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Montana Field Guides

Green Ash - Fraxinus pennsylvanica

Native Species

Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links






 
General Description
Dioecious tree to 12 m with an open crown and spreading branches. Bark dark gray, shallowly furrowed; twigs green to brown. Leaves opposite, petiolate, ovate in outline, odd-pinnate with 5 to 7 leaflets; leaflets short-petiolate, lanceolate, serrate, 5–12 cm long, mostly glabrous. Inflorescence a panicle, appearing before the leaves. Flowers unisexual; calyx 1–1.5 mm long, cup-like with 4 shallow lobes; corolla absent; male flowers with 2 stamens, 2–4 mm long; female flowers with 2 aborted stamens and 1 pistil; ovary superior; stigma 2-lobed. Fruit a 1-seeded oblong, flattened, distally-winged samara, 2–4 cm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range

Year-round
 


Range Comments
MT to QC south to TX, LA and FL (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 360

(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
Along rivers, streams, ephemeral drainages, cool north-facing slopes; plains(Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Predicted Suitable Habitat Model

This species has a Predicted Suitable Habitat Model available.

To learn how these Models were created see http://mtnhp.org/models

Ecological Systems Associated with this Species

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P. and C. Marlow. 2013. Green Ash Woodlands, A Review. Research Bulletin No. 4601. Montana State University Extension. Bozeman, MT. 19 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
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    • Althen, Craig. 2019. Submitted plant photographs and associated observation data. Spreadsheets of observation data and photographs provided electronically from May through December. Submitted to Andrea Pipp, MTNHP Botanist, Helena, Montana.
    • Baril, S.F. 1977. Benthic invertebrate distribution, abundance, and diversity in Rosebud Creek, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 97 p.
    • Brammer, J.A. 1991. The effects of supersaturation of dissolved gases on aquatic invertebrates of the Bighorn River downstream of Yellowtail Afterbay Dam. M. Sc. Thesis. Bozeman, MT: Montana State University. 132 p.
    • Egan, J.L. 1957. Some relationships between mule deer and alfalfa production in Powder River County, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 34 p.
    • Fritzen, D.E. 1995. Ecology and behavior of Mule Deer on the Rosebud Coal Mine, Montana. Ph.D. Dissertation. Bozeman, MT: Montana State University. 143 p.
    • Gobeille, J.E. 1992. The effect of fire on Merriams turkey brood habitat in southeastern Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 61 p.
    • Hale, K.M. 2007. Investigations of the West Nile virus transmission cycle at Medicine Lake National Wildlife Refuge, Montana, 2005-2006. M.Sc. Thesis. Bozeman, MT: Montana State University. 74 p.
    • Little, E.L., Jr. 1979. Checklist of United States trees (native and naturalized). Agriculture Handbook No. 541. U.S. Forest Service, Washington, D.C. 375 pp.
    • Pipp, Andrea. 2014. Spreadsheet of Data from Wetland Mitigation Bank Monitoring at SW Property, Rosebud County.
    • Pipp, Andrea. 2014. Data on spreadsheet from Wetland Mitigation Bank Monitoring at Ringling Ranch, Carter County.
    • Pipp, Andrea. 2014. Field Notes from Wetland Mitigation Bank Monitoring at Cole Property, Treasure County.
    • Pipp, Andrea. 2014. Field Notes from Wetland Mitigation Bank Monitoring at Ringling Ranch, Carter County.
    • Pipp, Andrea. 2014. Field Notes from Wetland Mitigation Bank Monitoring at SW Property, Rosebud County.
    • Pipp, Andrea. 2014. Spreadsheet of plant data at the Cole Property Wetland Mitigation Site, Treasure County.
    • Rauscher, R.L. 1995. Deer use of irrigated alfalfa along the Yellowstone River, Custer County, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 50 p.
    • Selting, J.P. 1994. Seasonal use of agricultural lands by Mule Deer, White-Tailed Deer, and Pronghorn Antelope in Carter County, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 66 p.
  • Web Search Engines for Articles on "Green Ash"
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Citation for data on this website:
Green Ash — Fraxinus pennsylvanica.  Montana Field Guide.  .  Retrieved on , from