| 词条 | Amaranthus watsonii |
| 释义 |
|genus = Amaranthus |species = watsonii |authority = Standl. |synonyms =
|synonyms_ref = [1] }} Amaranthus watsonii is a species of amaranth known by the common name Watson's amaranth.[2] It is native to the southwestern United States and northern Mexico, where it grows in sandy places such as deserts and beaches, and disturbed areas. It is also known as a rare introduced species in parts of Europe. This is an erect annual herb producing a glandular hairy stem to a maximum height of about a meter. The leaves are generally oval-shaped and up to 8 centimeters long, with a petiole of up to 9 centimeters. The species is dioecious, with male and female individuals producing different types of flowers. The inflorescence is a long spike cluster of flowers interspersed with spiny green glandular bracts. The fruit is a smooth capsule about 2 millimeters long that snaps in half to reveal a small shiny reddish black seed. References1. ^{{cite web|url=http://www.theplantlist.org/tpl/record/kew-2633165|title=The Plant List: A Working List of All Plant Species}} 2. ^{{PLANTS|id=AMWA|taxon=Amaranthus watsonii|accessdate=7 January 2016}} External links
3 : Amaranthus|Flora of the Southwestern United States|Flora of Mexico |
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