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Montana Field Guide

Montana Field Guides

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


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

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

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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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX; Welsh 2003 in Fl. N. Amer. Vol. 4).

Summary of Observations Submitted for Montana
Number of Observations: 5

(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 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Prostrate Amaranth — Amaranthus blitoides.  Montana Field Guide.  .  Retrieved on , from