May Wild Flower Records
Hamilton, Ontario, Canada
Updated to May 31, 2005
Records of 233 species in bloom seen in May during the last 7 years in the Hamilton Area.
* = Plant is not native to our area.
| English Names | Latin Names | French Names |
| ALYSSUM, SMALL * | Alyssum alyssoides | Alysson calicinal |
| ANEMONE, RUE | Anemonella thalictroides | Anémone fauxpigamon |
| ANEMONE, WOOD | Anemone quinquefolia | Anémone à cinq folioles |
| ANISEROOT | Osmorhiza longistylis | Osmorhize à long style |
| ASPARAGUS * | Asparagus officinalis | Asperge |
| ASPEN, LARGE-TOOTHED (TREE) | Populus grandidentata | Peuplier à grandes dents |
| ASPEN, TREMBLING (TREE) | Populus tremuloides | Peuplier faux-tremble |
| AVENS, YELLOW | Geum aleppicum | Benoîte d'alep |
| BANEBERRY, RED | Actaea rubra | Actée rouge |
| BANEBERRY, WHITE | Actaea pachypoda | Actée à gros pédicelles |
| BARBERRY, COMMON * (SHRUB) | Berberis vulgaris | Épine-vinette commune |
| BARBERRY, JAPANESE * (SHRUB) | Berberis thunbergii | Épine-vinette du japon |
| BEARDTONGUE, FOXGLOVE | Penstemon digitalis | Penstémon digitale |
| BEDSTRAW, ROUGH | Galium asprellum | Gaillet piquant |
| BEECH, AMERICAN (TREE) | Fagus grandifolia | Hêtre à grandes feuilles |
| BEECH, BLUE (TREE) | Carpinus caroliniana | Charme de caroline |
| BELLWORT, LARGE-FLOWERED | Uvularia grandiflora | Uvulaire grandiflore |
| BELLWORT, PERFOLIATE | Uvularia perfoliata | Uvulaire perfoliée |
| BITTERCRESS, HAIRY * | Cardamine hirsuta | Cardamine hirsute |
| BLADDERNUT, AMERICAN (SHRUB) | Staphylea trifolia | Staphylier à trois folioles |
| BLOODROOT | Sanguinaria canadensis | Sanguinaire du Canada |
| BLUE FLAG, SLENDER * | Iris prismatica | Iris prismatique |
| BLUEBERRY, EARLY LOW | Vaccinium angustifolium | Airelle à feuilles étroites |
| BLUE-EYED GRASS, COMMON | Sisyrinchium montanum | Bermudienne montagnarde |
| BUCKTHORN, COMMON * (TREE) | Rhamnus cathartica | Nerprun cathartique |
| BUGLE * | Ajuga reptans | Bugle rampante |
| BUTTERBUR * | Petasites japonicus | Pétasite du japon |
| BUTTERCUP, CREEPING * | Ranunculus repens | Renoncule rampante |
| BUTTERCUP, EARLY | Ranunculus fascicularis | Renoncule fasciculée |
| BUTTERCUP, HISPID | Ranunculus hispidus | Renoncule hispide |
| BUTTERCUP, KIDNEYLEAF | Ranunculus abortivus | Rallonge coudée |
| BUTTERCUP, TALL * | Ranunculus acris | Renoncule âcre |
| CALLA, WILD | Calla palustris | Calla des marais |
| CAMPION, BLADDER * | Silene vulgaris | Silène enflé |
| CAMPION, WHITE (EVENING LYCHNIS) * | Silene latifolia | Compagnon blanc |
| CANCERROOT, ONE-FLOWERED | Orobanche uniflora | Orobanche uniflore |
| CELANDINE * | Chelidonium majus | Grande chélidoine |
| CELANDINE, LESSER * | Ranunculus ficaria | Renoncule ficaire |
| CHARLOCK * | Sinapis arvensis | Moutarde d`été |
| CHERRY, CHOKE (SHRUB) | Prunus virginiana | Cerisier à grappes |
| CHERVIL, BUR | Anthriscus caucalis | Anthrisque commun |
| CHESTNUT, HORSE (Tree) | Aesculus hippocastanum | Marronnier d'Inde |
| CHICKWEED, COMMON * | Stellaria media | Stellaire moyenne |
| CHICKWEED, JAGGED * | Holosteum umbellatum | Holostée à ombrelle |
