205 
Gentiana acaulis ears Gentian). Alps. 4 in. Real blue fls. May. 
Geranium argenteum. S, Alps. 6 in. Silvery Ivs., mauve pink fls. July. 
aritty, well- e ained soil. 
Hypericum olympicum., Greece. 6 in. Trailing stems, yellow fls. June- 
uly, 
Lithospermum purpurco-ceruleum. S. W. Europe. Trailing shrub, dark 
blue fls. June. 
Penstemon glaber (Blue Penstemon). N. America. 1 ft, 6 in. Large 
right blue fls. July, August. 
Penstemon rupicola. Rockey Mountains. Very dwarf, rose-crimson. May. 
Polygonum affine apa Knotweed). Himalayas. 1 ft. Prostrate 
growth, red fis. racemes. 
Primula Auricula eens Alps. 6 in. Golden yellow fls. April 
Primula frondosa. Balkans. 4 in. Rosy lilac fls. Needs cool, well-drained 
situation. 
Silene acaulis (Moss Campion). Alps. Arctic Regions. Dwarf mossy tuft 
ith bright pink fls. May. 
Statice (em eria) cespitosa. Spanish Sierras. Tufted, dwarf. Pale pink 
. May, June. 
Statice (Armeria) juncea. Corsica. Tutted, “Gyan sb inksdtis: yevicy. ascat- 
tered fls. to Novembe 
Trollius pumilus (Dwarf Sia Himalayas. 6 in. Bright yellow. 
pril, May. 
Veronica ee (Creeping Speedwell). Corsica. 4% in. Creeping, pale 
blue fls. May. Requires moist cool situation. 
Wahlenbergia Pumilio. Dalmatia. 3 in. Tufted and floriferous,  bell- 
shaped lilac fls. June 
i 
The lists could be greatly extended by the addition of dwarf coni- 
fers, such as: Siebold Arborvitae ( Thuja orientalis var. Sieboldi) ; 
Prostrate Juniper (Juniperus cominunis var. depressa) ; Dwarf 
Hinoki Cypress (Chamecyparis obtusa var. nana); Moss Reti- 
nospora (Chamecyparis pisifera var. squarrosa) ; and the Dwarf 
Alberta ‘Spruce, Picea glauca var. conica (sometimes sold errone- 
ously as P. Albertiana), a very slow growing form (Fig. y) 3 terns 
such as: Ebony Spleenwort (Asplenium platyneur on) ; Maidenhair 
Spleenwort (Asplenium trichomanes) ; Wal king-Fern (Campto- 
sorus rhizophyllus) ; Purple Cliffbrake (Pellea air opurpurea) 5 
Common Woodsia (MW oodsia obtusa) ; mountain species of bulbs; 
and many of our own native alpines. 
ne true rock gardener gets his greatest thrill, however, from 
those species that are reluctant to thrive in his climate. To grow 
the more difficult and capricious alpines is indeed one of the most 
— 
Oe 
