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Alpine Rock-cress |
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Arabis alpina |
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Photo © John Birks |
Found among wet rocks in two localities in the Cuillins. Not known from anywhere else in the British Isles. Flower diameter c 7-10 mm. Pod c 20-40 mm on stalk c 8-15 mm. Skye ID: Flowers as shown, with 4 white unnotched petals. All leaves undivided but toothed and hairy, the basal leaves narrowing into a short stalk, the stem leaves clasping the stem with a pair of rounded lobes (see picture below right). Pods narrow and straight, not held close up against the stem like those of Hairy Rock-cress. Spreads by above-ground creeping stems, which Hairy Rock-cress does not. Other features: The stem and leaves have star-like hairs, radiating in clusters from a single base point, as do many other Crucifer species. The sepals are rather bulging and are about half the length of the petals. |
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Photo © John Birks |
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Photo © John Birks |
The right-hand picture shows the toothed basal rosette leaves and the similar toothed clasping stem leaves (on the purplish stems). The smaller oval untoothed leaves in the picture do not belong to this species.
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Photo © John Birks |