Sempervivum Sempervivum, Griseb.

19. S. marmoreum Griseb. View in CoL , Spicil. Fl. Rumel. 1: 329 (1843)

( S. schlehanii Schott ).

Stolons long, stout; rosettes c. 6 cm in diameter, open. Leaves 25 x 12 mm, obovate, mucronate, puberulent when young but glabrous at maturity except for stout, deflexed marginal cilia, olive-green, often tinged with red. Flowering stem c. 20 cm; cauline leaves 3 cm, oblong-lanceolate, acuminate; inflorescence up to 7 cm wide. Flowers 12-merous; petals 10 mm, red with white margins; filaments hairy at the base. 2« = 34. • Balkan peninsula, extending northwards to Moldavia and S.E. Czechoslovakia. Al Bu Cz Gr Hu Ju Rm Rs (W).

S. reginae-amaliae Heldr. & Guicc. ex Halâcsy , Consp. FI. Graec. 1: 580 (1901), from Greece and S.E. Albania (? and S. Italy), appears to differ only in being more compact and smaller in most of its parts, and in retaining a fine pubescence on its leaves even at maturity. It is probably best regarded as a subspecies or variety of 19.