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Criteria:   found in Merced County  •   is not native  •  group by lifeform
429  records include photos for these plants # number of sources
Scientific Name Common Name Lifeform #
  Lifeform: Annual269 plants
Aira caryophyllea Silvery hairgrass Annual grass  
Alopecurus myosuroides Slender meadow foxtail Annual grass  
Amaranthus albus Tumbleweed Annual herb  
Amaranthus arenicola Sandhill amaranth Annual herb  
Amaranthus retroflexus Rough pigweed Annual herb  
Amaranthus rudis Roughfruit amaranth Annual herb  
Amaranthus tuberculatus Common waterhemp Annual herb  
Anagallis arvensis Scarlet pimpernel Annual herb 3
Anthemis cotula Dog fennel Annual herb  
Anthoxanthum odoratum ! Sweet vernal grass Annual, Perennial grass 3
Anthriscus caucalis Bur chevril Annual herb, Vine  
Apium graveolens Celery Annual, Biennial herb 1
Artemisia biennis Biennial sagewort Annual, Perennial herb  
Atriplex heterosperma Two scale saltbush Annual herb  
Atriplex micrantha Twoscale saltbush Annual herb  
Atriplex prostrata Fat-hen Annual herb 1
Atriplex rosea Redscale Annual herb  
Atriplex suberecta Peregrine saltbush Annual herb  
Atriplex triangularis Spearscale Annual herb 1
Avena barbata ! Slim oat Annual grass  
Avena fatua ! Wildoats Annual grass 2
Bacopa rotundifolia Round leaf water hyssop Annual, Perennial herb  
Bassia hyssopifolia ! Fivehorn smotherweed Annual herb  
Brassica juncea India mustard Annual herb  
Brassica nigra ! Black mustard Annual herb  
Brassica rapa ! Common mustard Annual herb  
Briza maxima ! Rattlesnake grass Annual grass 3
Briza minor Little rattlesnake grass Annual grass  
Bromus arenarius Australian chess Annual grass  
Bromus berteroanus Chilean chess Annual grass  
Bromus catharticus Rescue grass Annual, Perennial grass  
Bromus catharticus var. elatus Chilean brome Annual, Perennial grass  
Bromus diandrus ! Ripgut brome Annual grass  
Bromus hordeaceus ! Soft chess Annual grass 4
Bromus hordeaceus ssp. hordeaceus Soft brome Annual grass 1
Bromus madritensis Foxtail chess, foxtail brome Annual grass  
Bromus madritensis ssp. rubens ! Foxtail brome Annual grass 2
Bromus rubens ! Red brome Annual grass 2
Bromus stamineus Roadside brome Annual, Perennial grass  
Bromus sterilis Sterile brome Annual grass  
Bromus tectorum ! Downy chess Annual grass  
Bromus trinii Chilian chess Annual grass  
Capsella bursa-pastoris Shepherd's purse Annual herb 1
Carduus pycnocephalus ! Italian thistle Annual herb  
Carduus pycnocephalus ssp. pycnocephalus Italian thistle Annual herb  
Carduus tenuiflorus ! Slender flowered thistle Annual herb  
Cenchrus incertus Coast sandbur Annual grass  
Cenchrus longispinus ! Mat sandbur Annual grass  
Centaurea melitensis ! Tocalote Annual herb  
Centaurea solstitialis ! Yellow starthistle Annual herb  
Centaurium erythraea European centaury Annual herb 1
Centaurium tenuiflorum Slender centaury Annual herb 1
Cerastium glomeratum Large mouse ears Annual herb  
Chamaesyce maculata Spotted spurge Annual herb  
Chamaesyce nutans Large spurge Annual herb  
Chenopodium album Lambs quarters Annual herb  
Chenopodium ambrosioides Mexican tea Annual, Perennial herb 3
Chenopodium ambrosioides var. suffruticosum Wormseed Annual, Perennial herb  
Chenopodium botrys Jerusalem oak goosefoot Annual herb  
Chenopodium macrospermum Largeseed goosefoot Annual herb  
Chenopodium multifidum Cut leaved goosefoot Annual, Perennial herb  
Chenopodium murale Nettle leaf goosefoot Annual herb  
Chenopodium pumilio Tasmanian goosefoot Annual herb  
Chloris virgata Feather finger grass Annual grass 1
Chorispora tenella Crossflower Annual herb  
Ciclospermum leptophyllum Marsh parsley Annual herb  