| CHICKWEED, MOUSE-EAR * | Cerastium fontanum | Céraiste vulgaire |
| CICELY, SWEET | Osmorhiza claytoni | Osmorhize de clayton |
| CINQUEFOIL, COMMON | Potentilla simplex | Potentille simple |
| CINQUEFOIL, ROUGH | Potentilla norvegica ssp. Monspeliensis | Potentille de Norvège |
| CLEARWEED | Pilea pumila | Piléa nain ou petite ortie |
| CLEAVERS (BEDSTRAW) | Galium aparine | Gaillet gratteron |
| CLOVER, ALSIKE * | Trifolium hybridum | Trèfle alsike |
| CLOVER, RED * | Trifolium pratense | Trèfle rouge |
| CLOVER, WHITE * | Trifolium repens | Trèfle blanc |
| COHOSH, BLUE | Caulophyllum thalictroides | Caulophylie |
| COLTSFOOT * | Tussilago farfara | Tussilage pas d'âne |
| COLUMBINE, GARDEN * | Aquilegia vulgaris | Ancolie |
| COLUMBINE, WILD | Aquilegia canadensis | Ancolie du Canada |
| COMFREY, COMMON * | Symphytum officinale ssp.officinale | Consoude officinale |
| CRANBERRY, HIGHBUSH (SHRUB) | Viburnum trilobum | Viorne trilobée |
| CRESS, HAIRY ROCK | Arabis hirsuta ssp pycnocarpa | Arabette hirsute |
| CRESS, MOUSE-EAR * | Arabidopsis thaliana | Fausse arabette des dames |
| CRESS, PURPLE (PINK SPRING CRESS) | Cardamine douglassii | Cardamine de douglas |
| CRESS, SMOOTH ROCK | Arabis laevigata | Arbarette lisse |
| CRESS, SPRING | Cardamine bulbosa | Cardamine bulbeuse |
| CROWFOOT, CURSED | Ranunculus sceleratus | Renoncule scélérate |
| CROWFOOT, HOOKED | Ranunculus recurvatus | Renoncule recourbée |
| Currant, Buffalo * (Shrub) | Ribes odoratum | ( French not found ) |
| CURRANT, WILD BLACK (Shrub) | Ribes americanum | Gadellier noir |
| CURRENT, GARDEN (Shrub) | Ribes rubrum | Groseillier rouge |
| DAISY, OXEYE * | Chrysanthemum leucanthemum | Marguerite blanche |
| DANDELION, COMMON * | Taraxacum officinale | Pissenlit officinal |
| DANDELION, MARSH * | Taraxacum palustre | ( French not found ) |
| DANDELION, RED-SEEDED * | Taraxacum erythrospermum | Pissenlit à graines rouges |
| DEAD-NETTLE, PURPLE * | Lamium purpureum | Lamier pourpre |
| DEAD-NETTLE, SPOTTED * | Lamium maculatum | Lamier maculé |
| DOCK, CURLED * | Rumex crispus | Patience crépue |
| DOGWOOD, ALTERNATE-LEAVED (TREE) | Cornus alternifolia | Cornouiller à feuilles alternes |
| DOGWOOD, FLOWERING (TREE) | Cornus florida | Cornouiller fleuri |
| DOGWOOD, GRAY (SHRUB) | Cornus foemina ssp racemosa | Cornouiller à grappes |
| DOGWOOD, RED-OSIER (SHRUB) | Cornus stolonifera | Cornouiller stolonifère |
| DUTCHMAN'S BREECHES | Dicentra cucullaria | Dicentre à capuchon |
| ELDER, RED-BERRIED | Sambucus rasemosa ssp pubens | Sureau rouge du pacifique |
| FALSE MERMAID | Floerkea proserpinacoides | ( French not found ) |
| FLEABANE, COMMON | Erigeron philadelphicus | Érigéron de philadelphie |
| FLEABANE, DAISY | Erigeron annuus | Érigéron annuel |
| FOAMFLOWER | Tiarella cordifolia | Tiarelle cordifoliée |
| FORGET-ME-NOT, SMALLER | Myosotis laxa | Myositis laxiflore |
| FORGET-ME-NOT, TRUE * | Myosotis scorpioides | Myositis des marais |
| GERANIUM, WILD | Geranium maculatum | Géranium maculé |
| GOATSBEARD, MEADOW * | Tragopogon pratensis ssp pratensis | Salsifis des prés |
