Sempervivum


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Sempervivum

 

a genus of plants of the family Crassulaceae. They are perennial herbs with fleshy, alternate, sessile leaves (the lower leaves are in radical rosettes). The shoots that do not bear flowers are in the form of spherical rosettes. The regular, bisexual flowers are yellowish, pink, or purple and gathered in cymose-paniculate inflorescences. The double perianth is for the most part six-to 20-parted. The fruit is multiple.

There are approximately 30 species of Sempervivum, distributed in Europe, the Caucasus, Asia Minor, Southwest Asia, and northwestern Africa (Atlas). The plants grow on rocky slopes in alpine and subalpine zones. Eleven species are found in the USSR, primarily in the Caucasus. In the European USSR, they grow in dry, sandy places. The species S. zeleborii and S. soboliferum, which are often separated into the genus Jovibarba, are often found in pine forests. The young rosettes and leaves of S. soboliferum are edible. Many species of Sempervivum are cultivated as ornamentals.

References in periodicals archive ?
Take your Sempervivum plant and carefully pull apart the different rosettes.
MEDICAMENTO F (1,1 ml ampolla) Galium aparine D3, Galium album D3 ana 0,44[micron]l, Sedum acre D3, Sempervivum tectorum D4, Clematis D4, Thuja D3, Caltha palustris D3, Ononis spinosa D4, Juniperus communis D4, Hedera Helix D4, Betula alba D2, Equinacea angustifolia D5, Calcium fluoratum D8, Phosphurus D8, Aurum metallicum D10, Argentum D8, Apis mellifica D12, Acidum nitricum D6 ana 0,55[micron]l, Urticaria urens D3 ana 0,22[micron]l.
Genera in this family include Crassula, Kalanchoe, Sedum, Aeonium, Echeveria, Sempervivum and Dudleya.
50-54 Hens and chicks, Sempervivum 35-47 houseleek Jade plant Crassula argentea 50-60 (Crassula portulaca, Crassula arborescens) Kalanchoe Kalanchoe spp.
The following is a list of both nectar and host plants: Achillea, allium, antirrhinum, aquilegia, armeria, artemesia, ascelepia, boltonia, buddleia, campanula, caryopteris, centranthus, chelone, coreopsis delphinium, dianthus, digitalis, echinacea, erigerion, erynigium, eupatorium, foeniciculum, gaillardia, gaura, helenium, hemerocallis, hypericum, hyssops, inula, leucanthemum, liatris, lobelia, lychnis, lysimachia, malva, monarda, nepeta, origanum, penstemon, perovskia, phlox, physotegia, rudbekia, rue, salix, salvia, sedum, sempervivum, thalictrum, thymus, valeriana, veronica, veronicastrum, humulus, loncera, campsis, loncera, and viola.
30 [degrees] C, Mt Domogled, 1000m, 2 ppm, full sun), approaching the ones reported in Sempervivum arachnoideum winter minima --25 [degrees] C (air temp.
Sempervivum arachnoideum: mid green to red rosettes cobwebbed with white hairs and dainty red pink flowers Finish with a top dressing of pea-gravel or a mini scree material; I use slate scalping, commonly used for surrounding pipe works, as it is excellent value.
Left: A container of false aralia is underplanted with a living mulch of echeveria, sempervivum, and senecio.
Once established, a gravel garden featuring drought-tolerant plants such as phormium, blue grass, iris, alpine pinks and sempervivum needs almost no maintenance.
Some plants, such as sempervivum (houseleek), develop offsets which can be carefully lifted with a trowel and replanted.