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Montana Field Guide

Montana Field Guides

Dock-leaf Smartweed - Polygonum lapathifolium
Other Names:  Persicaria lapathifolia


Global Rank: G5
State Rank: SU

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

External Links






 
General Description
Sparsely puberulent annual. Stems erect to ascending, branched, 10–80 cm. Leaves short-petiolate; the blades lanceolate, 2–10 cm long; stipules brown, 4–20 mm long, papery. Flowers 2–3 mm long, in sparsely glandular, narrow racemes from upper leaf axils; pedicels 0.5–2 mm long, ascending; tepals usually 4, greenish white to rose with 3 anchor-shaped veins. Achene flattened, 2–3 mm long, shiny dark brown (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Cosmopolitan, throughout N. America (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 14

(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
Mud or shallow water along streams, ponds; plains, valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Dock-leaf Smartweed — Polygonum lapathifolium.  Montana Field Guide.  .  Retrieved on , from