EcoFloraWeb-KeyPSC 5550/6550 Set 1 Weeds

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Home >> Checklist: PSC 5550/6550 Set 1 Weeds >> Previous version of Key >> Identification Key (new version): PSC 5550/6550 Set 1 Weeds Filter/Display Options Family/Genus Filter: Sort by: Display Common Names Display images Plant habit trees vines / lianas herbaceous grass-like special groups composites legumes spurges dicots monocots longevity annual or biennial perennial sap latex absent (sap clear) latex present Leaves arrangement/phyllotaxy basal alternate opposite blade division all simple deeply lobed or divided some or all fully compound leaf attachment sessile or nearly so leaf stalk (petiole) clearly present winged petiolate sheathing Inflorescence flowering season - upper Midwest spring summer fall plant sexuality monoecious dioecious bisexual flowers Flower principal flower color white or cream purple green yellow orange red pink brown inconspicuous flower type daisy- or dandelion-like bilateral/irregular symmetry radial symmetry 5 petals petals indistinguishable Fruit or Cone mature fruit dehiscence opening along 1-2 seams opening along 3 to many seams does not split open to release seed PSC 5550/6550 Set 1 Weeds Corey V. Ransom and Heather Elwood Species Count: 24 Amaranthaceae Amaranthus retroflexus Chenopodium album Asteraceae Lactuca serriola Senecio vulgaris Sonchus oleraceus Taraxacum officinale Caryophyllaceae Stellaria media Convolvulaceae Convolvulus arvensis Euphorbiaceae Euphorbia maculata Euphorbia myrsinites Fabaceae Medicago lupulina Trifolium repens Geraniaceae Erodium cicutarium Malvaceae Malva neglecta Oxalidaceae Oxalis corniculata Plantaginaceae Plantago lanceolata Plantago major Poaceae Cynodon dactylon Digitaria sanguinalis Panicum capillare Poa annua Polygonaceae Fallopia convolvulus Polygonum aviculare Ulmaceae Ulmus pumila
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