Sempervivum
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ALTUM   Turrill, 1936

Section Sempervivum

Distribution : Georgia (Caucasus); 1500 - 2000 m, known only from the type.

                         

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

Rosettes rather lax, 2.5 -  4 cm in diameter.

Leaves oblanceolate, abruptly mucronate-acuminate, light green, outer leaves with distinct scarlet tip when exposed to sun,  ± 19 x 8 mm, ± 3 mm thick.

Flowering branches 12 cm, leaves oblong, ± 20 x 8 mm.

Flowers 12- to 13-merous, to 3 cm in diameter, sepals spreading, petals carinate, red-purple with green keel, ± 12 x 3 mm, filaments red, anthers orange-red, styles red.

 

Very close to S. annae and S. ossetiense, but accepted provisionally. Borissova (1939: 16) included S. altum in the synonymy of S. pumilum, but the latter has smaller rosettes and 11- to 12-merous flowers.

See also Alan C. Smith, The Genus Sempervivum and Jovibarba, 1980

 




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