Amaranthus wrightii

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales

Familia: Amaranthaceae s.l.
Cladus: Amaranthaceae s.str.
Subfamilia: Amaranthoideae
Genus: Amaranthus
Species: Amaranthus wrightii
Name

Amaranthus wrightii S.Watson, Proc. Amer. Acad. Arts 12: 275. (1877), as "Amarantus (Euamarantus) Wrightii"

Lectotype (designated by N.D. Bayon 2015): United States, New Mexico, Grant: On the upper Rio Grande and Gila. Copper Mines. 1851-10-11, Charles (Carlos) Wright #1748. Lectotype: GH GH00037019; Isolectotypes: GH00037004,K K000190110, K000190111, US US00106269.

Distribution
Native distribution areas:

Northern America
Northwestern U.S.A.
Colorado
Southwestern U.S.A.
Arizona, Utah
South-Central U.S.A.
New Mexico, Texas

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Watson, S. 1877. Descriptions of new species of plants, with revisions of certain genera. Proceedings of the American Academy of Arts and Sciences 12: 246–278. BHL Reference page. : 275

Additional references

eFloras 2008. Amaranthus wrightii in Flora of North America . Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Links

Govaerts, R. et al. 2019. Amaranthus wrightii in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2019 Sept. 10. Reference page.
Hassler, M. 2019. Amaranthus wrightii. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2019. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2019 Sept. 10. Reference page.
International Plant Names Index. 2019. Amaranthus wrightii. Published online. Accessed: Sept. 10 2019.
Tropicos.org 2019. Amaranthus wrightii. Missouri Botanical Garden. Published online. Accessed: 10 Sept. 2019.
USDA, ARS, Germplasm Resources Information Network. Amaranthus wrightii in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 2019 Sept. 10.

Vernacular names
English: Wright's amaranth

Amaranthus wrightii is a species of flowering plant. It goes by the common name of Wright's amaranth. It occurs from western Texas into southern Arizona and as far north as Colorado at elevations between 500–2,000 m (1,600–6,600 ft).[1]
Description

Amaranthus wrightii is a mostly glabrous plant growing 0.2–1 m (7.9 in – 3 ft 3.4 in) tall. The erect or ascending stems are tinged with white or red. The rhombic-ovate to lanceolate leaves are 1.5–6 cm (0.59–2.36 in) long and 0.5–3 cm (0.20–1.18 in) wide, with petioles slightly shorter than the leaves. The base of the leaves are acute, the leaf margins are entire, and the apex of the leaves are obtuse. The terminal and axillary inflorescences are short and thick, and reddish-green. The linear-lanceolate bracts are twice as long as the tepals. The pistillate flowers have five tepals and are 1.5–2 mm (0.059–0.079 in) wide. The staminate flowers also have five tepals and grow at the tips of inflorescences. The utricles are 1.3–2 mm (0.051–0.079 in) wide. The dark reddish to black seeds are 1 mm (0.039 in) wide and lenticular.[2]

The plant flowers from summer into fall.[2]
References

Contributions from the United States National Herbarium. Vol. 19. Smithsonian Institution Press. 1915. p. 212.
Flora of North America Editorial Committee (ed.). "Amaranthus wrightii". Flora of North America North of Mexico (FNA). New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.