 Some of the less common chalk grassland herbs include clustered bellflower, early purple orchid, horseshoe vetch, kidney vetch and chalk milkwort.The north-facing slope, by contrast, has more mosses and bryophytes on the closely grazed turf, with tufted hair-grass, false oat-grass, red fescue and crested hair-grass.Common valerian is an unusual species to find on chalk soils, and other herbs include autumn gentian, fairy flax and an abundance of devil’s-bit scabious.