Illinois Natural History Survey - University of Illinois

Juglans cinerea
White walnut
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 [?]

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F
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M
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A
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M
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J
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J
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A
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S
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O
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N
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D
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Collection & Observation Timeline [?]

Species Status

Status/Listing: Regional Forester Sensitive Species

Notes:

Origin: Native

Species Description

General: Dicot-woody, perennial

Roots: primary

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

Inflorescence: spike, catkin

Flowers: unisexual, monoecious; incomplete, not petals; perigynous ovary position

Fruit: nut

Physiology: autotrophic; C3 C02 fixation

Ecology & Natural History

Habitat:

ILPIN Notes: Nuts are edible; pickles can be made from the young fruits. Inner bark has mild cathartic properties and was used as a yellow or orange dye. Pistillate flowers are in spikes and perigynous; white, hairy, soft buds; large, oblong fruits; viscid-hairy rachis. Terrestrial furbearers (especially tree squirrela) eat nuts as food. Regarding aquatic species food value, this pertains to aquatic furbearers. Form - whips, seeds, balled and burlapped, seedlings. Wood is light, soft, weak, and close grained. Seed company numbers: 2, 13, 14, 19, 27, 28, 29.

Functional Relationships:

Human Relationships:

  • Edibility [?] : yes
  • Showy Flowers:

Wildlife and Livestock Information:

  • Food Value: small non-game bird: good; small mammals: good; aquatic species: good
  • Cover Value: small non-game bird: good

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

  • Entire State: 7
  • Chicago Area: 8

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