MATRICUM   Letz, 2009

Synonyms :

Sempervivum schlehanii var. dimorphum  Domokos (1936)

Sempervivum schlehanii var. tokajense  Domokos (1936)

Sempervivum marmoreum var. angustissimum  Priszter (1980)

Sempervivum marmoreum fa longirameum  Priszter (1985)

Section Sempervivum

Distribution : Occuring in the west from the Hungarian Medium Mountains north-eastwards along the Slovak-Hungarian border, growing on rocky, exposed south-facing habitats on various volcanic as well as calcareous substrates, 150 - 1100 m.

Description :

Rosettes (3-) 5 - 10 (-13) cm in diameter.

Leaves (15-) 25 - 80 x 5 - 15 (-20) mm, obovate-spatulate to oblong, mostly broader above, abruptly mucronate, upper side flat to concave, underside convex, green, often with red-purple tip or flushed red over the upper part, to the naked eye not conspicuously pubescent, never glabrous, hairs 0.10 - 0.25 mm long and relatively sparse and bearing a small terminal gland, margins ciliate.

Cauline leaves oblong lanceolate, acuminate, 2 - 5 cm long and 3.5 - 15 mm broad, at least partly floushed red, glandular hairy, margins ciliate.

Inflorescences up to 35 cm high, (12-) 30 - 60 (-65) flowered, branched.

Flowers 12-merous, 1.5 - 2.5 cm in diameter, sepals linear-lanceolate, petals 8 - 12 x 1 - 2 mm, linear to linear-lanceolate, with glandular hairs on underside and margins, whitish to pale pink, with a broad darker median band of purple lines, stamens purple-violet, anthers purple to violet with yellow pollen.

Flowering time : August.

Cytology : 2n = 68

Published in Preslia 81: 293-308, 2009