316 FLOWERS OF GARDEN AND GREENHOUSE 
a shrubby subject, with unbranched stem, 2 feet high, and oval-oblong 
evergreen leaves. It blooms throughout the year; and the involucral 
bracts are sticky. It is a nearly hardy perennial, and was introduced from 
Peru in 1803. The same glutinous secretion will be found on the unopened 
heads of G. grandiflora, a hardy biennial, which has a stem from 24 to 
3 feet high, branching near the top. The heads are about an inch and a 
half across, and appear from June to September. It is a native of Texas, 
introduced in 1851. G. inuloides is a shrubby plant, with stem about 
1} foot high, and oblong-lance-shaped evergreen leaves, saw-toothed near 
the end. The flower-heads appear from June to September. Introduced 
from Mexico (1815). Grindelias succeed best in a compost of loam and 
peat. They are propagated by cuttings, or divisions of the root, and by 
sowing seeds in spring or autumn, giving them the protection of a green- 
house or frame. 
Baccwaris (Greek name, from Bacchus, the god of wine, owing to the 
vinous odour of the roots). A genus of about two hundred species of herbs, 
shrubs, and small trees, with alternate leaves and terminal flower-heads 
with usually white rays. They are of less interest horticulturally than _ 
in popular medicine in their native countries, which are all on the 
American continent. Baccharis halimifolia, however, is occasionally 
found in gardens, and is known as the Groundsel Tree. It is a shrub 
growing to a height of from 6 to 12 feet, with angular branches and 
oblong-wedge-shaped, coarse-toothed leaves. The flower-heads contain all 
male or all female florets; they are white, but the female heads are the 
handsomer on account of the conspicuous silvery pappus. They flower 
in July. This species was introduced from the Northern United States 
in 1683. It is quite hardy, and is propagated by cuttings. Ordinary 
garden soil will be found to suit it, 
SANTOLINA (probably from Santonica, a classical name). A genus 
of about eight species of fragrant, hardy, sub-shrubs from the Mediter- 
ranean region. They are allied to Achillea, but the flower-heads have 
no rays, and the base of the corolla-tube is prolonged into a kind of hood 
which envelops the summit of the ovary. The best-known species is 
Santolina Chamecyparissus, the Cotton Lavender, which was introduced 
from South Europe in 1573. It is a small branching bush about 2 feet 
high, clothed with hoary down. The twigs are wiry, and densely 
covered with very slender leaves, which are beset with four or six rows 
of projecting teeth. The yellow flower-heads are solitary at the end of 
the twigs, and appear in July. The var. incana is similar, but dwarf, 
and covered with silvery down. §. alpina is a prostrate species with 
