LATIN NAMESempervivum juvanii
AUTHORStrgar
SLOVENIAN NAMEJuvanov netresk
ENGLISH NAME
GENUSSempervivum
FAMILY (LATIN)Crassulaceae
FAMILY (SLOVENIAN)tolstičevke
ORDER
CLASS
PHYLUM
KINGDOM
FLOWERING TIMEjuly - august
PREVALENCEslovenski endemit (Donačka gora, Resenik)
RED LIST
CITES
PLANTS GROW IN LABELED (label) GARDEN WORK
map
PLANTS PICTURE
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
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