| Anemone (Poppy) |
| Anemone (Wood) |
| Arabis (Garden) |
| Archangel (Yellow) |
| Arrow-grass (Marsh) |
| Arrow-grass (Sea) |
| Avens (Water) |
| Avens (Wood) |
| Balsam (Small) |
| Barberry |
| Barberry (Mrs Wilson's) |
| Bearberry |
| Bearberry (Arctic) |
| Bilberry |
| Bittercress (Hairy) |
| Bittercress (Large) |
| Bittercress (Wavy) |
| Blackthorn |
| Bleeding Heart |
| Blinks |
| Bog Myrtle |
| Bogbean |
| Bolete (Summer) |
| Borage |
| Bracken |
| Brooklime |
| Broom |
| Bryony (Black) |
| Bryony (White) |
| Buck's-Beard |
| Buckthorn (Sea) |
| Bugle |
| Bugle (Pyramidal) |
| Bugloss |
| Burnet (Fodder) |
| Burnet (Salad) |
| Butterbur |
| Butterbur (White) |
| Buttercup (Celery-Leaved) |
| Buttercup (Goldilocks) |
| Butterwort (Common) |
| Butterwort (Great) |
| Cabbage (Wild) |
| Campion (Bladder) |
| Campion (Red) |
| Campion (Rose) |
| Campion (Sea) |
| Campion (White) |
| Candytuft (Perennial) |
| Cat's-ear |
| Chanterelle |
| Cherry (Bird) |
| Cherry (Wild) |
| Chicken of the Woods |
| Cinquefoil (Marsh) |
| Columbine |
| Cornflower |
| Cornsalad (Keel-Fruited) |
| Corydalis (Climbing) |
| Corydalis (Yellow) |
| Cotoneaster (Entire-Leaved) |
| Cowberry |
| Cowslip |
| Cow-wheat (Common) |
| Cranesbill (Bloody) |
| Cranesbill (Cut-Leaved) |
| Cranesbill (Dovesfoot) |
| Cranesbill (French) |
| Cranesbill (Hedgerow) |
| Cranesbill (Munich) |
| Cranesbill (Pencilled) |
| Cranesbill (Shining) |
| Cranesbill (Small-Flowered) |
| Cress (Hoary) |
| Cress (Thale) |
| Crosswort |
| Crowberry |
| Cuckoo Flower |
| Daisy |
| Daisy (Seaside) |
| Dame's Violet |
| Dandelion |
| Dead-Nettle (Henbit) |
| Dead-Nettle (Red) |
| Dead-Nettle (White) |
| Dewberry |
| Dragon's Teeth |
| Dropwort |
| Fern (Lady) |
| Fern (Maidenhair) |
| Fern (Male) |
| Fern (Parsley) |
| Fiddleneck (Common) |
| Fir (Flaky) |
| Flax (Fairy) |
| Flax (Perennial) |
| Fleabane (Mexican) |
| Forgetmenot (Early) |
| Foxglove (Fairy) |
| Foxglove Tree |
| Fringe Cups |
| Fritillary |
| Fumitory (Common Ramping) |
| Garlic (Three-Cornered) |
| Garlic Mustard |
| Gentian (Spring) |
| Goatsbeard |
| Greater Celandine |
| Ground Ivy |
| Guelder-rose |
| Gum (Jounama Snow) |
| Hair-Grass (Wavy) |
| Hawksbeard (Beaked) |
| Heath (Prickly) |
| Hen of the Woods |
| Herb Robert |
| Hogweed |
| Holly |
| Holly (Highclere) |
| Honesty |
| Horse-Chestnut |
| Horse-Chestnut (Red) |
| Horsetail (Great) |
| Houndstongue |
| Hybrid Geum |
| Inkcap (Shaggy) |
| Iris (Siberian) |
| Kale (Sea) |
| Lady's Mantle (Alpine) |
| Lamb's-Ear |
| Laurel (Portugal) |
| Laurel (Spotted) |
| Leek (Sand) |
| Lesser Celandine |
| Lily of the Valley |
| Liverwort (Scented) |
| Lords And Ladies |
| Lords And Ladies (Italian) |
| Lousewort |
| Lupin (Tree) |
