dryopteris carthusiana

It is a diploid species, and is the parent of several species of hybrid origin, including Dryopteris carthusiana.

Herbaceous plants include wood sorrel, bunchberry, yellow clintonia, and spinulose woodfern (Dryopteris carthusiana).

Locally scarce plants include Narrow Buckler Fern (Dryopteris carthusiana) and Wild Daffodil (Narcissus pseudonarcissus ssp.

They include Royal Fern, Osmunda regalis, and Narrow Buckler Fern, Dryopteris carthusiana, Hemlock Water Dropwort, Oenanthe crocata, and Smooth-stalked Sedge, Carex laevigata, all of which are rare or have a localised distribution in North-east England.