| GOATSBEARD, YELLOW * | Tragopogon dubius | Salsifis jaune |
| GOLDTHREAD | Coptis trifolia ssp. groenlandica | Coptide, savoyante |
| GOOSEBERRY, PRICKLY | Ribes cynosbati | Groseiller des chiens |
| GRAPE, RIVERBANK (VINE) | Vitis riparia | Vigne "vitis riparia" |
| GROUND IVY * | Glechoma hederacea | Lierre terrestre |
| GROUNDSEL, COMMON * | Senecio vulgaris | Séneçon vulgaire |
| HAWKWEED, COMMON * | Hieracium lachenalii | Épervière vulgaire |
| HAWKWEED, FIELD * | Hieracium caespitosum ssp caespitosum | Épervière des prairies |
| HAWKWEED, GLAUCOUS KING DEVIL * | Hieracium florentinum | Épervière fausse piloselle |
| HENBIT * | Lamium amplexicaule | Lamier amplexicaule |
| HEPATICA, ROUND-LOBED | Anemone americana | Hépatite d`Amérique |
| HEPATICA, SHARP-LOBED | Anemone acutiloba | Hépatique à lobes aigus |
| HERB ROBERT * | Geranium robertianum | Géranium de Robert |
| HONESTY * | Lunaria annua | Monnaie du pape |
| HONEYSUCKLE, AMUR * (SHRUB) | Lonicera maackii | Chèvrefeuille de maack |
| HONEYSUCKLE, GLAUCOUS (SHRUB) | Lonicera dioica | Chèvrefeuille dioïque |
| HONEYSUCKLE, HAIRY | Lonicera hirsuta | Chèvrefeuille hirsute |
| HONEYSUCKLE, MORROW'S * (SHRUB) | Lonicera morrowi | Chèvrefeuille |
| HONEYSUCKLE, TARTARIAN * (SHRUB) | Lonicera tatarica | Chèvrefeuille de tartarie |
| HOP-HORNBEAM (TREE) | Ostrya virginiana | Ostryer de virginie |
| HORSE GENTIAN, ORANGE-FRUITED | Triosteum aurantiacum | ( French not found ) |
| HOUND'S TONGUE * | Cynoglossum officinale | Cynoglosse officinale |
| HYACINTH, GRAPE * | Muscari botryoides | Muscari botryde |
| JACK-IN-THE-PULPIT | Arisaema triphyllum | Ariséma triphylle |
| LADY'S SLIPPER , SMALLER YELLOW | Cyprippedium calceolus parviflorum | Sabot de la vierge (petit) |
| LADY'S SLIPPER, YELLOW | Cypripedium calceolus pubescens | Sabot de la vierge (grand) |
| MALLOW, COMMON(CHEESES) * | Malva neglecta | Fromagère |
| MANDARIN, YELLOW | Disporum lanuginosum | ( French not found ) |
| MAPLE, MANITOBA (Tree) | Acer negundo L. | Érable à feuilles composées |
| MAPLE, MOUNTAIN (TREE) | Acer spicatum | Érable à épis |
| MAPLE, RED (Tree) | Acer rubrum | Érable rouge |
| MAPLE, SUGAR (TREE) | Acer saccharum | Érable à sucre |
| MARIGOLD, MARSH | Caltha palustris | Populage des marais |
| MAYAPPLE | Podophyllum peltatum | Podophylle pelté |
| MAYFLOWER, CANADA | Maianthemum canadense | Maïanthème du Canada |
| MAYWEED * | Anthemis cotula | Camomille puante |
| MEADOW-RUE, EARLY | Thalictrum dioicum | Pigamon dioïque |
| MEDICK, BLACK * | Medicago lupulina | Lupuline |
| MITERWORT | Mitella diphylla | Mitrelle à deuxfeuilles |
| MOUSE EAR * | Hieracium pilosella | Épervière piloselle |
| MUSTARD, FIELD * | Brassica rapa | Moutarde des champs |
| MUSTARD, GARLIC * | Alliaria petiolata | Alliaire officinale |
| MUSTARD, WORMSEED * | Erysimum cheiranthoides | Vélar fausse giroflée |
| NIGHTSHADE, BITTERSWEET * | Solanum dulcamara | Morelle douce-amère |
| OAK, PIN (Tree) | Quercus palustris | Chêne des marais |
| OLIVE, AUTUMN * | Elaeagnus umbellata | ( French not found ) |
| PANSY, FIELD | Viola arvensis | Violette des champs |
