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Montana Field Guide

Montana Field Guides

White Amaranth - Amaranthus albus


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

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

External Links






State Rank Reason (see State Rank above)
Though likely native to Montana, this species occurs in disturbed sites and is generally "weedy".
 
General Description
Monoecious. Stems erect, 10–75 cm with glabrous to pubescent foliage, branched at the base, becoming a tumbleweed. Leaf blade 1–3 cm long, longer than the petiole, obovate with a minute spine tip. Inflorescences axillary glomerules; bracts lanceolate and long attenuate, spine-tipped, 2–3 mm long. Flowers: sepals 3, narrowly lanceolate, acute, 1–2 mm long; stamens 3. Utricle 1–2 mm, as long or longer than sepals; seed <1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Scattered across much of MT; throughout North America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 7

(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
Cultivated fields, disturbed pastures, roadsides, streambanks; 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:
White Amaranth — Amaranthus albus.  Montana Field Guide.  .  Retrieved on , from