Subspecies, varieties, forms and cultivars of plants belonging to the Sempervivum calcareum group

• Sempervivum calcareum Jord.
• Sempervivum calcareum cv. Benz: is a large variant with more than the usual number of leaves.
• Sempervivum calcareum cv. Griggs Surprise: has abnormal congested rosettes, leaves grey-green, round and hollow without an opening at the tip, each leaf ends in a red thorn-like beak, which is often double
• Sempervivum calcareum cv. Mrs. Giuseppi: is more compact with leaf-tips deep red.
• Sempervivum calcareum cv. Pink Pearl
• Sempervivum calcareum cv. Sir William Lawrence: similar to 'Mrs Giuseppi' but rosettes larger and more spherical, leaf-tips red.
• Sempervivum greenii Baker: has smaller neater rosettes.