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Criteria:   found in Colusa County  •   is not native  •  group by lifeform
449  records include photos for these plants # number of sources
Scientific Name Common Name Lifeform #
  Lifeform: Annual281 plants
  Lifeform: Biennial3 plants
  Lifeform: Perennial132 plants
Acroptilon repens ! Russian knapweed Perennial herb  
Agrostis avenacea ! Pacific bentgrass Perennial grass  
Agrostis gigantea Creeping bentgras Perennial grass 4
Agrostis semiverticillata Beardless rabbitsfoot grass Perennial grass  
Agrostis stolonifera ! Redtop Perennial grass 1
Agrostis viridis Bentgrass Perennial grass  
Alisma lanceolatum Water plantain Perennial herb (aquatic)  
Alopecurus pratensis ! Meadow foxtail Perennial grass 6
Arrhenatherum elatius Tall oatgrass Perennial grass 2
Arundo donax ! Giant reed Perennial grass 3
Atriplex semibaccata ! Australian saltbush Perennial herb 4
Barbarea vulgaris Yellow rocket Perennial herb  
Boehmeria cylindrica Smallspike false nettle Perennial herb  
Bolboschoenus glaucus Tubered bulrush Perennial grass  
Cardamine parviflora Sand bittercress Perennial herb  
Cardaria chalepensis Lens podded hoary cress Perennial herb  
Cardaria draba Heart podded hoary cress Perennial herb  
Cardaria pubescens White top Perennial herb  
Carduus acanthoides ! Spiny plumeless thistle Perennial herb  
Centaurea diffusa ! Diffuse knapweed Perennial herb  
Centaurea maculosa Spotted knapweed Perennial herb  
Centaurea stoebe ssp. micranthos ! Spotted knapweed Perennial herb  
Cerastium fontanum Common mouse ear chickweed Perennial herb  
Cerastium fontanum ssp. vulgare Common chickweed Perennial herb  
Chloris gayana Rhodes grass Perennial grass  
Cichorium intybus Chicory Perennial herb 9
Cirsium arvense ! Canada thistle Perennial herb  
Cirsium vulgare ! Bullthistle Perennial herb  
Coix lacryma-jobi Job's tears Perennial grass 2
Conium maculatum ! Poison hemlock Perennial herb  
Convolvulus arvensis Field bindweed Perennial herb, Vine  
Cortaderia jubata ! Andean pampas grass Perennial grass  
Cotula coronopifolia ! Brass buttons Perennial herb 2
Cynara cardunculus ! Cardoon Perennial herb 2
Cynodon dactylon ! Bermuda grass Perennial grass 4
Cyperus rotundus Nutgrass Perennial grass  
Dactylis glomerata ! Orchardgrass Perennial grass 6
Dipsacus fullonum ! Wild teasel Perennial herb  
Dracunculus vulgaris Common dracunculus Perennial herb 2
Egeria densa ! Brazilian water weed Perennial herb 1
Eichhornia crassipes ! Water hyacinth Perennial herb 1
Elymus hispidus Intermediate wheatgrass Perennial grass 6
Elymus ponticus Tall wheat grass Perennial grass 4
Elymus repens Quack grass Perennial grass  
Elytrigia elongata Tall wheatgrass Perennial grass 2
Elytrigia intermedia Intermediate wheatgrass Perennial grass 4
Elytrigia intermedia ssp. barbulata Barbed intermediate wheatgrass Perennial grass 1
Elytrigia intermedia ssp. intermedia Intermediate wheatgrass Perennial grass 2
Elytrigia pontica Tall wheatgrass Perennial grass 1
Elytrigia pontica ssp. pontica Rush wheatgrass Perennial grass 1
Elytrigia repens Quack grass Perennial grass  
Festuca arundinacea ! Reed fescue Perennial grass 7
Festuca pratensis Meadow fescue Perennial grass 2
Foeniculum vulgare ! Fennel Perennial herb 4
Hirschfeldia incana ! Mustard Perennial herb  
Holcus lanatus ! Common velvetgrass Perennial grass  
Hypericum perforatum ! Klamathweed Perennial herb 2
Hypochaeris radicata ! Hairy cats ear Perennial herb  
Juncus usitatus Perennial grass  
Kickxia elatine Sharp point fluellin Perennial herb  
Kickxia spuria Fluellin Perennial herb  
Lathyrus latifolius ! Sweet pea Perennial herb 3
Lathyrus venosus Veiny pea Perennial herb 5
Leontodon taraxacoides Hawkbit Perennial herb  
Lepidium appelianum ! Hairy whitetop Perennial herb  
Lepidium draba ! Whitetop Perennial herb  
Lepidium draba ssp. chalepense Lenspod whitetop Perennial herb  
