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Powell's amaranth
Scientific Name: Amaranthus powellii ssp. powellii
Family: Amaranthaceae
Category: Dicot
Growth: Forb/herb
Duration: Annual
Other Names:
Powell's Amaranth (Amaranthus powellii)
Amaranthus powellii, commonly known as Powell's amaranth or green amaranth, is an annual plant belonging to the Amaranthaceae family.
Considerations for Pets
- The plant is sometimes referred to as spiny amaranth although this may be referring to a different species.
- The plant produces small seeds.
Taxonomy and Nomenclature
- Scientific Name: Amaranthus powellii S. Watson
- Family: Amaranthaceae (Amaranth family)
- Synonyms and Subspecies:
- Amaranthus viscidulus (mentioned in the text)
- Amaranthus retroflexus var. powellii (S. Watson) B.
- Amaranthus powellii S. Watson ssp. bouchonii (Thell.) Costea & Carretero
- Amaranthus hybridus ssp. powellii (mentioned in image descriptions)
- Amaranthus bracteosus Uline & W. L. Bray
Common Names
- Powell's Amaranth
- Green Amaranth
- Powell's Smooth Amaranth
- Amaranthus Pigweed (sometimes used in Tasmania)
- Prince of Wales Feather (sometimes used in Tasmania and WA)
Distribution and Habitat
- Native to southwestern North America.
- Now found throughout North America and South America.
- The text also mentions it being recorded in Britain.
- Can be found in disturbed habitats, such as parking lots (mentioned in the context of flowering and allergies).
Ecological Role
- Considered a serious cropland weed, particularly in relation to other amaranths like redroot pigweed and smooth pigweed.
- Palmer amaranth is identified as a species of pigweed recently introduced into Pennsylvania and difficult to distinguish.
Morphological Characteristics
- Annual plant growing up to 1.8 meters (6 feet) tall.
- Leaves are shiny, entire, and lack hairs.
- Lower stem, particularly of seedlings, exhibits certain characteristics (details not provided in the text).
- Several-stemmed at the base, much-branched, decumbent, spreading.
Additional Information
- Flowers are monoecious (individual flowers are either male or female on the same plant).
- The edible leaves and seeds are sometimes gathered.
Further Information
- Brooklyn Botanic Garden New York Metropolitan Flora Project (NYMF)
- Dave's Garden