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Montana Field Guide

Montana Field Guides

Halberd-leaf Orache - Atriplex patula
Other Names:  Atriplex hastata


Global Rank: G5
State Rank: SU

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 0

External Links






 
General Description
Monoecious or dioecious annual, farinose to glabrous. Stems erect to ascending, 20–100 cm. Leaf blades glabrate, up to 10 cm long, narrowly lanceolate to ovate-hastate with entire to deeply dentate margins. Inflorescence axillary and terminal, interrupted spikes of glomerules. Male flowers mostly 5-parted. Female flowers with a calyx, the pistillate bracts nearly separate. Mature pistillate bracts swollen, deltoid, 3–6 mm long with entire to dentate margins and rarely tuberculate faces (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Across much of MT; across much of N. America excluding most of Southwest and Deep South (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: 4

(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

References
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Citation for data on this website:
Halberd-leaf Orache — Atriplex patula.  Montana Field Guide.  .  Retrieved on , from