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Montana Field Guide

Montana Field Guides

Garden Orache - Atriplex hortensis

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
MNPS Threat Rank:
C-value: 1

External Links

General Description
Monoecious annuals with green to red, glabrous foliage. Stems erect, 50–150 cm. Leaf blades opposite below, the blades lanceolate to broadly ovate, 5–20 cm long with mostly entire margins. Inflorescence of spikes in terminal and axillary panicles. Male flowers with a 5-parted calyx and 5 stamens. Female flowers dimorphic, some bracteate without a calyx, others ebracteate with a 5-parted calyx. Fruit either a horizontal seed surrounded by the calyx or a vertical seed surrounded by swollen, wing-like orbicular pistillate bracts 5–10 mm wide (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
In MT in about half of the western counties and a few in the northeast and Hi Line; native to Eurasia, introduced to much of northern U.S. and southern Canada (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 0

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


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Citation for data on this website:
Garden Orache — Atriplex hortensis.  Montana Field Guide.  .  Retrieved on , from