| Rike | Planteriket (Plantae) |
| Uekte gruppe | | Karplanter (Tracheophytes) |
| Overrekke | | | Frøplanter (Spermatophyte) |
| Rekke | | | | Dekkfrøete blomsterplanter (Magnoliophyta) |
| Underklasse | | | | | Tofrøblader (Magnoliidae) |
| Familie | | | | | | Amarantfamilien (Amaranthaceae) |
| Slekt | | | | | | | Ugrasmeldeslekta (Chenopodium) |
| Art | | | | | | | | Afrikamelde (Chenopodium schraderianum) |
| Art | | | | | | | | Amerikahjertemelde (Chenopodium simplex) |
| Art | | | | | | | | Amerikamelde (Chenopodium pratericola) |
| Art | | | | | | | | Argentinamelde (Chenopodium borbasioides) |
| Art | | | | | | | | Asiamelde (Chenopodium karoi) |
| Art | | | | | | | | Blåmelde (Chenopodium glaucum) |
| Art | | | | | | | | Bukkemelde (Chenopodium hircinum) |
| Art | | | | | | | | Bymelde (Chenopodium urbicum) |
| Art | | | | | | | | Bærmelde (Chenopodium foliosum) |
| Art | | | | | | | | Dvergmelde (Chenopodium pumilio) |
| Art | | | | | | | | Eikemelde (Chenopodium botrys) |
| Art | | | | | | | | Fikenmelde (Chenopodium ficifolium) |
| Art | | | | | | | | Frømelde (Chenopodium polyspermum) |
| Art | | | | | | | | Gatemelde (Chenopodium murale) |
| Art | | | | | | | | Greinmelde (Chenopodium virgatum) |
| Art | | | | | | | | Hjertemelde (Chenopodium hybridum) |
| Art | | | | | | | | Hønsemelde (Chenopodium missouriense) |
| Art | | | | | | | | Indiamelde (Chenopodium strictum) |
| Art | | | | | | | | Jordbærmelde (Chenopodium capitatum) |
| Art | | | | | | | | Kjempemelde (Chenopodium giganteum) |
| Art | | | | | | | | Meldestokk (Chenopodium album) |
| Art | | | | | | | | Møllemelde (Chenopodium probstii) |
| Art | | | | | | | | Ormemelde (Chenopodium anthelminticum) |
| Art | | | | | | | | Rødmelde (Chenopodium rubrum) |
| Art | | | | | | | | Sildemelde (Chenopodium vulvaria) |
| Art | | | | | | | | Sitronmelde (Chenopodium ambrosioides) |
| Art | | | | | | | | Skaftblåmelde (Chenopodium salinum) |
| Art | | | | | | | | Småmelde (Chenopodium opulifolium) |
| Art | | | | | | | | Stolt henrik (Chenopodium bonus-henricus) |
| Art | | | | | | | | Stripemelde (Chenopodium striatiforme) |
| Art | | | | | | | | Svenskemelde (Chenopodium suecicum) |
| Art | | | | | | | | Texasmelde (Chenopodium berlandieri) |
| Art | | | | | | | | Ullmelde (Chenopodium multifidum) |