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''Helianthemum nummularium'' (known as common rock-rose) is a species of rock-rose (
Image:Helianthemum alpestre0.jpg,
Image:Sonnenröschen.jpg
Image:Sonnenröschen02.jpg
Image:Helianthemum grandiflorum a1.jpg
Image:Helianthemum grandiflorum a2.jpg
Image:Helianthemum_nummularium1.jpg
Image:Solvända.jpg
Image:Helianthemum_nummularium_subsp_obscurum_260807.jpg, ''H. nummularium'' subsp. ''obscurum''
Germany - Schwäbisch Fränkische Waldberge Image:Helianthemum_nummularium_subsp_obscurum_260807a.jpg, ''H. nummularium'' subsp. ''obscurum''
Germany - Schwäbisch Fränkische Waldberge Image:Helianthemum_nummularium_subsp_obscurum_300907.jpg, ''H. nummularium'' subsp. ''obscurum''
Germany - Schwäbische Alb Image:Helianthemum nummularium subsp obscurum 220608.jpg, ''H. nummularium'' subsp. ''obscurum''
Germany - Schwäbische Alb Image:Helianthemum nummularifolium1.jpg Image:Helianthemum nummularifolium0.jpg
Image:Prolecne-perene-2.jpg
Image:Perene-roze.jpg
Image:Helianthemum vulgare Sturm51.jpg
Image:Helianthemum vulgare flowerdiagram.png, flower diagram
Image:Helianthemum nummularium2.jpg
Image:Helianthemum nummularium2.JPG
Image:Helianthemum nummularium - leafs (aka).jpg
Flora Europaea: ''Helianthemum nummularium''
{{Taxonbar, from=Q164232 numularium Flora of Lebanon Flora of Western Asia Taxa named by Philip Miller
''Helianthemum nummularium'' (known as common rock-rose) is a species of rock-rose (Cistaceae
The Cistaceae are a small family of plants (rock-rose or rock rose family) known for their beautiful shrubs, which are profusely covered by flowers at the time of blossom. This family consists of about 170(-200) species in nine genera that are ...
), native to most of Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...
.
Description
It is an evergreen trailing plant with loose terminal clusters of bright yellow, saucer-shaped flowers. In the flower centre is a tight cluster of orange stamens, which are sensitive to the touch, and spread outwards to reveal the tall stigma in the middle. The plant is common on chalk downs, and occasional in other grasslands, always on dry, base-rich soil. The wild species has yellow flowers, but garden varieties range from white through yellow to deep red. Though the individual blooms are short-lived, the plant produces a mass of flowers through the summer. It needs a dry, sunny place, like a south-facing rockery or meadow. As the Latin name ''Helianthemum'' suggests, these are sun-flowers. This is a good nectar source for bees and there are several species of small beetle that feed on the foliage. Common rock-rose is also the food plant for the larvae of several species of moth and butterfly such as the silver-studded blue (''Plebejus argus).'' It flowers from May until July.Taxonomy
Subspecies
Two subspecies are currently accepted: *''Helianthemum nummularium'' subsp. ''kerneri'' (Gottl.-Tann. & Janch.) Lambinon *''Helianthemum nummularium'' subsp. ''nummularium''. Widespread.Gallery
subsp. ''grandiflorum'' (Scop.) Schinz & Thell.
subsp. ''nummularium''
subsp. ''obscurum'' (Čelak.) Holub)
Germany - Schwäbisch Fränkische Waldberge Image:Helianthemum_nummularium_subsp_obscurum_260807a.jpg, ''H. nummularium'' subsp. ''obscurum''
Germany - Schwäbisch Fränkische Waldberge Image:Helianthemum_nummularium_subsp_obscurum_300907.jpg, ''H. nummularium'' subsp. ''obscurum''
Germany - Schwäbische Alb Image:Helianthemum nummularium subsp obscurum 220608.jpg, ''H. nummularium'' subsp. ''obscurum''
Germany - Schwäbische Alb Image:Helianthemum nummularifolium1.jpg Image:Helianthemum nummularifolium0.jpg
Pink-flowered cultivars
Illustrations
Unclassified images of ''Helianthemum nummularium''
References
Flora Europaea: ''Helianthemum nummularium''
{{Taxonbar, from=Q164232 numularium Flora of Lebanon Flora of Western Asia Taxa named by Philip Miller