Consolida ajacis Doubtful knight's spur Annual herb 6
Consolida ambigua Doubtful knight's spur Annual herb 1
Conyza bonariensis South american horseweed Annual herb  
Conyza floribunda Tropical horseweed Annual herb  
Coreopsis tinctoria Calliopsis Annual herb 13
Coriandrum sativum Cilantro Annual herb 4
Coronopus didymus Lesser swine cress Annual herb  
Cotula australis Brass buttons Annual herb  
Crassula tillaea Mediterranean pygmy weed Annual herb 1
Crepis setosa Rough hawksbeard Annual herb  
Crepis vesicaria Beaked hawksbeard Annual, Perennial herb  
Crepis vesicaria ssp. taraxacifolia Weedy hawksbeard Annual, Perennial herb  
Crypsis schoenoides Swamp grass Annual grass  
Crypsis vaginiflora African prickle grass Annual grass  
Cuscuta japonica Japanese dodder Annual herb, Vine (parasitic)  
Cycloloma atriplicifolium Winged pigweed Annual herb  
Cyclospermum leptophyllum Marsh parsley Annual herb  
Cynosurus echinatus ! Dogtail grass Annual grass  
Cyperus difformis Variable flatsedge Annual grass  
Digitaria ischaemum Smooth crabgrass Annual grass  
Digitaria sanguinalis Crabgrass Annual grass  
Dimorphotheca sinuata African daisy Annual herb 4
Dittrichia graveolens ! Stinkwort Annual herb  
Dysphania ambrosioides Mexican tea Annual, Perennial herb 3
Dysphania botrys Jerusalem oak goosefoot Annual herb  
Dysphania chilensis Annual herb  
Dysphania multifida Cut leaved goosefoot Annual, Perennial herb  
Dysphania pumilio Tasmanian goosefoot Annual herb  
Echinochloa colona Jungle rice Annual grass  
Echinochloa crus-galli Barnyard grass Annual grass  
Eleusine tristachya Three spiked goosegrass Annual grass  
Elymus caput-medusae ! Medusa head Annual grass  
Eragrostis pilosa Indian lovegrass Annual grass  
Erigeron bonariensis Flax-leaved horseweed Annual herb  
Erigeron sumatrensis Tropical horseweed Annual herb  
Eriochloa contracta Dense cupgrass Annual grass  
Erodium botrys Big heron bill Annual herb  
Erodium brachycarpum White stemmed filaree Annual herb  
Erodium cicutarium ! Coastal heron's bill Annual herb 4
Erodium moschatum Whitestem filaree Annual herb  
Erysimum repandum Spreading wallflower Annual herb  
Euphorbia maculata Spotted spurge Annual herb  
Euphorbia serpens Matted sandmat Annual herb  
Festuca bromoides Brome fescue Annual grass  
Festuca myuros ! Rattail sixweeks grass Annual grass 4
Festuca perennis ! Italian rye grass Annual, Perennial grass 7
Festuca temulenta Darnel, tares Annual grass  
Filago gallica Narrow leaved filago Annual herb  
Galium divaricatum Lamarck's bedstraw Annual herb  
Galium parisiense Wall bedstraw Annual herb  
Galium spurium Sticky willy Annual herb  
Gastridium phleoides Nit grass Annual grass  
Geranium dissectum ! Wild geranium Annual herb  
Geranium molle Crane's bill geranium Annual, Perennial herb  
Geranium palmatum Canary island geranium Annual herb  
Geranium robertianum Robert's geranium Annual herb 1
Glinus lotoides Lotus sweetjuice Annual herb  
Gnaphalium luteo-album Common cudweed Annual herb  
Gnaphalium luteoalbum Jersey cudweed Annual herb  
Hedypnois cretica Crete weed Annual herb  
Hedypnois rhagadioloides Crete weed Annual herb  
Helianthus laciniatus Alkali sunflower Annual, Perennial herb  
Heliotropium europaeum European heliotrope Annual herb  
Helminthotheca echioides ! Bristly ox-tongue Annual, Perennial herb  
Herniaria hirsuta Herniaria Annual herb  
Herniaria hirsuta ssp. cinerea Grey herniaria Annual herb  
Herniaria hirsuta var. cinerea Herniaria Annual herb  
Hibiscus trionum Flower of an hour Annual herb 2
Hordeum marinum Seaside barley Annual grass  
Hordeum marinum ssp. gussoneanum ! Barley Annual grass  
Hordeum murinum ! Foxtail barley Annual grass  
