Fraxinus profunda
Pumpkin ash

Key Characteristics

Large tree of southern swamps; base of trunk often swollen (buttressed); leaves compound with 7-9 stalked elliptic leaflets; leaves and rachis densely hairy; fruit a large winged samara (4-7 cm long and 7-10 mm broad).

Status and Rank

  • State Status: T
  • State Rank: S2
  • Global Rank: G4


County NameNumber of OccurrencesYear Last Observed
Distribution map for Fraxinus profunda

Updated 5/15/2018. Information is summarized from MNFI's database of rare species and community occurrences. Data may not reflect true distribution since much of the state has not been thoroughly surveyed.


Found in floodplain forests in southern Lower Michigan, usually in lower bottoms. Also found in deciduous swamps.

Natural Community Types


For each species, lists of natural communities were derived from review of the nearly 6,500 element occurrences in the MNFI database, in addition to herbarium label data for some taxa. In most cases, at least one specimen record exists for each listed natural community. For certain taxa, especially poorly collected or extirpated species of prairie and savanna habitats, natural community lists were derived from inferences from collection sites and habitat preferences in immediately adjacent states (particularly Indiana and Illinois). Natural communities are not listed for those species documented only from altered or ruderal habitats in Michigan, especially for taxa that occur in a variety of habitats outside of the state.

Natural communities are not listed in order of frequency of occurrence, but are rather derived from the full set of natural communities, organized by Ecological Group. In many cases, the general habitat descriptions should provide greater clarity and direction to the surveyor. In future versions of the Rare Species Explorer, we hope to incorporate natural community fidelity ranks for each taxon.

Associated Plants

Red maple, silver maple, sycamore, eastern cottonwood, swamp white oak, bur oak, red ash, black ash, buttonbush, spicebush, green dragon, and wood nettle.


Relatively little known of biology and ecology of this species in Michigan. It may be impacted by excessive logging and changes in hydrology, in addition to habitat degradation via exotic species invasion. This species is also highly threatened by the emerald ash borer, which has the potential to kill every individual in the state. If sustainable colonies of trees still persist, it may be worth collecting and preserving seeds and treating still-living specimens with insecticides to prevent mortality.

General Survey Guidelines

Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator.

Survey Methods

Page Citation

Michigan Natural Features Inventory. 2007. Rare Species Explorer (Web Application). Available online at [Accessed Sep 24, 2018]

More Information

See MNFI Species Abstract


Survey References

Technical References

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