21. ASPERULA ODORATA Sweet Woodruff.
British native, with leaves smelling of new-mown hay when dried. Traditionally used to scent linen and strewn on floors to disguise house odours. A herbal tea used for melancholy. Useful ground cover for shade H9" Sun/shade

22. ASTER TRADESCANTII Michaelmas Daisy
Introduced from America by John Tradescant in 1633, this much-branched Aster is covered with masses of small white daisy flowers. H4ft. Sun

23. ASTRANTIA MAJOR is a woodland plant from Switzerland. (Called Black Masterwort by Gerard, also known as Pincushion Flower, Hattie's Pincushion, Melancholy Gentleman, Greater masterwort).
Naturalised all over Europe and grown in Britain since 1596. Astrantia Minor is rarer both in gardens and in its native Alps; it was introduced in 1686. Astrantia is a corrupted word from Ostrutium, which is a corruption of Struthio, an Ostrich. H2ft Sun or shade

24. BAPTISIA AUSTRALIS Blue False Indigo
An attractive plant with blue (or white) pea like flowers, followed by black pods. Can be cut down in autumn/winter and will remerge again in spring H2.5ft Sun

25. BERGENIA CRASSIFOLIA Elephant's Ears
Pink flowers in late spring/early summer. Often with attractive red foliage in the winter months. H1ft Sun/shade

26. BRUNNERA MACROPHYLLA Siberian Bugloss
Introduced in 1713. Small clear blue flowers in spring. H2ft Sun/shade

27. BUDDLEIA GLOBOSA Orange Ball Tree
Introduced from Chile in 1774. Orange flowers in May. H10ft Sun

28. BUPHTHALMUM SPECIOSUM Telekia
Introduced from the Adriatic 1739. Large shaggy yellow flowers followed by attractive seed heads and with massive heart-shaped leaves. H5ft Sun

29. CALAMINTHA NEPETOIDES Catmint
Rare native for dry sunny places. Blue scented flowers in late summer with fragrant minty foliage. H1ft Sun

30. CALTHA PALUSTRIS KingCup, Marsh Marigold, Water Blobs
Growing in Britain before the Ice Age, this native plant of streams and ponds has large buttercup flowers in spring. H1ft. Sun/shade.

31. CAMPANULA GLOMERATA BlueClustered Bellflower
A native plant. June/July H1ft Sun/shade

32. CAMPANULA PERSICIFOLIA Peach Leaved Bellflower Willow Bellflower.
In blue and white form. Introduced from Southern Europe in 1596. The roots and leaves were distilled to produce a water for sore throats.

33. CAMPANULA PYRAMIDALIS Chimney Bellflower.
Introduced before 1596 from Austria and Italy. Flower spikes of mid-blue up, or white, to 6ft. Traditionally grown in pots but also a good border plant. Sun Grown by Gilbert White and mentioned by him in his 'Flora Selborniensis' on 13th August 1766.

34. CARDAMINE PRATENSIS Lady's Smock
A native meadow flower. Pale pink flowers in spring. H1ft Sun/shade

35. CARLINA ACAULIS Alpine Carline Thistle
Grown since 1640. Spikey grey-green foliage and large flowers in June H1ft Sun

36. CATANCHE CAERULEA Cupid's Dart Blue Cupidone
Introduced from S. Europe in 1596. White and Blue forms H1.5ft Sun

37. CENTAURA MONTANA Perennial Cornflower
Originally from Austria, but grown here for several centuries. Large scented flowers of deep blue above mats of grey-green foliage June/July Repeat flowers if cut back. Spreads. H1.5 ft Sun

38. CENTRANTHUS RUBER False Valerian
Brought by the Romans from S. Italy. Its rosy pink or white flowers are attractive to butterflies throughout the summer. An ideal plant for walls, stony banks and places with dry soils. Anglo-Saxons called it Setewall. H2.5ft Sun.

39. CHELIDONIUM MAIUS Greater Celandine
A native plant often regarded as a weed, with hairy green leaves and yellow flowers in spring. The yellow caustic jioce from its stems was once used to clear misty eyes and remove warts. H1.5ft Sun/shade

40A. CHELONE OBLIQUA White Turtle's Head
From Tennessee in 1752. So called because the bright white flowers are supposedly the same shape as a turtle's head. An easy plant for the border. August/September H2ft Sun

40B. CHELONE OBLIQUA Pink Turtle's Head
From Tennessee in 1752. So called because the bright pink flowers are supposedly the same shape as a turtle's head. An easy plant for the border. August/September H2ft Sun