This section is from the book "British Wild Flowers In The Four Seasons", by Thomas Moore. Also available from Amazon: British Wild Flowers.
S. coerulea: dwarf, densely tufted; stem 6-12 inches high, supporting a solitary ovate-oblong spike-like panicle, 1/2-3/4 inch long, of a bluish-grey. - Alpine limestone rocks. Fl. April to June.
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