Sempervivum arachnoideum L., 1753

Common names

🇬🇧 Cobweb House-leek
🇫🇷 Joubarbe toile-d’araignée, Joubarbe-araignée, Joubarbe à toiles d’araignée

Taxonomy

Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Superrosids
Order: Saxifragales
Family: Crassulaceae
Subfamily: Sempervivoideae
Tribe: Semperviveae
Genus: Sempervivum
Species: Sempervivum arachnoideum

Presence

Present.

Conservation status

Red List (Metropolitan France): LC Least Concern

Notes

The following infraspecific taxa are accepted:

S. arachnoideum subsp. arachnoideum L., 1753, P;
S. arachnoideum subsp. tomentosum (C.B.Lehm. & Schnittsp.) Schinz & Thell., 1923.

Hybridizes with:

S. calcareum Jord., 1849 to produce S. × morelianum Viv.-Morel, 1924, P;
S. montanum L., 1753 to produce S. × barbulatum Schott, 1853, P;
S. montanum L., 1753 and S. tectorum subsp. alpinum (Griseb. & Schenk) Wettst., 1922 to produce S. × funckii Braun ex W.D.J.Koch, 1832, I;
S. tectorum L., 1753 to produce S. × alatum Scheele, 1843, P (het. syn. S. × angustifolium A.Kern., 1870).

Photographs

img/sempervivum-arachnoideum.webp — Sempervivum arachnoideum

img/sempervivum-arachnoideum-2.webp — Sempervivum arachnoideum

img/sempervivum-arachnoideum-3.webp — Sempervivum arachnoideum

Sources

Tison, J.M., & de Foucault, B. (2014). Flora Gallica : Flore de France (p. 683). Biotope.