x brevierei
Synonym : Sedum xbrevierei Chassagne (1956)
Distribution : Central and west France.
Parentage : Petrosedum forsterianum x P. rupestre ssp. rupestre
Description (according to IHSP, 2003) :
Intermediate between the parents.
Leaves semiterete, not conspicuously tufted.
Inflorescences drooping in bud, glabrous, bracts rudimentary, only subtending the flowers in the centre of the inflorescence.
Flowers : Sepals ± 2.5 mm, petals yellow, ± 6.5 mm, spreading, filaments yellow, glabrous.
Cytology : 2n = 104