NOM LATINSempervivum juvanii
D'AUTEURStrgar
NOM SLOVENIANJuvanov netresk
NOM ANGLAIS
GENRESempervivum
FAMILLE (LATINE)Crassulaceae
FAMILLE (SLOVENIAN)tolstičevke
ORDRE
CLASSE
PHYLUM
RÈGNE
TEMPS DE FLORAISONjuillet - août
PRÉVALENCEslovenski endemit (Donačka gora, Resenik)
LISTE ROUGE
CITES
PLANTES POUSSENT DANS (label) JARDIN PARTIE
map
PLANTES IMAGE
Sempervivum juvanii
Sempervivum juvanii

In Slovenia, there are only two species of houseleek: common houseleek (Sempervivum tectorum) and Juvan's houseleek (S. juvanii), the latter found on Mount Donačka gora and Mount Resenik in the eastern part of the country. The habitat of Juvan's houseleek has been known since the first half of the 19th century, but it was given its present name and recognized as a species only in 1971, when it was described by Vinko Strgar PhD (1928-1992), the then director of the Ljubljana Botanic Garden. Before 1971, the houseleek found on Donačka gora and Resenik was considered to be Wulfen's houseleek (S. wulfenii), which grows in the Swiss, Italian and Austrian Alps. Only a more detailed and thorough examination revealed that the houseleek growing outside the Alpine area, in Slovenia's sub-Pannonian region, differs from the houseleek found in the Alps. Both Wulfen's and Juvan's houseleeks are yellow-flowered, but Juvan's houseleek's rosette leaves are hairy or even minutely glandular-hairy, while the leaves of Wulfen's houseleek are hairless. Juvan's houseleek was named after Franc Juvan (1875-1960), a gardener at the Ljubljana Botanic Garden from 1896 to 1960 and a great plant expert. Juvan began his career at the Garden at the time when its director was Alfonz Paulin. He became Paulin's assistant, a plant collector and a knowledgeable plant expert.
Text: J. Bavcon
REGARDEZ AUSSI:
Kalanchoe daigremontiana
Aeonium floribundum
Jovibarba heuffelii
Helleborus multifidus
Baptisia australis
 

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