Sedum
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RUBENS   L. 1753

Synonyms :

Crassula rubens  (L.) L. (1759) / Aithales rubens  (L.) Webb & Berthelot (1840)

Sedum boissierianum  Haussknecht in sched.(s.a.)

Sedum pallens  Haworth (1821)

Sedum rubens  DC (1828)

Sedum matrense  Kitaibel (1863) / Sedum hispanicum fa matrense  (Kitaibel) Jávorka (1924)

Procrassula mediterranea  Jordan & Fourreau (1866) / Sedum rubens var. mediterraneum (Jordan & Fourreau) Rouy & Camus (1901)

Procrassula pallidiflora  Jordan & Fourreau (1866) / Sedum rubens var. pallidiflorum (Jordan & Fourreau) Rouy & Camus (1901)

Sedum simplex  Steudel ex Boissier (1872)

Sedum steudelii  Boissier (1872)

Sedum ibicense  Pau (1900)

Sedum rubens var. praegeri  Fröderström (1932)

Sedum rubens var. haouzense  Andréanszky (1938)

 

Distribution : Near East, southern, central and western Europe, Northern Africa, Canary Islands (probably introduced).

 

 

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

 

Erect annual herbs, 2 - 15 cm, glandular-pubescent especially in the upper parts, usually  glaucous, reddish.

 

Leaves 10 - 20 mm, in whorls of 4, alternate in the upper parts, linear to elliptic, semiterete.

 

Inflorescences pubescent bracteate cymes with  2 - 3 or more cincinniform branches.

 

Flower 5-merous, sessile, with 5 stamens (rarely 5 - 10), sepals broadly sessile, basally connate, ± 1 mm, triangular, petals ± 5 mm, usually keeled and sharply acuminate, white, rarely pinkish, usually erect during anthesis, filaments as long as the carpels, anthers small, globose, red or yellowish.

 

Cytology : 2n = 40, 40, 40 - 42, 60, 76, 80, 94, 100, ± 110

 

Ray Stephenson writes (Sedum, Cultivated Stonecrops, 1994, p. 112) : "Sedum rubens, which is closely related to S. hispanicum, is strictly 5-partite ...[and] is always annual."

 

 

See also : Sedum eriocarpum, S. hispanicum, S. pallidum, S. pentapetalum

 

 

Plantes en culture - collectage : Eric Barbier, Bassurels (Lozère - France) alt. 700 m



Jeunes semis (feuilles verticillées par 4).
Young seedlings (leaves in whorls of 4).


Plante en fleur (feuilles du bas verticillées, en haut alternes, fleurs pentamères).
Flowering plant ( leaves below in rows of 4, above alternate, flowers 5-merous).
Photos Eric Barbier



Photo Lourdes Izquierdo










Photos à Saint-Jean-Cap-Ferrat. La plante pousse dans un sol calcaire situé à 110 m d'altitude. 

In a shady spot :



Photos Thomas Delange


La Gomera :



Photo Stefan Neuwirth


Sedum steudelii, now synonymous with S. rubens :






When I realised that in Crassulaceae Eggli et al., this species had been submersed into S. rubens, I was more than a little surprised. Plants tend to be huge by comparison and simple. I have found the two species growing within 30km of each other and had no difficulty separating them.

60mm lens cap. Photographs taken at foot of Mt Ararat c3500m, N facing.

S. rubens, Lake Ichkeul, Tunisia :






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