SENKCIO. 
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glaucous-green fleshy leaves, and large flat-headed 
trusses of pinkish-purple blossoms in September and 
October. It is easily increased by division in spring. 
The same may be said of 8. Maximowiczi, 1 1 to 2 feet 
high, with bright yellow flowers in July. 
^ SEMPERVIVUM (Houseleek ).— There are 40 or 50 
species of Houseleeks easily recognised by their rosettes 
of thickish fleshy triangular leaves, often delicately 
webbed. They flourish in dry, sandy soil in the rock 
garden, against or upon old walls and ruins, and are 
easily multiplied by means of the offsets that spring- 
out from the base of most of them. The best known 
kinds are probably the common Houseleek ( S.tectorum ), 
which flourishes literally on old roofs ; and the Spider- 
web Houseleek (8. arachnoideum ), a distinct little 
Pyrenean species with bright red flowers and dense 
rosettes of wedge-shaped leaves veiled with white cob- 
webby hairs. 
SENECIO.— The common Groundsel (8. vulgaris ) is 
undoubtedly the best-known and most maligned 
representative of this genus, which contains about 
900 others. Comparatively few are of any value for 
the flower garden, and such large and vigorous kinds 
as 8. Doria, S. macrophyllus, 8. sagittifolius , and 
S. sarracenicus , are best in the rougher parts of large 
gardens where the boldness of their foliage will not be 
out of place. They are all yellow flowered, except 
sagittifolius, which is creamy-white. 
Perhaps one of the most charming Senecios is 8. 
pulcher, from Buenos Ayres. It grows 2 to 3 feet 
high, and has ovate, lobed, cut or coarsely-toothed 
leaves. The beautiful rosy-purple flower-heads, each 
