Sempervivum marmoreum

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Sempervivum marmoreum
Sempervivum marmoreum01.JPG

Sempervivum marmoreum

Systematics
Family : Thick-leaf family (Crassulaceae)
Subfamily : Sempervivoideae
Tribe : Semperviveae
Genre : Hauswurzen ( Sempervivum )
Section : Sempervivum sect. Sempervivum
Type : Sempervivum marmoreum
Scientific name
Sempervivum marmoreum
Griseb.

Sempervivum marmoreum is a species of houseleek ( Sempervivum ) in the thick-leaf family(Crassulaceae).

description

Vegetative characteristics

Sempervivum marmoreum grows as a rosette plant with a diameter of 3 to 10 centimeters and forms horizontal, finely downy-haired runners . The obovate to obovate-spatulate or broadly lanceolate, almost stalk-round leaves have a pointed tip or are briefly pointed. Young leaves on offshoots are very downy hairy.

Generative characteristics

The downy-haired flowering shoot bears obovate or elongated to lanceolate, slightly pointed, upright leaves. The upright inflorescence usually consists of three forked coils. The lanceolate, pointed to pointed, reddish green, 5 to 6.5 millimeter long sepals are fused together over a length of up to 2.5 millimeters. The linear-lanceolate, pointed petals are red with whitish stripes near the edge. The stamens are bare. The stylus is about 2 millimeters long. The almost square to semicircular nectar flakes are greenish.

genetics

The number of chromosomes is .

Systematics and distribution

Sempervivum marmoreum is common in the Balkans .

The first description by August Grisebach was published in 1843.

The following subspecies are distinguished:

  • Sempervivum marmoreum subsp. marmoreum
  • Sempervivum marmoreum subsp. ballsii (whales) Zonn. ; named after the English plant collector Edward K. Balls (1892–1984)
  • Sempervivum marmoreum subsp. erythraeum (Velen.) Zonn.
  • Sempervivum marmoreum subsp. matricum (Letz) Hadrava & Miklánek
  • Sempervivum marmoreum subsp. reginae-amaliae (Heldr. & Sartori ex Boiss.) Zonn. ; named after Amalie von Oldenburg (1818–1875), queen in Greece and wife of King Otto I of Greece .

proof

literature

  • Henk 't Hart, Bert Bleij, Ben Zonneveld: Sempervivum marmoreum . In: Urs Eggli (Hrsg.): Succulent lexicon. Crassulaceae (thick leaf family) . Eugen Ulmer, Stuttgart 2003, ISBN 3-8001-3998-7 , pp. 358-360 .

Individual evidence

  1. ↑ Spicilegium Florae Rumelicae et Bithynicae Exhibens Synopsin Plantarum quas in aest. 1839 . Volume 1, 1843, pp. 329-330 ( online ).
  2. ↑ Urs Eggli , Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer-Verlag Berlin, Heidelberg, New York. Page 21, 2004. ISBN 3-540-00489-0
  3. ^ Dominik Roman Letz: A new species of the Sempervivum marmoreum group in Central Europe . In: Preslia . Volume 81, Number 3, 2009, pp. 293-308 ( PDF ).
  4. ↑ Martin Miklánek: Sempervivum marmoreum ssp. matricum (Letz) Hadrava et Miklánek comb. Nova . In: Kaktusy . Volume 46, Number 2, 2010, pp. 24-26.
  5. ↑ Urs Eggli , Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer-Verlag Berlin, Heidelberg, New York. Page 21, 2004. ISBN 3-540-00489-0

Web links

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