| PARSNIP, COW | Heracleum lanatum | Berce laineuse |
| PAWPAW (TREE) | Asimina triloba | Asiminier trilobé |
| PENNYCRESS, FIELD * | Thlaspi arvense | Tabouret des champs |
| PEPPERGRASS, FIELD * | Lepidium campestre | Lépidie des champs |
| PERIWINKLE * | Vinca minor | Pervenche mineur |
| PHLOX, WILD BLUE | Phlox divaricata | Phloxdivariqué |
| PIMPERNEL, YELLOW | Taenidia integerrima | Ténidia à feuilles entières |
| PINEAPPLE WEED * | Matricaria matricarioides | Matricaire odorante |
| PLANTAIN, ENGLISH * | Plantago lanceolata | Plantain lancéolé |
| PLUM, AMERICAN (TREE) | Prunus americana | Prunier d`amérique |
| PLUM, CANADA (TREE) | Prunus nigra | Prunier noir |
| PUSSYTOES, FIELD | Antennaria neglecta | Antennaire du Canada |
| PUSSYTOES, PARLIN'S | Antennaria parlinii ssp. fallaz | Antennaire de parlin |
| PUSSYTOES, SMALLER RARE IN H/W | Antennaria howellii ssp neodioica | Antennaire néodioïque |
| RAGWORT, GOLDEN | Senecio aureus | Séneçon doré |
| RASPBERRY, BLACK (SHRUB) | Rubus occidentalis | Framboisier noir |
| RASPBERRY, WILD RED (SHRUB) | Rubus idaeus | Framboisier sauvage |
| REDBUD (TREE) | Cercis canadensis | Gainier rouge |
| ROCKET, DAME'S * | Hesperis matronalis | Julienne des dames |
| ROCKET, YELLOW * | Barbarea vulgaris | Barbarée vulgaire |
| ROSE, SMOOTH (SHRUB) | Rosa blanda | Rosier inerme |
| RUSH, WOOD | Luzula multiflora | Luzule multiflore |
| SANDWORT, GROVE | Moehringia lateriflora | ( French not found ) |
| SANDWORT, THYME-LEAVED * | Arenaria serpyllifolia | Sabline à feuilles de serpolet |
| SARSAPARILLA, WILD | Aralia nudicaulis | Aralie à tige nue |
| SASSAFRAS (TREE) | Sassafras albidum | Sassafras officinal |
| SAXIFRAGE, EARLY | Saxifraga virginiensis | Saxifrage de virginie |
| SAXIFRAGE, GOLDEN | Chrysosplenium americanum | Dorine d'Amérique |
| SCORPION-GRASS, BLUE * | Myosotis stricta | Myosotis à tiges dressées |
| SEDGE, PENNSYLVANIA | Carex pensylvanica | Carex de Pennsylvanie |
| SHADBUSH UNKNOWN SPECIES (TREE) | Amélanchier | |
| SHADBUSH, COMMON (TREE) | Amelanchier arborea | Amélanchier arborescent |
| SHADBUSH, SMOOTH (TREE) | Amelanchier laevis | Amélanchier glabre |
| SHEPHERD'S PURSE * | Capsella bursa-pastoris | Bourse-à-pasteur |
| SILVERWEED | Potentilla anserina | Potentille ansérine |
| SNAKEROOT, BLACK | Sanicula marilandica | Sanicle du maryland |
| SNAKEROOT, SENECA | Polygala senega | Polygala sénéca |
| SOLOMON'S SEAL, FALSE | Maianthemum racemosa | Fauxsceau de salomon |
| SOLOMON'S SEAL, HAIRY | Polygonatum pubescens | Sceau-de-salomon pubescent |
| SOLOMON'S SEAL, STAR-FLOWERED FALSE | Maianthemum stellata | Smilacine étoilée |
| SORREL, SHEEP * | Rumex acetosella | Petite oseille |
| SPEEDWELL, BIRD'S EYE | Veronica chamaedrys | Véronique de perse |
| SPEEDWELL, COMMON * | Veronica officinalis | Véronique officinale |
| SPEEDWELL, CORN * | Veronica arvensis | Véronique des champs |
| SPEEDWELL, PERSIAN * | Veronica persica | Véronique de perse |
| SPEEDWELL, PURSLANE | Veronica peregrina | Véronique voyageuse |
| SPEEDWELL, SLENDER * | Veronica filiformis | Véronique filiforme |
