Illinois Natural History Survey - University of Illinois

Fraxinus pennsylvanica
Green ash, Red ash
Taxonomy

Synonyms: Fraxinus lanceolata, Fraxinus pennsylvanica var. subintegerrima, Fraxinus pennsylvanica var. pennsylvanica

Subspecific taxa:

Classification:

  • Magnoliophyta

Other taxonomic & nomenclature sources: USDA Plants;  ITIS;  The Plant List;  IPNI

Images

   
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Species Distribution
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Click map to view & download detailed occurrence records

More about map & occurrence records

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: FLNA;  USDA Plants;  BONAP;  BISON

Collections, Observations & Flowering by Month [?]

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

Collections & Observations by Decade [?]

Species Status

Status/Listing: No Information

Notes:We have not made an effort to separate (Fraxinus pennsylvanica var. subintegerrima) F. lanceota from F. pennsylvanica var. pennsylvanica, or any other varieties as their taxonomic status appears to still be in flux.

Origin: Native

Species Description

General: Dicot-woody, perennial

Roots: primary

Shoots: opposite leaf arrangment; compound, pinnately leaf type; entire leaf margin; Pinnate leaf venation; lanceolate leaf shape

Inflorescence: panicle

Flowers: unisexual, dioecious; incomplete, not petals; green, violet; hypogynous ovary position

Fruit: samara

Physiology: autotrophic; C3 C02 fixation

Reproduction: sexual

Ecology & Natural History

Habitat:

ILPIN Notes: Sometimes species is common. Branchlets and lower surface of leaves are velvety-pubescent; long samaras, flowers are crowded into purplish or greenish clusters; have narrow wings along stalks between leaflets. Causes hayfever. This species and various subintegerrima may be interchangable, so the habitats have been listed for both when only one has been mentioned.

Functional Relationships:

  • Pollinators: wind
  • Dispersal: wind
  • Mycorrhizae:
  • N2 fixation: No

Human Relationships:

  • Edibility [?] :
  • Showy Flowers: low

Wildlife and Livestock Information:

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

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

  • Entire State: 2
  • Chicago Area: 1

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