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Montana Field Guide

Montana Field Guides

Roughfruit Amaranth - Amaranthus tuberculatus
Other Names:  Rough-fruited Water-hemp, Tall Amaranth, Tall Water-hemp, Amaranthus tamariscina

Non-native Species

Global Rank: G4G5
State Rank: SNA

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

External Links






 
General Description
Dioecious. Stems erect, 20–80 cm with glabrous foliage. Leaf blade lanceolate to ovate, 2–7 cm long, longer than petiole. Inflorescences narrow, open, axillary spikes and panicles; bracts ovate 1–2 mm long, mucronate. Flowers: sepals 0 to 5, lanceolate, 2–3 mm long; stamens 5. Utricle ca. 1.5 mm, shorter than sepals (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Known in MT only from Missoula County; most of temperate North America and introduced in Europe (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

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