Information on Hoary Rock-rose

Common Name: Hoary Rock-rose
Scientific Name: Helianthemum oelandicum ssp. piloselloides
Irish Name: Grianrós liath
Family Group: Cistaceae
Distribution: View Map (Courtesy of the BSBI)
Flowering Period


Click for list of all flowering by month
Hoary Rock-rose is not easily confused with other wild plants on this web site.


Under the 1999 Flora (Protection) Order, this plant is protected in the Republic of Ireland which means that the picking, uprooting, sale or possession is prohibited, except under licence.  Helianthemum means sunflower and this small, creeping undershrub carries its racemes of small (10-15mm) golden-yellow crinkly-petalled flowers like small bursts of sunshine from April to July. At the centre of each flower is a crowded cluster of golden stamens.  The dark green, opposite leaves are silvery beneath.  A native plant, only occurring in Co Clare, this plant is found growing on limestone rocks.  It belongs to the family Cistaceae.  

I first identified this beautiful little plant in The Burren in June, 2004 and photographed it in the same spot on that date.  

If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre

Rock-rose, Hoary
Rock-rose, Hoary

This subspecies is classed as NEAR THREATENED in the Red Data List of Vascular Plants 2016. It is a subspecies for which Ireland holds or possibly holds more than 25% of the European population (Ireland Red List No. 10 Vascular Plants)