Home >> Checklist: PSC 5550/6550 All Weeds >> Previous version of Key >> Identification Key (new version): PSC 5550/6550 All Weeds
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Plant
habit
trees
shrubs
vines / lianas
herbaceous
grass-like
ferns & allies
aquatic & OBL wetland species
special groups
composites
legumes
milkweeds
spurges
dicots
monocots
longevity
annual or biennial
perennial
armature
unarmed
armed
sap
latex absent (sap clear)
latex present
reproductive mode
produces flowers, fruits, seeds
produces spores
leaves/twigs aromatic when crushed
without marked odor
clearly odiferous
Leaves
arrangement/phyllotaxy
basal
alternate
opposite
whorled
fascicled/clustered along stem
blade division
all simple
deeply lobed or divided
some or all fully compound
leaf (blade) presence
leaf blades present
no leaves apparent
Flower
principal flower color
white or cream
purple
blue
green
yellow
orange
red
pink
brown
inconspicuous
flower type
daisy- or dandelion-like
bilateral/irregular symmetry
radial symmetry 3 petals
radial symmetry 4 petals
radial symmetry 5 petals
radial sym. 6 or more petals
petals indistinguishable
ovaries/pistils per flower
1
2-5
more than 5
Fruit or Cone
fruit consistency at maturity
dry/leathery
fleshy
Corey V. Ransom and Heather Elwood
Species Count: 99
Amaranthaceae
Amaranthus blitoides
Amaranthus retroflexus
Bassia scoparia
Chenopodium album
Halogeton glomeratus
Salsola tragus
Anacardiaceae
Toxicodendron rydbergii
Apiaceae
Conium maculatum
Apocynaceae
Asclepias speciosa
Asteraceae
Acroptilon repens
Ambrosia artemisiifolia
Arctium minus
Artemisia tridentata
Carduus nutans
Centaurea diffusa
Centaurea solstitialis
Centaurea stoebe
Centaurea virgata
Cirsium arvense
Cirsium vulgare
Cyclachaena xanthiifolia
Ericameria nauseosa
Grindelia squarrosa
Gutierrezia sarothrae
Helianthus annuus
Lactuca serriola
Leucanthemum vulgare
Onopordum acanthium
Senecio vulgaris
Sonchus oleraceus
Taraxacum officinale
Tragopogon dubius
Xanthium strumarium
Boraginaceae
Cynoglossum officinale
Brassicaceae
Brassica nigra
Capsella bursa-pastoris
Isatis tinctoria
Lepidium draba
Lepidium latifolium
Thlaspi arvense
Caprifoliaceae
Dipsacus fullonum
Caryophyllaceae
Stellaria media
Convolvulaceae
Convolvulus arvensis
Cuscuta pentagona
Elaeagnaceae
Elaeagnus angustifolia
Equisetaceae
Equisetum laevigatum
Euphorbiaceae
Euphorbia dentata
Euphorbia esula
Euphorbia maculata
Euphorbia myrsinites
Fabaceae
Galega officinalis
Medicago lupulina
Melilotus officinalis
Trifolium repens
Geraniaceae
Erodium cicutarium
Hypericaceae
Hypericum perforatum
Lythraceae
Lythrum salicaria
Malvaceae
Abutilon theophrasti
Malva neglecta
Onagraceae
Epilobium brachycarpum
Oxalidaceae
Oxalis corniculata
Plantaginaceae
Linaria dalmatica
Linaria vulgaris
Plantago lanceolata
Plantago major
Poaceae
Aegilops cylindrica
Avena fatua
Bromus tectorum
Cenchrus longispinus
Cynodon dactylon
Digitaria sanguinalis
Echinochloa crus-galli
Elymus repens
Hordeum jubatum
Panicum capillare
Panicum miliaceum
Phragmites australis
Poa annua
Poa bulbosa
Secale cereale
Setaria viridis
Sorghum halepense
Taeniatherum caput-medusae
Polygonaceae
Fallopia convolvulus
Polygonum aviculare
Rumex crispus
Ranunculaceae
Ceratocephala testiculata
Rosaceae
Potentilla recta
Rubiaceae
Galium aparine
Scrophulariaceae
Verbascum thapsus
Solanaceae
Hyoscyamus niger
Physalis virginiana
Solanum dulcamara
Solanum physalifolium
Tamaricaceae
Tamarix chinensis
Typhaceae
Typha latifolia
Ulmaceae
Ulmus pumila
Urticaceae
Urtica dioica
Zygophyllaceae
Tribulus terrestris