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Montana Field Guide

Montana Field Guides

Norway Maple - Acer platanoides

Non-native Species

Global Rank: GNR
State Rank: SNA

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

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General Description
Monoecious trees to 30 m. Twigs purplish, glabrate. Leaves glandular at first, cordate, 5- or 7-lobed up to 1/2-way to the midvein, 6–20 cm wide, deeply toothed, deep green; petioles with white sap. Inflorescence erect panicles from short, side shoots. Flowers unisexual, yellow; sepals 4–5 mm long; petals 3–5 mm long. Samara 30–55 mm long, the seed 10–15 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
An introduced ornamental escaping in eastern North America, sporadically in the west; native to Europe (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
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
Riparian forest, lawns, gardens; valleys of Missoula Co (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Norway Maple — Acer platanoides.  Montana Field Guide.  .  Retrieved on , from