Sempervivum tectorum L.

Common Houseleek

Rosettes mostly 2-10 cm wide, open. Leaves mostly 50-60, 3-8 cm long, hairless, green, often with purplish apices, sharply pointed. Flower clusters flat-topped, on hairy stems to about 30 cm long. Flowers mostly 12-16-parted, whitish or purplish with red lines giving a purplish effect; summer.

A common and extremely variable species with many hybrids and garden forms.

Europe.

Source: Stajsic, V.; Spencer, R.; Forster, P.; Thompson, A. (2002). Crassulaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 3. Flowering plants. Dicotyledons. Part 2. The identification of garden and cultivated plants. University of New South Wales Press.

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Distribution map
kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     [Saxifraganae]
order      Saxifragales
family       Crassulaceae
genus        Sempervivum L.