MARMOREUM ssp. MARMOREUM

Synonyms :

Sempervivum marmoreum var. marmoreum.

* Sempervivum assimile  Schott (1853) / Sempervivum blandum var. assimile  (Schott) Stojanov & Stefanoff (1924) / Sempervivum montanum var. assimile  (Schott) Stojanov & Stefanoff (1924)*

Sempervivum blandum  Schott (1853) / Sempervivum assimile ssp. blandum  (Schott) Simonkai (s.a.) / Sempervivum schlehanii ssp. blandum  (Schott) Ravarut (s.a.) / Sempervivum schlehanii var. blandum  (Schott) Hayek (1924) / Sempervivum marmoreum ssp. blandum  (Schott) Soó (1963) 

Sempervivum schlehanii  Schott (1853)

Sempervivum rubicundum  Schur (1858) / Sempervivum marmoreum fa rubicundum  (Schur) Soó (1963) 

Sempervivum assimile var. glabrescens  Borbàs (1874)

Sempervivum schlehanii var. dinaricum  Becker (1923)

Sempervivum ornatum  Selwyn Duruz (1930)

Sempervivum schlehanii fa brunneifolium  Praeger (1932) / Sempervivum brunneifolium  (Praeger) Domokos (1936) / Sempervivum marmoreum fa brunneifolium  (Praeger) Soó (1963)

Sempervivum banaticum  Domokos (1936)

Sempervivum balcanicum  Stojanov (1951)

Sempervivum marmoreum var. dinaricum  Soó (1966)

Sempervivum marmoreum fa pallidiflorum  Soó (1973)

*According to R. Letz (2009) the name Sempervivum assimile belongs into the synonymy of S. tectorum.

Distribution : Balkans.

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

Rosette open, flattish, 5 - 10 cm in diameter, stolons usually short.

Leaves glabrous but pubescent when young, densely ciliate, green, red-tipped or flushed with red or brown, 2 - 5 cm.

Flowering branches 10 - 20 cm, with slightly pubescent leaves.

Inflorescence to 7 cm in diameter.

FIowers 11- to 13-merous, to ± 2.5 cm in diameter, petals reddish-purple with a white margin giving a paler appearance, ± 10 mm.

The typical ssp. comprises plants with very acuminate glabrous leaves and petals with a distinctly white margin. S. brunneifolium collected by Degen from Trikule near Svinitza in South Hungary was first described as S. schlehanii fa brunneifolium by Praeger (1932). It differs from typical S. schlehanii by its uniformly brown-coloured leaves, totally glabrous when mature, and turning red in winter. Praeger included S. omatum in the synonymy of S. schlehanii fa brunneifolium. Mitchell (1973: 17) treated the latter as S. marmoreum fa brunneifolium. According to Praeger (1932: 59) Correvon used the name S. omatum for a different plant. Most likely, however, S. ornatum is a hybrid between S. marmoreum fa rubrifolium and S. tectorum (Zonneveld, pers. comm.). Praeger (1932:59) further mentioned S. schlehanii var. dinaricum Becker. Distinguishing characters are the very acuminate leaves and the smaller, very narrow petals. Mitchell (1973: 17) gives this taxon as S. marmoreum var. dinaricum Becker.

Reports of S. marmoreum from central Italy are based on misidentified specimens of S. tectorum var. arvernense.