x barbulatum Schott, 1853
Parentage : Sempervivum arachnoideum x S. montanum.
Synonyms :
Sempervivum x delasoieii Lehmann & Schnittspahn (1860) / Sempervivum x barbulatum nvar. delasoieii (Lehmann & Schnittspahn) Rowley (1958)
Sempervivum x elegans Lagger (1873)
Sempervivum barbatulum Baker (1874)
Sempervivum x hausmannii Auersdorf ex Nymann (1878) (nom. illeg.)
Sempervivum oligotrichum Baker (1879)
Sempervivum x hybridum Brügger (1880) (nom. illeg.)
Sempervivum x dolomiticum Huter ex Koch (1892) (nom. illeg.)
Sempervivum x cerdanum Gautier (1898)
Sempervivum x foucaudii Gautier (1898)
Sempervivum x jeanbernatii Camus ex Rouy & Camus (1901)
Sempervivum x timbalii Camus ex Rouy & Camus (1901)
Sempervivum x montaniforme Huter (1905)
Sempervivum x noricum Hayek (1909) / Sempervivum x barbulatum nvar. noricum (Hayek) Rowley (1958)
Sempervivum x ausserdorferi Huter ex Hegi (1922)
Sempervivum x cerbarum Correvon (1924) (nom. inval.)
Sempervivum x hookeri hort. ex Praeger (1932)
Sempervivum x barbulatum nssp. etruscum Donati & Dumont (2004)
Distribution : Widespread wherever the parents co-occur : Alps, Pyrenees, Corsica, Apennines.
Description (according to Praeger, 1932) :
Mostly minute, closely tufted.
Rosettes about 1 cm across.
Leaves elliptic-oblong, blunt, about 7 mm long, finely and more or less densely glandular-pubescent on face and back, glandular-ciliate on edges, the apex bearing a tuft of longer woolly white hairs pointing forward or spreading.
Offsets very minute, on filiform short bare stems.
Flowering stem 5 cm high, clothed with rather larger similar leaves.
Inflorescence about 6-flowered, glandular-hairy like the stem.
Flowers 10-parted, 2 cm across, purplish rose-coloured, calyx green, glandular-pubescent, sepals lanceolate, acute, petals lanceolate, acuminate, 1 cm long, glandular-pubescent on back, edges, and upper part of face, stamens purple, tapering, 6 mm long.
Flowering time : July