Pigweed (Amaranthaceae) is a biological family of the class Magnoliopsida and order Caryophyllales.
Aerva
Allenrolfea
Arthrocnemum
Beta
Iresine
Blutaparon
Corispermum
Camphorosma
Centrostachys
Achyranthes
Chamissoa
Aphanisma
Celosia
Gossypianthus
Cyathula
Cycloloma
Deeringia
Digera
Dysphania
Enchylaena
Exomis
Extriplex
Salicornia
Gomphrena
Chenopodium
Halimione
Halocnemum
Hermbstaedtia
Holmbergia
Tidestromia
Grayia
Alternanthera
Lithophila
Maireana
Guilleminea
Micromonolepis
Kochia
Nitrophila
Charpentiera
Patellifolia
Pfaffia
Philoxerus
Amaranthus
Polycnemum
Monolepis
Proatriplex
Psilotrichum
Nototrichium
Axyris
Atriplex
Halogeton
Suaeda
Bassia
Froelichia
Spinacia
Stutzia
Suckleya
Sarcocornia
Salsola
Krascheninnikovia
Achatocarpaceae
Anacampserotaceae
Ancistrocladaceae
Asteropeiaceae
Barbeuiaceae
Basellaceae
Cactaceae
Molluginaceae
Didiereaceae
Dioncophyllaceae
Drosophyllaceae
Nyctaginaceae
Frankeniaceae
Gisekiaceae
Halophytaceae
Aizoaceae
Simmondsiaceae
Polygonaceae
Plumbaginaceae
Limeaceae
Lophiocarpaceae
Microteaceae
Montiaceae
Physenaceae
Amaranthaceae
Caryophyllaceae
Nepenthaceae
Phytolaccaceae
Portulacaceae
Rhabdodendraceae
Sarcobataceae
Stegnospermataceae
Droseraceae
Talinaceae
Tamaricaceae