Illinois Natural History Survey - University of Illinois

Acer negundo
Ash-leaf maple, Box elder
Taxonomy

Synonyms:

Subspecific taxa:

Classification:

Other taxonomic & nomenclature sources: USDA PlantsITISThe Plant ListIPNI

Images

   
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Species Distribution
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County Map Legend
Absent:
Not known from county
Medium confidence:
Medium or unknown confidence;
often old records or unverifiable observations
Medium-high confidence:
Often observations by expert botanists
High confidence:
Often vouchered herbarium records
Planted / introduced:
Native species introduced outside historic range,
or only in planted locations within county (e.g., restorations)
Historic / extirpated:
Only historic records for the species; likely extirpated
(Note that this category is not yet functional)

North American distribution maps for this species: FLNAUSDA PlantsBONAPBISON

Collection & Observation Phenology [?]

J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

Collection & Observation Timeline [?]

Species Status

Status/Listing: No Information

Notes:

Origin: Native

Species Description

General: Dicot-woody, perennial

Roots: primary

Shoots: opposite leaf arrangment; compound, pinnately leaf type; serrate leaf margin; Pinnate leaf venation; linear, oblong, lanceolate leaf shape

Inflorescence: raceme

Flowers: unisexual, dioecious; 5 merous; incomplete, not petals; yellow, green; perigynous ovary position

Fruit: samara

Physiology: autotrophic; C3 C02 fixation

Ecology & Natural History

Habitat: Species is distributed in river banks; roadside ditches.

ILPIN Notes: Terrestrial furbearers (esp. squirrels) eat seeds, flowers, bark, and twigs. Concerning small non-game bird food value, this is good for evening grosbeaks. Seed company numbers: 4, 20, 27, 28. Wagner, W. H., Jr. 1975. Notes on the floral biology of box-elder (Acer negundo). The Michigan Botanist 14: 73-82. Flowers are appearing with the leaves. Plant has staminate flowers in umbel-like fascicles.

Functional Relationships:

  • Pollinators insects (wind)

Human Relationships:

  • Edibility [?] : yes-qualified
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value:
  • Cover Value: small non-game bird: good

Coefficient of Conservatism (C-value) [?] :

  • Entire State: 1
  • Chicago Area: 0

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