| Madder (Field) |
| Marigold (Marsh) |
| Meadow-Foam |
| Medick (Black) |
| Mercury (Annual) |
| Mignonette (Wild) |
| Milkwort (Sea) |
| Mind Your Own Business |
| Mock Orange |
| Monkshood |
| Moschatel |
| Mulberry (Black) - TREE |
| Navelwort |
| Nettle (Small) |
| Nettle (Stinging) |
| Orchid (Bird's-Nest) |
| Orchid (Calypso) |
| Orchid (Common Spotted) |
| Orchid (Dense-Flowered) |
| Orchid (Early Marsh) |
| Orchid (Early Purple) |
| Orchid (Fly) |
| Orchid (Greater Butterfly) |
| Orchid (Green-Winged) |
| Orchid (Heath Spotted) |
| Orchid (Lady's Slipper) |
| Orchid (Lady) |
| Orchid (Northern Marsh) |
| Orchid (Southern Marsh) |
| Pansy (Field) |
| Parsley Piert (Slender) |
| Pasque Flower |
| Pellia (Nees') |
| Periwinkle (Lesser) |
| Phacelia (Tansy-Leaved) |
| Pheasant's Eye |
| Pimpernel (Bog) |
| Pimpernel (Scarlet) |
| Pimpernel (Yellow) |
| Pine (Bhutan) |
| Pine (Lodgepole) |
| Pineapple Weed |
| Pink-Sorrel (Pale) |
| Plantain (Buck's-horn) |
| Plantain (Ribwort) |
| Polypody (Common) |
| Poppy (Atlantic) |
| Poppy (Long Headed) |
| Poppy (Welsh) |
| Primrose |
| Primrose (Birdseye) |
| Primrose (Scottish) |
| Purslane (Pink) |
| Radish (Sea) |
| Radish (Wild) |
| Ragged Robin |
| Ragwort (Oxford) |
| Ramsons |
| Raspberry |
| Rattle (Yellow) |
| Rhododendron |
| Rhubarb |
| Rockcress (Hairy) |
| Rose (Red-Leaved) |
| Rosemary (Bog) |
| Roseroot |
| Rowan (Common) |
| Rowan (Japanese) |
| Rowan (Joseph Rock's) |
| Rowan (Kashmir) |
| Rowan (Khumbuensis) |
| Rowan (Vilmorins) |
| Sanicle |
| Saxifrage (Golden [Alternate Leaved]) |
| Saxifrage (Golden [Opposite Leaved]) |
| Saxifrage (Meadow) |
| Saxifrage (Mossy) |
| Saxifrage (Purple) |
| Saxifrage (Rue-Leaved) |
| Scurvygrass (Danish) |
| Scurvygrass (English) |
| Sea-spurrey (Lesser) |
| Sedge (False Fox) |
| Sheepsbit |
| Shepherd's Purse |
| Silverweed |
| Snapdragon |
| Sorrel (Spreading Yellow) |
| Sorrel (Wood) |
| Sow-Thistle (Prickly) |
| Sow-Thistle (Smooth) |
| Speedwell (Ivy-Leaved) |
| Speedwell (Wall) |
| Spring Beauty |
| Spurge (Cypress) |
| Spurge (Petty) |
| Spurge (Portland) |
| Spurge (Sun) |
| Spurge (Twiggy) |
| Star of Persia |
| Stonecrop (Biting) |
| Storksbill (Common) |
| Storksbill (Sticky) |
| Strawberry (Barren) |
| Strawberry (Wild) |
| Sweet Cicely |
| Tare (Hairy) |
| Thistle (Slender) |
| Thrift |
| Thyme (Wild) |
| Thyme-Moss (Hart's-Tongue) |
| Toothwort (Purple) |
| Tormentil |
| Trefoil (Hop) |
| Turkeytail |
| Twayblade (Common) |
| Valerian (Red) |
| Vetch (Kidney) |
| Vetchling (Meadow) |
| Viburnum (Wrinkled) |
| Wall-Rue |
| Water Fern |
| Water-Plantain (Lesser) |
| Watercress (Narrow-Fruited) |
| Willowherb (New Zealand) |
| Wintergreen (Chickweed) |
| Woodruff |
| Yellow Clubs |
 |
MONTHS
MAY