The genus consists of plants which are hardy in England, though native to the European Alps. The species form clumps and are often seen growing in rock gardens, but when planted in pans they make interesting additions to the succulent plant collection. Species hybridize easily and there are many forms. The number of distinct species has been reduced to about 30.
Sempervivum arachnoideum. A beautiful plant, commonly known as the “cobweb plant” because of the very fine hairs spun like a cobweb between the tips of the. Flowers, carmine. There are a number of varieties differing from one another by the size of the rosettes. The growing period is in summer. The rosettes die after flowering.
Other species to be recommended are: 5. Allionii, S. calcareum, S. Funckii, S. soboliferum, S. tectorum.
MONANTHES. There are several species, which have small dense rosettes of, and the plants form neat little cushions.
Monanthes laxiflora. An interesting small plant
Aeonium arboreum. Grows to a heigh 3 feet. The robust, or trunk, terminates I flat rosette of elongated, tightly compressed gr« leaves 3 to 4 inches in length and about £ ii broad, with white hairs along the edges. The flo stalk forms a long truss of golden-yellow flow which appear in spring.
Aeonium arborcum atropurpureum. A purp leafed form commonly met with in collections.
Aeonium caespitosmn. A low-growing leafy pis with shortand branches. The leaves, whi are green with reddish stripes and have many wh hairs along the edges, form dense rosettes. Requii as much sun as possible.
Aeonium domesticum. The best-knov species, especially in the variegated form. Tl rosettes are loosely formed, the flower yellow.
Aeonium sedifolium. Canary Islands. A smt species, 4 to 6 inches high, with woodyan branches. Flower yellow.
Aeonium labxdaeforme. Propagation is easy from, an it is possible to from leaves. The mos suitable are medium-sized leaves pulled off an< placed in a sandy .
GREENOVIA, The genus is a small one consisting of 4 species, natives of the Canary Islands. They an of easy cultivation, especially suitable for growing in window-sills. The plants require a rich bui with many leafy stems. The leaves are thick and tvary from yellow to purplish. The growi season is in summer, when watenng should frequent. In winter, plants should be kept on t dry side.