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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

Val Veny, Aosta, Italy
Photo Olivier Legros

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