Asperula odorata). Mat to colony-forming, spreading by slender rhizomes eventually to 90cm across. Annual stems erect, 15cm or more high. Leaves in well spaced whorls of six, lanceolate to elliptic, cuspidate, 2-4cm long, dark green. Flowers white, 4-6mm across, fragrant, in terminal umbellate clusters. Most of Europe, north Africa and Siberia, in damp woods on calcareous and base-rich soils. Too invasive for the rock garden.