I16 ALPINE PLANTS 
is a double flower that loses nothing of daintiness and 
charm but gains substance that enables it to last con- 
siderably longer than the single type. A. pyrenaica 
flowers when the others named have finished their display, 
and occasionally a white-flowered form of A. vernalis is 
met with, but except for the interest in its novelty it 
cannot claim greater merit than the bright and more 
cheery yellow type. Adonis are very hardy so far as their 
ability to stand frost is concerned, but they must have 
a deep root run in light rich soil, well drained so that 
the roots are free from stagnant moisture in winter. They 
can absorb and indeed require copious supplies of water 
during the growing period. 
The plant dislikes disturbance at the root, and although 
stock may be increased by division of a strong clump 
it is better to leave the plants undisturbed for several 
years, sustaining them by mulching. A batch of seed- 
lings thinly planted over a fairly wide area, with the 
whole surface of the soil sown with seed of the sweet little 
annual Sedum ceruleum, will grow and increase in strength 
year by year, and such a colony will present a glorious 
display each spring, the carpet of blue-flowered sedum 
keeping the adonis cool in summer. Although only an 
annual, the sedum may be depended upon to reproduce 
itself from seed, which is plentifully produced. 
JETHIONEMA.—These are extremely beautiful little 
plants, somewhat resembling the familiar candytuft but 
more refined and elegant in every character. The A‘thio- 
nemas are hardy and easy to grow, with the one proviso 
that quite young plants shall be planted from pots and 
