Sedum eriocarpum, the purple stonecrop, is a small, annual, succulent herb, 3–6 cm high, with hairless, reddish-green stems. Leaves succulent, simple, entire, spirally arranged, hairless, stalkless, elliptical to oblong, 3–15 x 2–8 mm, green or green-reddish. Flowers actinomorphic, petals white with purplish keel. It flowers from March to May and the fruit is a follicle.

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