HOUSELEEKS 205 
situations. S. rosewm, however, selects moist alpine rocks, whilst 
S. anglicum grows upon maritime rocky cliffs, and quite abundantly 
on isolated rock masses with scarcely any earth. In the garden they 
will grow almost anywhere, in the driest parts of the rock-garden, in the 
sunny border, or as parts of geometrical designs in ornamental bedding. 
Tender species like S. Siebuldii and S. Ewersii must be potted and given 
greenhouse protection. For potting, a loamy soil should be used, and a 
stone or two plunged in it, as they like to develop their roots round them. 
Propagation may be effected either by seeds, cuttings, or divisions. 
Cuttings may be taken at any time, but division of the clumps should 
be performed in spring to preserve their neat and regular appearance. 
Description of Plate 97 shows the upper portions of the flowering 
Plates 97 and 98. stems of Sedwm spectabile. Figures 1 and 2 are separate 
flowers, enlarged and cut through respectively. 
Plate 98 represents two of the greenhouse species—A, S. Sieboldii, 
and I, an enlarged flower; B, S. sarmentosum. 
HOUSELEEKS 
Natural Order CrassuLAcEm. Genus Sempervivum 
SEMPERVIVUM (the old Latin name, from semper and vivum, living for 
ever). A genus of about fifty succulent herbs or under-shrubs, with the 
radical leaves forming dense rosettes, and the stem-leaves alternate. 
calyx is divided into six or many parts, the sepals agreeing in number 
with the divisions of the calyx. The stamens are usually twice the 
_ number of the petals, half of them sometimes imperfect or transformed 
into carpels. Carpels as many as petals; styles thread-like. The species 
are natives of Europe, North Africa, Madeira, the Canaries, Western Asia, 
_ and Himalaya. 
Sempervivum tectorum, the well-known Houseleek, 
was introduced to this country from the Continent so 
ng ago that there is no record of its first appearance, and it is 
former from the Canaries, and the other from Italy. S. soboliferum, 
if—-33 