Hordeum murinum ssp. glaucum Foxtail Annual grass  
Hordeum murinum ssp. leporinum Farmer's foxtail Annual grass  
Hordeum vulgare Common barley Annual grass 5
Hypochaeris glabra ! Smooth cats ear Annual herb  
Ipomoea purpurea Common morning glory Annual herb 2
Juncus capitatus Leafy bracted dwarf rush Annual grass  
Kochia scoparia ! Summer cypress Annual herb  
Koeleria gerardi Annual june grass, bristly koeleria Annual grass  
Koeleria gerardii Annual june grass, bristly koeleria Annual grass  
Koeleria phleoides Bristly koeler's grass Annual grass  
Lactuca serriola Prickly lettuce Annual herb  
Lamarckia aurea Goldentop Annual grass  
Lamium amplexicaule Henbit Annual herb  
Lapsana communis Common nipplewort Annual herb  
Leontodon saxatilis Hawkbit Annual herb  
Lepidium chalepense ! Lens-podded hoary cress Annual, Perennial herb  
Lepidium didymum Lesser swine cress Annual herb  
Lepidium perfoliatum Klamath pepper grass Annual herb  
Lepidium pinnatifidum Wayside pepper grass Annual, Perennial herb  
Linaria maroccana Moroccan toad flax Annual herb 9
Logfia gallica Narrowleaf cottonrose Annual herb  
Lolium multiflorum Italian rye grass Annual, Biennial grass 6
Lolium temulentum Darnel Annual grass  
Lysimachia arvensis Scarlet pimpernel Annual herb 5
Lythrum hyssopifolia ! Hyssop loosestrife Annual, Perennial herb  
Lythrum hyssopifolium Hyssop loosestrife Annual, Perennial herb  
Lythrum tribracteatum Three bracted loosestrife Annual herb  
Malva neglecta Dwarf mallow Annual, Perennial herb  
Malva parviflora Cheeseweed Annual herb  
Medicago orbicularis Round leafed medick Annual herb  
Medicago polymorpha ! California burclover Annual herb  
Melilotus alba Sweetclover Annual, Biennial herb 2
Melilotus albus White sweetclover Annual, Biennial herb 2
Melilotus indicus Annual yellow sweetclover Annual herb  
Melilotus officinalis Yellow sweetclover Annual, Biennial herb 2
Mesembryanthemum nodiflorum ! Small flowered iceplant Annual herb  
Mollugo verticillata Indian chickweed Annual herb  
Nicotiana acuminata Manyflower tobacco Annual herb  
Nicotiana acuminata var. multiflora Many flowered tobacco Annual herb  
Oenothera laciniata Southern evening primrose Annual, Perennial herb  
Panicum capillare ssp. hillmanii Hillman's panicgrass Annual grass  
Panicum dichotomiflorum Smooth witchgrass Annual grass  
Panicum dichotomiflorum ssp. dichotomiflorum Fall panic grass Annual grass  
Panicum hillmanii Hillman's panicgrass Annual grass  
Parapholis incurva Sickle grass Annual grass  
Pennisetum glaucum Pearl millet Annual, Perennial grass 1
Persicaria hydropiper Common smartweed Annual herb  
Persicaria maculosa Spotted ladysthumb Annual herb  
Persicaria pensylvanica Pinkweed Annual herb  
Phalaris caroliniana Carolina canarygrass Annual grass  
Phalaris minor Mediterranean canarygrass Annual grass  
Phalaris paradoxa Hood canarygrass Annual grass  
Physalis lanceifolia Narrow leaf tomatillo Annual herb  
Physalis lancifolia Narrow leaf tomatillo Annual herb  
Picris echioides Bristly ox tongue Annual, Perennial herb  
Plantago coronopus Cut leaf plantain Annual herb  
Plantago heterophylla Slender plantain Annual, Perennial herb  
Plantago hookeriana California plantain Annual herb 6
Plantago pusilla Little plantain Annual herb  
Poa annua Annual blue grass Annual grass  
Polygonum arenastrum Common knotweed Annual, Perennial herb  
Polygonum argyrocoleon Silver sheath knotweed Annual herb  
Polygonum aviculare Prostrate knotweed Annual, Perennial herb  
Polygonum aviculare ssp. aviculare Prostrate knotweed Annual, Perennial herb  
Polygonum aviculare ssp. depressum Prostrate knotweed Annual, Perennial herb  
