Sempervivum
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PITTONII  Schott & al. 1854

Synonym : Sempervivum braunii  Maly (1868) (nom. illeg.)

Section Sempervivum

Distribution : E Alps (Austria : Styria near Kraubath); serpentine rocks.

 

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

Rosettes subglobose, 2.5 - 5 cm in diameter, forming dense tufts.

Stolons slender or stout, 2 - 3 cm.

Leaves crowded, oblong-spatulate to lanceolate-obovate, apiculate, 12 - 25 x 5 - 7 mm, pubescent, greenish, with a conspicuous dark purple or reddish-brown tip, the marginal cilia unequal in length, often with a red gland.

Flowering branches 5 - 15 (-20) cm, leaves imbricate, lanceolate, acute, purple tipped, erect, ± 25 x  ± 7 mm.

Inflorescences 3- to 15- flowered cymes with 3 cincinni.

Flowers 9- to 12- merous, 2 - 2.5 cm in diameter, sepals connate for up to 3.5 mm, acute, green, 3 - 7 mm, petals linear-lanceolate or oblong-lanceolate, acuminate, greenish-yellow, 10 - 14 x  ± 1 mm, filaments pale yellow, almost glabrous, anthers yellow.

Cytology : 2n = 64

 

Known from only one locality near Kraubath. Highly endangered due to mining activities.

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




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