Cistus x skanbergii Lojac., (syn: Cistus × skanbergii f. albiflorus Demoly);
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Sicilia (S. Lampedusa), Cyprus as per POWO;
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Cistus x skanbergii from California-GS08052022-3: 4 very high res. images.
Cistus x skanbergii photographed from Reagan Nursery, Fremont, California, 14-4-2019
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References:
POWO Catalogue of Life The Plant List Ver.1.1 IPNI
https://en.wikipedia.org/wiki/Cistus_%C3%97_skanbergii
https://www.smgrowers.com/products/plants/plantdisplay.asp?plant_id=409
https://www.rhs.org.uk/plants/93118/cistus-x-skanbergii/details
https://www.bethchatto.co.uk/conditions/plants-for-dry-conditions/cistus-x-skanbergii.htm