Polygonum hydropiper Common smartweed Annual herb  
Polygonum patulum Bellard's smartweed Annual herb  
Polygonum pensylvanicum Pinkweed Annual herb  
Polygonum persicaria Lady's thumb Annual herb  
Polygonum ramosissimum Yellow knotweed Annual herb  
Polypogon maritimus Mediterranean beard grass Annual grass  
Polypogon monspeliensis ! Annual beard grass Annual grass 2
Portulaca oleracea Common purslane Annual herb 1
Pseudognaphalium luteoalbum Jersey cudweed Annual herb  
Ranunculus muricatus Buttercup Annual, Perennial herb  
Ranunculus testiculatus Tubercled crowfoot Annual herb  
Raphanus raphanistrum Jointed charlock Annual, Perennial herb  
Raphanus sativus ! Jointed charlock Annual, Biennial herb  
Rostraria cristata Mediterranean hairgrass Annual grass  
Rumex dentatus Toothed dock Annual, Perennial herb  
Sagina apetala Dwarf pearlwort Annual herb  
Salsola australis Russian thistle Annual herb  
Salsola gobicola Barbwire russian thistle Annual, Perennial herb  
Salsola kali ssp. pontica Russian thistle Annual herb  
Salsola tragus ! Russian thistle Annual herb  
Scabiosa atropurpurea ! Pincushions Annual herb 3
Schismus arabicus ! Arabian schismus Annual grass  
Secale cereale Rye Annual grass 3
Senecio sylvaticus Woodland groundsel Annual herb  
Senecio vulgaris Common groundsel Annual herb  
Setaria pumila Yellow bristlegrass Annual grass  
Sherardia arvensis Field madder Annual herb  
Silene gallica Common catchfly Annual herb  
Silybum marianum ! Milk thistle Annual, Perennial herb 1
Sinapis alba White mustard Annual herb  
Sinapis arvensis ! Charlock Annual herb  
Sisymbrium altissimum Tumble mustard Annual herb  
Sisymbrium irio ! London rocket Annual herb  
Sisymbrium officinale Hedge mustard Annual herb  
Sisymbrium orientale Indian hedge mustard Annual, Perennial herb  
Solanum rostratum Buffalo berry Annual herb  
Soliva sessilis South american soliva Annual herb  
Sonchus asper Spiny sowthistle Annual herb  
Sonchus asper ssp. asper Sow thistle Annual herb  
Sonchus oleraceus Sow thistle Annual herb  
Sorghum bicolor Sorghum Annual grass 2
Spergularia bocconei Boccone's sand spurry Annual herb  
Spergularia bocconi Boccone's sand spurry Annual herb  
Spergularia media Sand spurry Annual, Perennial herb  
Spergularia rubra Purple sand spurry Annual, Perennial herb  
Stellaria media Chickweed Annual herb 1
Stellaria pallida Pale starwort Annual herb  
Taeniatherum caput-medusae Medusa head Annual grass  
Torilis arvensis ! Field hedge parsley Annual herb  
Torilis arvensis ssp. purpurea Purple field hedge parsley Annual herb  
Torilis nodosa Wild parsley Annual herb  
Tribulus terrestris ! Puncture vine Annual herb  
Trifolium hirtum ! Rose clover Annual herb 6
Trifolium subterraneum Subterranean clover Annual herb  
Urtica urens Annual stinging nettle Annual herb  
Verbena bonariensis ! Purple top vervain Annual, Biennial herb 13
Veronica arvensis Speedwell Annual herb  
Veronica persica Bird's eye speedwell Annual herb  
Vicia sativa Spring vetch Annual herb, Vine  
Vicia sativa ssp. sativa Common vetch Annual herb, Vine  
Vicia villosa Hairy vetch Annual herb, Vine 3
Vicia villosa ssp. varia Smooth vetch Annual herb, Vine 5
Vulpia bromoides Six weeks fescue Annual grass  
Vulpia myuros Rattail fescue Annual grass 3
Vulpia myuros var. hirsuta Fox tail fescue Annual grass 3
Vulpia myuros var. myuros Six weeks fescue Annual grass 2
Xanthium spinosum Spiny cocklebur Annual herb  
  Lifeform: Biennial1 plant
  Lifeform: Perennial111 plants
  Lifeform: Shrub28 plants
  Lifeform: Tree19 plants
 
Pink background indicates a plant is non-native.
! indicates a plant is potentially invasive.
NB: found in Merced 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.