Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Prostrate Amaranth - Amaranthus blitoides
Other Names:  Amaranthus graecizans [misapplied]

Native Species

Global Rank: GNR
State Rank: SU
(see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 2

External Links






State Rank Reason (see State Rank above)
Native to parts of North America, may be introduced into Montana.
 
General Description
Monoecious. Stems branched at the base, prostrate to ascending, 5–50 cm with glabrous to pubescent foliage. Leaf blade obovate, 10–25 mm long, mostly longer than the petiole. Inflorescence axillary glomerules; bracts broadly lanceolate, 2–3 mm long with a spine tip. Flowers: sepals 3 to 5, narrowly ovate, acuminate, 2–3 mm long; stamens 3. Utricle 2–3 mm, as long as sepals; seed ca. 1.3 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range

Year-round
 


Range Comments
Across most of MT; native to the West but throughout North America, also completely naturalized in parts of South Amererica, Eurasia, and other regions (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX; Welsh 2003 in Fl. N. Amer. Vol. 4).

Observations in Montana Natural Heritage Program Database
Number of Observations: 19

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Disturbed soil of fields, roadsides, margins of streams, ponds; plains, valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Adhikari, S. 2018. Impacts of dryland farming systems on biodiversity, plant-insect interactions, and ecosystem services. Ph.D. Dissertation. Bozeman, MT: Montana State University. 207 p.
    • Eggers, M.J.S. 2005. Riparian vegetation of the Montana Yellowstone and cattle grazing impacts thereon. M.Sc. Thesis. Montana State University, Bozeman, MT. 125 p.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Quire, R.L. 2013. The sagebrush steppe of Montana and southeastern Idaho shows evidence of high native plant diversity, stability, and resistance to the detrimental effects of nonnative plant species. M.Sc. Thesis. Bozeman, MT: Montana State University. 124 p.
    • Seipel, T.F. 2006. Plant species diversity in the sagebrush steppe of Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 87 p.
    • Sirirugsa, P. 1973. Descriptive analysis of Montana species of Amaranthus. M.Sc. Thesis. Bozeman, MT: Montana State University. 56 p.
    • Skilbred, Chester L. 1979. Plant succession on five naturally revegetated strip-mined deposits at Colstrip, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 128 pp.
  • Web Search Engines for Articles on "Prostrate Amaranth"
Login Logout
Citation for data on this website:
Prostrate Amaranth — Amaranthus blitoides.  Montana Field Guide.  .  Retrieved on , from