Lepidium draba ssp. draba Whitetop Perennial herb  
Lepidium latifolium ! Perennial pepperweed Perennial herb  
Linaria dalmatica ssp. dalmatica ! Dalmatian toadflax Perennial herb  
Linaria genistifolia Broomleaf toadflax Perennial herb  
Linaria genistifolia ssp. dalmatica Dalmatian toad flax Perennial herb  
Lolium perenne Perennial rye grass Perennial grass 5
Lotus corniculatus Bird's foot trefoil Perennial herb 8
Ludwigia hexapetala ! Six petal water primrose Perennial herb  
Ludwigia peploides ! Marsh purslane Perennial herb 1
Marrubium vulgare ! White horehound Perennial herb 4
Medicago sativa Alfalfa Perennial herb 3
Mentha Xrotundifolia Apple mint Perennial herb 1
Mentha pulegium ! Pennyroyal Perennial herb 6
Mentha spicata Spearmint Perennial herb 7
Mentha spicata var. spicata Spearmint Perennial herb 7
Mentha suaveolens Apple mint Perennial herb 4
Myriophyllum aquaticum ! Parrot's feather Perennial herb (aquatic) 1
Myriophyllum spicatum ! Water milfoil Perennial herb  
Paspalum dilatatum Dallis grass Perennial grass  
Phalaris aquatica ! Harding grass Perennial grass 1
Phleum pratense Common timothy Perennial grass 4
Phyla caespitosa Perennial herb  
Phytolacca americana ! Pokeweed Perennial herb 2
Piptatherum miliaceum Smilo grass Perennial grass  
Plantago lanceolata ! Ribwort Perennial herb  
Plantago major Common plantain Perennial herb 2
Poa bulbosa Bulbous blue grass Perennial grass  
Poa bulbosa ssp. vivipara Bulbous blue grass Perennial grass  
Poa bulbosa var. vivipara Perennial grass  
Poa pratensis ! Kentucky blue grass Perennial grass 2
Polypogon australis Chilean beard grass Perennial grass  
Polypogon interruptus Ditch beard grass Perennial grass  
Polypogon viridis Water beard grass Perennial grass  
Potamogeton crispus ! Crispate leaved pondweed Perennial herb (aquatic)  
Poterium sanguisorba Garden burnet Perennial herb 6
Rhaponticum repens ! Russian knapweed Perennial herb  
Rumex acetosella ! Sheep sorrel Perennial herb 1
Rumex conglomeratus Green dock Perennial herb  
Rumex crispus ! Curly dock Perennial herb 4
Rumex obtusifolius Broadleaf dock Perennial herb  
Rumex pulcher Fiddleleaf dock Perennial herb  
Saccharum ravennae ! Ravennagrass Perennial grass 3
Sanguisorba minor ssp. muricata Garden burnet Perennial herb  
Saxifraga virginiensis Early saxifrage Perennial herb  
Schoenoplectus mucronatus Bog bulrush Perennial grass  
Scirpus mucronatus Bog bulrush Perennial grass  
Solanum elaeagnifolium Horse nettle Perennial herb  
Sonchus arvensis Perennial sow thistle Perennial herb  
Sorghum halepense Johnsongrass Perennial grass  
Sporobolus indicus Smutgrass Perennial grass  
Stipa miliacea Smilo grass Perennial grass  
Stipa miliacea var. miliacea ! Smilo grass Perennial grass  
Taraxacum officinale Red seeded dandelion Perennial herb 1
Thinopyrum intermedium Intermediate wheatgrass Perennial grass 1
Thinopyrum ponticum Tall wheatgrass Perennial grass 1
Trifolium fragiferum Strawberry clover Perennial herb 6
Trifolium repens White clover Perennial herb 9
Trillium sessile Toadshade Perennial herb 7
Typha angustifolia Narrow leaf cattail Perennial herb (aquatic)  
Verbascum blattaria Moth mullein Perennial herb 1
Verbascum thapsus ! Woolly mullein Perennial herb 3
Veronica anagallis-aquatica Water speedwell Perennial herb  
Veronica catenata Chain speedwell Perennial herb  
Vicia cracca Bird vetch Perennial herb, Vine  
Vinca major ! Vinca Perennial herb 4
  Lifeform: Shrub21 plants
  Lifeform: Tree11 plants
 
Pink background indicates a plant is non-native.
! indicates a plant is potentially invasive.
NB: found in Colusa County is intended to indicate only plants found growing in the wild. However, the evidence is not always clear, and may occasionally include plants found in cultivation. To verify the wild presence of any particular plant in the list above, please click through to Calflora and look closely at the observations in this county.