CHOICE. PLANTS FOR ROCK GARDENS — 187 
it. A few of these small kinds are S. decumbens, S. 
hacquetia, S. digitata nana, and S. pectinata. Three of 
these have white flowers, but S. digitata nana is a pretty 
pink. Unfortunately, this is scarce and difficult to 
obtain true, too often the ordinary species, which grows 
a couple of feet high, being supplied, whereas nana is only 
about a quarter that height. The plants will divide after 
about three years’ growth, the best time being just as 
new growth becomes visible. 
STATICE.—The ordinary sea lavenders, such as S. 
latifolia, S. gmelini, etc., are more suitable for border 
planting than for the alpine collection, but there are a 
few real miniatures, that are delightful little subjects for 
small pockets in the rockery. S. bellidifolia, and S. 
minuta are two such. They will thrive in ordinary soil, 
and are at home in gardens near the sea, although they 
make themselves just as happy inland. 
TANACETUM.—Here we have once again yellow-flowered 
plants, with highly ornamental silvery foliage. Thriving 
best in hot sunny positions, either T. herderi or T. 
argenteum make spreading clumps of elegantly cut foliage 
with flower heads at less than a foot high, the flowering 
period extending through the greater part of summer. 
TuHymus.—For fragrance alone the Thymes are indis- 
pensable, but among the dwarf and the creeping kinds 
we have plants that possess much beauty in both flower 
and foliage. The several varieties of T. serphyllum give 
us red, pink, or white flowers, and some have variegated 
foliage, whilst T. serphyllum lanuginosum has its leaves 
and stems thickly coated with woolly hairs which give 
