x rupicola Kerner, 1870
Synonyms :
Sempervivum huteri Hausmann ex Seboth & Graf (1876)
Sempervivum x theobaldi Brügger (1880)
Sempervivum braunii Facchinetti (1905) (nom. illeg.)
Sempervivum x pernhofferi Hayek (1909) / Sempervivum x rupicola nvar. pernhofferi (Hayek) Rowley (1958)
Parentage : Sempervivum montanum x S. wulfenii.
Naturally occurring.
Description (according to Praeger, 1932) :
Rosettes 4 - 5 cm across, smaller than S. wulfenii.
Leaves oblong-obovate, broadest in upper third, somewhat narrowed downwards, base red, abruptly and shortly mucronate at apex, glabrous or somewhat glandular-pilose on face, glandular-hairy on back, shortly ciliate on edges.
Flowering stem 8 - 15 cm long, stem-leaves glandular-hairy, red-tipped.
Flowers 10 - 18 mm across, petals pale yellow to dirty pink, with red streaks, filaments reddish-yellow or purple.
This description applies to the commoner form of the hybrid. The cross in which S. montanum ssp. stiriacum is involved is similar but has broader more hairy leaves, broadest in the middle (confined to Styria and Carinthia).