Amaranthaceae

(am-r-an-THAY-see-ee)
– a family in the Caryophyllales order –

Here in the St. Louis Area, we have 17 not-too-obscure plants that are in the “Amaranth” family:

• Amaranthus albus  (Tumble Pigweed) [CC0]
• Amaranthus hybridus  (Smooth Pigweed) [CC0]
• Amaranthus retroflexis  (Redroot Pigweed) [intro]
• Amaranthus spinosus  (Spiny Pigweed) [intro]
• Amaranthus tuberculatus  (Roughfruit Amaranth) [CC0]

• Bassia scoparia  (Burningbush) [intro]
• Chenopodiastrum simplex  (Mapleleaf Goosefoot) [CC2]

• Chenopodium album  (Lamb’s Quarters) [intro]
• Chenopodium berlandieri  (Pitseed Goosefoot) [CC1]
• Chenopodium pallescens  (Slimleaf Goosefoot) [CC2]
• Chenopodium standleyanum  (Standley’s Goosefoot) [CC3]

• Cycloloma atriplicifolium  (Winged Pigweed) [CC4]
• Dysphania ambrosioides  (Mexican Tea) [intro]
  
• Froelichia floridana  (Cottonweed) [CC4] [intro]
• Froelichia gracilis  (Slender Cottonweed) [CC3]
  
• Iresine rhizomatosa  (Juda’s Bush) [CC5]
• Salsola tragus  (Prickly Russian Thistle) [intro]

[CC] = Coefficient of Conservatism