| SPEEDWELL, THYME-LEAVED * | Veronica serpyllifolia | Véronique à feuilles de serpolet |
| SPEEDWELL, WAYSIDE * | Veronica polita | Véronique luisante |
| SPICEBUSH (SHRUB) | Lindera benzoin | Laurier benzoin |
| SPINDLE TREE * | Euonymus europaea | Fusain d'Europe |
| SPRING BEAUTY, CAROLINA | Claytonia caroliniana | Claytonie de caroline |
| SPRING BEAUTY, NARROW-LEAVED | Claytonia virginica | Claytonie |
| SPURGE, CYPRESS * | Euphorbia cyparissias | Euphorbe cyprès |
| SPURGE, LEAFY * | Euphorbia esula | Euphorbe âcre |
| SPURGE, PETTY * | Euphorbia peplus | Euphorbe des jardins |
| SQUIRREL-CORN | Dicentra canadensis | Dicentre du Canada |
| STARFLOWER | Trientalis borealis | Trientale boréale |
| STITCHWORT, LESSER * | Stellaria graminea | Stellaire graminée |
| STORKSBILL * | Erodium cicutarium | Érodium cicutaire |
| STRAWBERRY, BARREN | Waldsteinia fragarioides | Waldsteinia faux-fraisier |
| STRAWBERRY, FIELD | Fragaria virginiana ssp.glauca | Fraisier de Virginie |
| STRAWBERRY, WOODLAND | Fragaria vesca | Fraisier des bois |
| TAMARACK (TREE) | Larix laricina | Mélèze laricin |
| THIMBLEWEED | Anemone virginiana | Anémone de Virginie |
| TOADFLAX, STAR | Comandra umbellata | Comandre à ombrelles |
| TOOTHWORT(CRINKLEROOT) | Cardamine diphylla | Dentaire à 2 feuilles |
| TOOTHWORT, CUT-LEAVED | Cardamine concatenata | Dentaire |
| TREFOIL, BIRDSFOOT * | Lotus corniculatus | Lotier corniculé |
| TRILLIUM, RED | Trillium erectum | Trille rouge |
| TRILLIUM, WHITE | Trillium grandiflorum | Trille blanc |
| TROUT-LILY | Erythronium americanum | Érythrone d'Amérique |
| TROUT-LILY, WHITE | Erythronium albidum | ( French not found ) |
| TWINLEAF | Jeffersonia diphylla | ( French not found ) |
| TWISTED STALK, ROSE | Streptopus roseus | Streptope rose |
| VETCH, COW * | Vicia cracca | Vesce cracca |
| VETCH, SLENDER * | Vicia tetrasperma | Vesce à quatre graines |
| VIBURNUM, SWEET | Viburnum lentago | Viorne lentago |
| VIOLET, CANADA | Viola canadensis | Violette du Canada |
| VIOLET, COMMON | Viola sororia | Violette parente |
| VIOLET, DOG | Viola conspersa | Violette décombante |
| VIOLET, DOWNY YELLOW | Viola pubescens | Violette pubescente |
| VIOLET, LECONTE'S | Viola affinis | Violette affine |
| VIOLET, LONG-SPURRED | Viola rostrata | Violette rostrée |
| VIOLET, MARSH BLUE | Viola cucullata | Violette cucullée |
| VIOLET, N.BLUE | Viola septentrionalis | Violette septentrionale |
| VIOLET, N.WHITE * | Viola odorata | Violette odorante |
| VIOLET, SELKIRK'S | Viola Selkirkii | Violette de selkirk |
| VIOLET, SWEET WHITE | Viola blanda | Violette odorante? |
| WATERCRESS * | Nasturtium officinale | Cresson de fontaine |
| WATER-LEAF, VIRGINIA | Hydrophyllum virginianum | Hydrophylle de Virginie |
| WHITLOW GRASS * | Erophila verna | ( French not found ) |
| WILD GINGER | Asarum canadense | Asaret du Canada |
| WILLOW, WEEPING (TREE) | Salix x sepulcralis | Saule pleureur |
| WOOD BETONY | Pedicularis canadensis | La pédiculaire du Canada |
| WOOD SORREL, YELLOW | Oxalis stricta | Oxalide dressée |
Dean A. Gugler
Amateur Naturalist