosa x 

 davurica. 



P. nitida. — Dry, light, poor, sandy soil in a sunny position. 

 Only grows about 2 to 3 inches high. Leaves covered with a silvery 

 down. Flowers delicate rose-coloured, and borne from June to 

 September. Of easy culture, but a shy bloomer, except in poor, 

 light soils. A plant for a choice place. Readily increased by 

 division. 



P. nivalis. — Ordinary light soil in an open position. Grows 3 

 to 6 inches high. Leaves densely covered with a silky down. 

 Flowers white. Blooms in July. 



P. nivea. — Light soil and open position. Very dwarf habit. 



