Lime houseleek

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Lime houseleek
Lime houseleek (Sempervivum calcareum)

Lime houseleek ( Sempervivum calcareum )

Systematics
Family : Thick-leaf family (Crassulaceae)
Subfamily : Sempervivoideae
Tribe : Semperviveae
Genre : Hauswurzen ( Sempervivum )
Section : Sempervivum sect. Sempervivum
Type : Lime houseleek
Scientific name
Sempervivum calcareum
Jord.

The lime houseleek ( Sempervivum calcareum ) is a species of the genus of houseleek . It occurs endemically in a demarcated area in the southwestern Alps . It specializes in calcareous subsoil and tends to grow in lower altitudes. It was first described by Alexis Jordan in 1849.

features

Rosettes of Sempervivum calcareum
Flowers of Sempervivum calcareum

The plants form rosettes from 4 cm to 10 cm in diameter, mostly they show a diameter of 6 cm, and their flowering shoots reach a height of 6 cm to 25 cm. The rather small flowers are very whitish in color, mostly whitish-pale pink or white-greenish. They are usually 8 to 10 digits, sometimes up to 12 digits. The leaf rosettes have many mostly bluish-green leaves with red-brown, sharp tips. The tip coloring is comparatively intense and very noticeable. The species forms strong runners up to 4 cm long.

The chromosome number is

Occurrence

The species occurs in the Maritime Alps and in the Dauphiné . Its vertical distribution is between 500 m and approx. 1500 m. Thus it grows in comparatively deep areas. It mostly occurs on lime, but can also be found on neutral substrates and in hot environments.

use

The species is cultivated in rock gardens and collections. There are a number of locality forms and partly also cultivated varieties, which differ in the color of the leaves. Some are also characterized by their very small rosette size or by a particularly large number of leaves.

literature

  • Erwin Geiger: The Rotspitz (en) houseleek - Sempervivum calcareum JORD. In: Avonia . Volume 27, Number 1, 2009
  • Henk 't Hart, Bert Bleij, Ben Zonneveld: Sempervivum . In: Urs Eggli (Ed.) Succulent lexicon. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN = 3-8001-3998-7, p. 351 f.
  • Manuel Werner: Houseleek species in the Alps. Sempervivum and Jovibarba . In: Avonia . Volume 28, Number 4, 2010, pp. 129, 138-141.

Individual evidence

  1. ↑ Observ. Pl. Nouv. 7:26
  2. ↑ See Henk 't Hart, Bert Bleij, Ben Zonneveld: Sempervivum . In: Urs Eggli (Ed.) Succulent lexicon. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN = 3-8001-3998-7, p. 351 f. and Manuel Werner: Houseleek species in the Alps. Sempervivum and Jovibarba . - In: Avonia - The specialist journal of the Society for Other Succulents 28: 4 (2010), pp. 138, 140
  3. ↑ Cf. Manuel Werner: Houseleek species of the Alps. Sempervivum and Jovibarba . - In: Avonia - The specialist journal of the Society for Other Succulents 28: 4 (2010), pp. 138, 140
  4. ↑ Erwin Geiger: The Rotspitz (en) houseleek - Sempervivum calcareum JORD. In: Avonia . Volume 27, Number 1, 2009

Web links

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