Sedum microstachyum is a species of flowering plant in the family Crassulaceae. It is referred to by the common name small-spiked stonecrop. It is an erect, succulent, monocarpic herb, with an unbranched stem up to 40 cm high. Leaves succulent, simple, entire, glandular, hairy, reddish in sunny positions, sessile, the basal crowded in rosettes, spathulate-linear 3-7 x 0.5-1.5 cm, the higher smaller, spirally arranged. Flowers actinomorphic, small, reddish or greenish, in a cylindrical panicle, flowering from June to September. Fruit a many-seeded follicle.

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