Amaranthaceae, Amaranth or Pigweed Family
Includes the Chenopodiaceae
According to The Plant List there are 178 plant genera and 2,052 accepted species names. In North America there are 57 genera and 546 accepted taxa overall
Amaranthaceae or the Amaranth Family consists of annual or perennial herbs or subshrubs often in alkaline or salt heavy habitats. They have primitive or simple reproductive characteristics, perianth 1 to 5 tepals often joined. fruits capsule (circumscissile). Leaves are simple, mostly alternate and some almost vestigial reduced to small scales. They are mostly without large showy flowers and elaborate fruits with advanced strategies for seed dispersal.
Amaranthaceae now include the Chenopodiaceae or Goosefoot Family as they share many of the same characteristics.
Amaranths have few economically important species but some are significant such as spinach and chard both of which provide substantial amounts of protein. Other notable species are major weeds in North America. Many members of the family are weedy and thrive in hot dry desert habitats such as those found in the southwestern part of the United States.
- Alternanthera caracasana, Khaki Weed
- Alternanthera pungens, Khakiweed
- Amaranthus albus, Prostrate Pigweed
- Amaranthus blitoides, Mat Amaranth (12/28/2019)
- Amaranthus fimbriatus, Fringed Amaranth
- Amaranthus palmeri, Carelessweed
- Enchylaena tomentosa, Ruby-Saltbush (12/24/2019)
- Guilleminea densa, Small Matweed
- Gomphrena caespitosa, Tufted Globe Amaranth
- Gomphrena nitida, Pearly Globe Amaranth
- Gomphrena sonorae, Sonoran Globe Amaranth
- Tidestromia lanuginosa, Woolly Tidestromia