PURPLE |
| Arrow-grass (Marsh) |
| Arrow-head |
| Balsam (Himalayan) |
| Bartsia (Red) |
| Basil (Wild) |
| Bean (Broad) |
| Bears' Breech (Spiny) |
| Betony |
| Bittersweet |
| Broomrape (Common) |
| Broomrape (Thyme) |
| Bugloss (Viper's) |
| Butterfly Bush |
| Butterwort (Great) |
| Campion (Rose) |
| Cranesbill (Bloody) |
| Cranesbill (Hedgerow) |
| Crocus (Autumn) |
| Dame's Violet |
| Foxglove |
| Foxglove (Fairy) |
| Foxglove Tree |
| Fritillary |
| Hair-Grass (Wavy) |
| Hemp Agrimony |
| Hemp-Nettle (Bifid) |
| Hemp-Nettle (Large-Flowered) |
| Henbane |
| Honesty |
| Horehound (Black) |
| House-Leek |
| Kale (Sea) |
| Knapweed (Common) |
| Knapweed (Greater) |
| Knapweed (Hybrid) |
| Knapweed (Lesser) |
| Lamb's-Ear |
| Leek (Sand) |
| Lenten-Rose |
| Loosestrife (Purple) |
| Lords And Ladies |
| Lousewort |
| Lucerne |
| Mallow (Musk) |
| Marjoram (Wild) |
| Orchid (Early Marsh) |
| Orchid (Early Purple) |
| Orchid (Lady) |
| Orchid (Lizard) |
| Orchid (Northern Marsh) |
| Oysterplant |
| Pasque Flower |
| Pimpernel (Scarlet) |
| Poppy (Opium) |
| Potato |
| Quinoa |
| Ragged Robin |
| Rhododendron |
| Salsify |
| Saxifrage (Purple) |
| Sea-Lavender (Wavyleaf) |
| Seablite (Annual) |
| Self-Heal |
| Skullcap |
| Snapdragon |
| Sowbread |
| Star of Persia |
| Steeplebush |
| Stonecrop (Caucasian) |
| Teaplant (Duke of Argylle's) |
| Thistle (Carline) |
| Thistle (Marsh) |
| Thistle (Melancholy) |
| Thistle (Milk) |
| Thistle (Musk) |
| Thistle (Spear) |
| Thistle (Welted) |
| Thistle (Woolly) |
| Thyme (Wild) |
| Toadflax (Annual) |
| Toadflax (Purple) |
| Toothwort (Purple) |
| Vervain (Argentinian) |
| Vetch (Kidney) |
| Willowherb (American) |
| Willowherb (BroadLeaved) |
| Willowherb (Great) |
| Willowherb (Rosebay) |
| Woundwort (Marsh) |
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