Sempervivum
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WULFENII  Hoppe ex Mertens & W.D.J. Koch, 1831

Synonym Sempervivum globiferum  Wulfen 

Distribution : Eastern Alps; usually calcifuge, 1500 - 2700 m.

 

 

Description (according to 't Hart, Bleij & Zonneveld in IHSP, 2003) :

 

Rosettes open, 4 - 5 (-9) cm in diameter; stolons few, long, stout, to 10 cm.

 

Leaves oblong-spatulate, cuspidate, greyish-green, dark purple basally, 20 - 40 x 10 – 15 mm, slightly glaucous, margins somewhat involute towards the tip, marginal cilia strongly glandular,

absent in the upper part, younger leaves erect, gathered into a cone-shaped or bulb-like bud at the end of summer.

 

Flowering branches 10 - 30 cm.

 

Leaves deltoid-ovate, acute, clasping, spreading, ± 15 x 10 mm.

 

Inflorescence compact cymes with 3 short cincinni.

 

FIowers 10- to 15-merous, ± 2.5 cm in diameter, sepals connate for up to 2 mm, acute, sometimes purple-tipped, ± 6 mm,petals linear-lanceolate, acuminate, lemon-yellow, with a basal purple spot, ± 10 x 1 - 2 mm.

 

Cytolog: 2n = 36

 

Two subspecies :

 

Sempervivum wulfenii ssp. juvanii  (Strgar) Favarger & Parnell, 1990

 

Sempervivum wulfenii ssp. wulfenii

See also : Alan Smith, The Genus Sempervivum and Jovibarba, 1980

 




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