File:Helianthemum nummularium.jpg
Helianthemum_nummularium.jpg (640 × 480 pixels, file size: 147 KB, MIME type: image/jpeg)
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[edit]DescriptionHelianthemum nummularium.jpg |
Helianthemum nummularium (Common Rockrose) is a species of rockrose(Cistaceae), native to most of Europe. 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. Natural rockroses are yellow, 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. It flowers from May until July. |
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Author | Leonora Enking from West Sussex, England |
Camera location | 50° 49′ 35.57″ N, 0° 26′ 34.89″ W ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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This image, originally posted to Flickr, was reviewed on December 29, 2011 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 10:13, 29 December 2011 | ![]() | 640 × 480 (147 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{Information |Description=Helianthemum nummularium (Common Rockrose) is a species of rockrose(Cistaceae), native to most of Europe. It is an evergreen trailing plant with loose terminal clusters of bright yellow, saucer-shaped flowers. In the flower cen |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot SX200 IS |
Exposure time | 1/320 sec (0.003125) |
F-number | f/3.4 |
ISO speed rating | 400 |
Date and time of data generation | 11:07, 12 May 2011 |
Lens focal length | 5 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
File change date and time | 11:07, 12 May 2011 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 11:07, 12 May 2011 |
Meaning of each component |
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APEX shutter speed | 8.3125 |
APEX aperture | 3.53125 |
APEX exposure bias | 0 |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,393.442622951 |
Focal plane Y resolution | 16,393.442622951 |
Focal plane resolution unit | inches |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |