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From RoguesGallery
Contents
Posey’s Rogues: A Gallery of Exotic Invasive and Non-invasive Plants of Alberta
Introduction
- Aliens Invade Alberta
- The word "weed" may come to mind
- What's the big deal?
- Does Alien = Invasive?
- What to do?
- Control
- If you can't beat'em, eat'em
- Cautions and invitation
Getting started
Have a name, and want to find information? Use the search function in the top right corner to find all references to either a common or scientific name.
Have a plant, and want to know what it is? At present all we can offer are the thumbnails in The Rogue's Portrait Galleries, below, which link to more information if you can find a picture that matches your plant.
Want to contribute? See Notes for Contributors.
Interested in Alberta weed regulations? See Act and Regulations or Weed regulation.
Consult the Mediawiki User's Guide for information on using the software. Try editing where it will do no harm, in the Sandbox
Posey’s Rogues Portrait Galleries
Some species have no pictures at all, and the gallery only has pictures that might be of help while browsing thumbnails for an unidentified plant. On individual species pages (accessed from the list of species below) there are additional pictures.
List of species
Plant species regulated by Alberta's Weed Control Act are listed on page 7 of the WEED CONTROL REGULATION. [1]
The species in the table below are generally listed as invasive by one or more authorities. All are alien in Alberta, unless noted otherwise (some native species are included to differentiate them from similar exotics). Many additional species are regarded as weeds --- alien species known to occur in Alberta (but not known to be invasive), or native species regarded as pests in agricultural settings. Some native species can be invasive (e.g. Aspen incursion into grassland) when not limited by historic disturbance regimes, but they are not listed here.
| Common Name | 'Scientific Name' | Family |
|---|---|---|
| velvet-leaf | Abutilon theophrasti Medik. | Malvaceae |
| Manitoba maple | Acer negundo L. | Aceraceae |
| Norway maple | Acer platanoides L. | Aceraceae |
| yarrow | Achillea millefolium L. var. millefolium | Asteraceae |
| jointed goatgrass | Aegilops cylindrica Host | Poaceae |
| goutweed | Aegopodium podagraria L. | Apiaceae |
| crested wheatgrass | Agropyron pectiniforme (Bieb.) Tzvelev | Poaceae |
| quack grass | Agropyron repens (L.) P. Beauv. | Poaceae |
| creeping bentgrass | Agrostis stolonifera L. | Poaceae |
| garlic mustard | Alliaria petiolata (Bieb.) Cavara & Grande | Brassicaceae |
| creeping meadow foxtail | Alopecurus arundinaceus Poir. | Poaceae |
| slender foxtail | Alopecurus myosuroides Huds. | Poaceae |
| meadow foxtail | Alopecurus pratensis L. | Poaceae |
| red-root pigweed | Amaranthus retroflexus L. | Amaranthaceae |
| ragweed | Ambrosia artemisiifolia L. | Asteraceae |
| Amur peppervine | Ampelopsis brevipedunculata (Maxim.) Trautv. | Vitaceae |
| yellow chamomile | Anthemis tinctoria L. | Asteraceae |
| wild chervil | Anthriscus sylvestris (L.) Hoffm. | Apiaceae |
| great burdock | Arctium lappa L. | Asteraceae |
| common Burdock | Arctium minus Bernh. | Asteraceae |
| woolly burdock | Arctium tomentosum P. Mill. | Asteraceae |
| European (woodland) burdock | Arctium vulgare (Hill) Evans | Asteraceae |
| absinth | Artemisia absinthium L. | Asteraceae |
| cicer milkvetch | Astragalus cicer L. | Fabaceae |
| spear Saltbush | Atriplex patula L. | Chenopodiaceae |
| wild Oat | Avena fatua L. | Poaceae |
| 5-horn smotherweed | Bassia hyssopifolia (Pall.) Kuntze | Chenopodioideae |
| Japanese barberry | Berberis thunbergii L. | Berberidaceae |
| European or common barberry | Berberis vulgaris L. | Berberidaceae |
| hoary-alyssum | Berteroa incana (L.) DC. | Brassicaceae |
| smooth brome | Bromus inermis var. inermis L. | Poaceae |
| Japanese chess | Bromus japonicus Thunb. ex Murr. | Poaceae |
| cheatgrass | Bromus tectorum L. | Poaceae |
| flowering-rush | Butomus umbellatus L. | Butomaceae |
| big-seed false flax | Camelina sativa (L.) Crantz | Brassicaceae |
| creeping bellflower | Campanula rapunculoides L. | Campanulaceae |
| shepherd's-purse | Capsella bursa-pastoris (L.) Medik. | Brassicaceae |
| caragana or Siberian peashrub | Caragana arborescens Lam. | Fabaceae |
| hoary cress, whitetop | Cardaria spp. Desv. | Brassicaceae |
| plumeless thistle | Carduus acanthoides L. | Asteraceae |
| nodding thistle | Carduus nutans L. | Asteraceae |
| Safflower | Carthamnus tinctorius L. | Asteraceae |
| caraway | Carum carvi L. | Apiaceae |
| Japanese bittersweet | Celastrus orbiculatus Thunb. | Celastraceae |
| diffuse knapweed | Centaurea diffusa Lam. | Asteraceae |
| brown knapweed | Centaurea jacea L. | Asteraceae |
| bighead knapweed | Centaurea macrocephala Puschk. ex Willd. | Asteraceae |
| mountain knapweed | Centaurea montana L. | Asteraceae |
| black knapweed | Centaurea nigra L. | Asteraceae |
| Tyrol knapweed | Centaurea nigrescens Willd. | Asteraceae |
| Russian knapweed | Centaurea repens (L.) DC. | Asteraceae |
| yellow starthistle | Centaurea solstitialis L. | Asteraceae |
| spotted knapweed | Centaurea stoebe L. ssp. micranthos (Gugler) Hayek | Asteraceae |
| squarrose knapweed | Centaurea virgata Lam. ssp. squarrosa (Willd.) Gugler | Asteraceae |
| meadow knapweed | Centaurea x moncktonii C. E. Britton | Asteraceae |
| hybrid knapweed | Centaurea x psammogena Gáyer | Asteraceae |
| chickweed | Cerastium vulgatum L. | Caryophyllaceae |
| celandine | Chelidonium majus L. | Papaveraceae |
| lamb's-quarters | Chenopodium album L. | Chenopodioideae |
| rush skeletonweed | Chondrilla juncea L. | Asteraceae |
| creeping thistle | Cirsium arvense (L.) Scop. | Asteraceae |
| marsh thistle | Cirsium palustre (L.) Scop. | Asteraceae |
| bull thistle | Cirsium vulgare (Savi) Ten. | Asteraceae |
| yellow clematis* | Clematis tangutica (Maxim.) Korsh. | Ranunculaceae |
| evergreen clematis | Clematis vitalba L. | Ranunculaceae |
| poison hemlock | Conium maculatum L. | Apiaceae |
| field bindweed* | Convolvulus arvensis L. | Convolvulaceae |
| crown vetch | Coronilla varia L. | Fabaceae |
| Peking cotoneaster | Cotoneaster acutifolius Turcz. | Rosaceae |
| red-fruited cotoneaster | Cotoneaster integerrimus Medik. | Rosaceae |
| dark-seed cotoneaster | Cotoneaster niger (Thunb.) Fries | Rosaceae |
| annual hawksbeard | Crepis tectorum L. | Asteraceae |
| common crupina* | Crupina vulgaris Pers. ex Cass. | Asteraceae |
| dodder | Cuscuta spp. L. | Convolvulaceae |
| hound's-tongue* | Cynoglossum officinale L. | Boraginaceae |
| yellow nutsedge* | Cyperus esculentus L. | Cyperaceae |
| Scotch broom | Cytisus scoparius (L.) Link | Fabaceae |
| orchardgrass | Dactylis glomerata L. | Poaceae |
| jimson weed, Chinese thorn-apple | Datura sp. L. | Solanaceae |
| flixweed or tansy mustard | Descurainia sophia (L.) Webb ex Prantl | Brassicaceae |
| fuller's or common teasel | Dipsacus fullonum ' L. | Caprifoliaceae |
| fetid marigold | Dyssodia papposa (Vent.) Hitchc. | Asteraceae |
| barnyard grass | Echinochloa crusgalli (L.) Beauv. | Poaceae |
| wild cucumber | Echinocystis lobata (Michx.) Torr. & Gray | Cucurbitoideae |
| globe thistle | Echinops sp. L. | Asteraceae |
| blueweed* | Echium vulgare L. | Boraginaceae |
| Russian olive | Elaeagnus angustifolia L. | Elaeagnaceae |
| autumn olive* | Elaeagnus umbellata Thunb. | Elaeagnaceae |
| California filaree | Erodium cicutarium (L.) L'Hér. ex Aiton | Geraniaceae |
| dog mustard | Erucastrum gallicum (Willd.) O.E. Schulz | Brassicaceae |
| sea holly | Eryngium planum L. | Apiaceae |
| wormseed mustard | Erysimum cheiranthoides L. | Brassicaceae |
| cypress spurge | Euphorbia cyparissias L. | Euphorbiaceae |
| leafy spurge* | Euphorbia esula L. | Euphorbiaceae |
| myrtle spurge | Euphorbia myrsinites L. | Euphorbiaceae |
| Tartary buckwheat | Fagopyrum tataricum (L.) Gaertn. | Polygonaceae |
| Japanese knotweed* | Fallopia japonica (Houtt.) Ronse Decr. | Polygonaceae |
| giant knotweed* | Fallopia sachalinensis (F. Schmidt ex Maxim.) Ronse Decr. | Polygonaceae |
| hybrid Japanese knotweed* | Fallopia x bohemica (Chrtek & Chrtková) J. P. Bailey | Polygonaceae |
| creeping red fescue | Festuca rubra L. | Poaceae |
| green ash | Fraxinus pennsylvanica Marshall | Oleaceae |
| hemp nettle | Galeopsis tetrahit L. | Lamiaceae |
| cleavers | Galium aparine L. | Rubiaceae |
| sweet woodruff | Galium odoratum (L.) Scop. | Rubiaceae |
| false cleavers | Galium spurium L. | Rubiaceae |
| Yellow bedstraw | Galium verum L. | Rubiaceae |
| yellow gentian | Gentiana lutea L. | Gentianaceae |
| reed mannagrass | Glyceria maxima (Hartm.) Holmb. | Poaceae |
| baby's-breath | Gypsophila paniculata L. | Caryophyllaceae |
| Showy baby's-breath | Gypsophila elegans M. Bieb. | Caryophyllaceae |
| saltlover | Halogeton glomeratus (M. Bieb.) C.A. Mey. | Amaranthaceae |
| giant hogweed | Heracleum mantegazzianum Sommier & Levier | Apiaceae |
| dame's rocket | Hesperis matronalis L. | Brassicaceae |
| orange hawkweed | Hieracium aurantiacum L. | Asteraceae |
| meadow hawkweed | Hieracium caespitosum Dumort. | Asteraceae |
| mouse-ear hawkweed | Hieracium pilosella L. | Asteraceae |
| tall hawkweed | Hieracium piloselloides Vill. | Asteraceae |
| sea buckthorn | Hippophae rhamnoides L. | Elaeagnaceae |
| waterthyme, hydrilla | Hydrilla verticillata (L. f.) Royle | Hydrocharitaceae |
| European frog's-bit | Hydrocharis morsus-ranae L. | Hydrocharitaceae |
| black henbane | Hyoscyamus niger L. | Solanaceae |
| klamath weed | Hypericum perforatum L. | Hypericaceae |
| Himalayan balsam | Impatiens glandulifera L. | Balsaminaceae |
| yellow flag iris | Iris pseudacorus L. | Iridaceae |
| dyer's woad | Isatis tinctoria L. | Brassicaceae |
| tansy ragwort | Jacobaea vulgaris Gaertn. | Asteraceae |
| field scabious | Knautia arvensis (L.) J.M. Coult. | Caprifoliaceae |
| summer cypress | Kochia scoparia (L.) Schrad. | Amaranthaceae |
| henbit or dead nettle | Lamium amplexicaule L. | Lamiaceae |
| blue-bur | Lappula squarrosa (Retz.) Dumort. | Boraginaceae |
| globe-podded hoary cress | Lepidium appelianum Al-Shehbaz | Brassicaceae |
| lens-podded hoary cress | Lepidium chalepense L. | Brassicaceae |
| heart-podded hoary cress | Lepidium draba L. | Brassicaceae |
| perennial peppergrass | Lepidium latifolium L. | Brassicaceae |
| Chinese bush-clover | Lespedeza cuneata (Dum. Cours.) G. Don | Fabaceae |
| ox-eye daisy | Leucanthemum vulgare Lam. | Asteraceae |
| Dalmatian toadflax | Linaria dalmatica (L.) Mill. | Plantaginaceae |
| toadflax | Linaria vulgaris Mill. | Plantaginaceae |
| Persian darnel | Lolium persicum Boiss. & Hohen. ex Boiss. | Poaceae |
| Tatarian honeysuckle | Lonicera tatarica L. | Caprifoliaceae |
| Maltese cross | Lychnis chalcedonica L. | Caryophyllaceae |
| purple loosestrife* | Lythrum salicaria L. | Lythraceae |
| round-leaved mallow | Malva rotundifolia L., nom. utique rej. | Malvaceae |
| high mallow | Malva sylvestris L. | Malvaceae |
| low mallow | Malva pusilla Sm. | Malvaceae |
| scentless chamomile | Matricaria perforata | |
| black medick | Medicago lupulina L. | Fabaceae |
| alfalfa | Medicago sativa L. | Fabaceae |
| white sweetclover | Melilotus albus Medik. | Fabaceae |
| yellow sweetclover | Melilotus officinale (L.) Lam. | Fabaceae |
| Eurasian water-milfoil | Myriophyllum spicatum L. | Haloragaceae |
| watercress | Nasturtium officinale L. | Brassicaceae |
| catnip | Nepeta cataria L. | Lamiaceae |
| ball mustard | Neslia paniculata L. | Brassicaceae |
| red bartsia | Odontites vernus (Bellardi) Dumort. | Orobanchaceae |
| sainfoin | Onobrychis viciifolia Scop. | Fabaceae |
| blindeyes | Papaver dubium L. | Papaveraceae |
| corn poppy | Papaver rhoeas L. | Papaveraceae |
| parsnip | Pastinaca sativa L. | Apiaceae |
| African rue | Peganum harmala L. | Nitrariaceae |
| reed canary grass | Phalaris arundinacea L. | Poaceae |
| timothy | Phleum pratense L. | Poaceae |
| common reed | Phragmites australis (Cav.) Trin. ex Steud. | Poaceae |
| Norway spruce | Picea abies(L.) Karst. | Pinaceae |
| Burnet-saxifrage | Pimpinella saxifraga L. | Apiaceae |
| Scotch pine | Pinus sylvestris L. | Pinaceae |
| common plantain, whiteman's foot | Plantago major L. | Plantaginaceae |
| Canada bluegrass | Poa compressa L. | Poaceae |
| Kentucky bluegrass | Poa pratensis L. | Poaceae |
| common or yard knotweed | Polygonum arenastrumJord. ex Boreau | Polygonaceae |
| Wild Buckwheat | Polygonum convolvulus L. | Polygonaceae |
| tearthumb, mile-a-minute vine | Polygonum perfoliatum L. | Polygonaceae |
| lady's-thumb | Polygonum persicaria L. | Polygonaceae |
| white poplar | Populus alba L. | Salicaceae |
| curly pondweed | Potamogeton crispus L. | Potamogetonaceae |
| sulphur cinquefoil | Potentilla recta L. | Rosaceae |
| tall buttercup | Ranunculus acris | |
| creeping buttercup | Ranunculus repens | |
| wild radish | Raphanus raphanistrum | |
| common buckthorn | Rhamnus cathartica | |
| glossy buckthorn | Rhamnus frangula (Frangula alnus) | |
| Russian knapweed | Rhaponticum repens | |
| curled dock | Rumex crispus | |
| yard dock | Rumex longifolius (R. domesticus) | |
| tumbleweed | Salsola collina | |
| Russian tumbleweed | Salsola pestifer (S. tragus) | |
| elderberry | Sambucus racemosa var. pubens | |
| cowcockle | Saponaria vaccaria (Vaccaria hispanica) | |
| tall fescue | Schedonorus phoenix | |
| knawel | Scleranthus annuus | |
| tansy ragwort | Senecio jacobaea | |
| green foxtail | Setaria viridis | |
| white campion | Silene alba (S. latifolia ssp. alba) | |
| Maltese cross | Silene chalcedonica | |
| Balkan catchfly | Silene cserei | |
| bladder campion | Silene cucubalus | |
| night-flowering catchfly | Silene noctiflora | |
| milk thistle | Silybum marianum | |
| corn mustard | Sinapis arvensis | |
| tumbling mustard | Sisymbrium altissimum | |
| tallhedge or small tumbleweed mustard | Sisymbrium loeselii | |
| perennial sow thistle | Sonchus arvensis | |
| spiny sow thistle | Sonchus asper | |
| annual sow thistle | Sonchus oleraceus | |
| perennial sow thistle | Sonchus arvensis ssp. uliginosus | |
| European mountain ash | Sorbus aucuparia | |
| aleppo grass | Sorghum halepense | |
| aorn spurry | Spergula arvensis | |
| common chickweed | Stellaria media | |
| Japanese lilac | Syringa reticulata | |
| lilac | Syringa vulgaris | |
| medusahead | Taeniatherum caput-medusae | |
| 5-stamen tamarisk | Tamarix chinensis | |
| smallflower tamarisk | Tamarix parviflora | |
| saltcedar or tamarisk | Tamarix ramosissima | |
| tansy | Tanacetum vulgare | |
| thesium | Thesium arvense | |
| dandelion | Taraxacum officinale | |
| stinkweed | Thlaspi arvense | |
| goat's-beard | Tragopogon dubius | |
| puncturevine | Tribulus terrestris | |
| Alsike clover | Trifolium hybridum | |
| red Clover | Trifolium pratense | |
| white Clover | Trifolium repens | |
| clovers | Trifolium sp. | |
| scentless chamomile | Tripleurospermum perforatum | |
| cattails | Typha species | |
| Siberian elm | Ulmus pumila | |
| mullein | Verbascum thapsus | |
| European highbush cranberry | Viburnum opulus, but not ssp. trilobum | |
| one-sided vetch | Vicia cracca | |
| rattail fescue | Vulpia myuros (Festuca myuros) |
