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CEGL005857 Heracleum maximum Wet Meadow

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Common Cow-parsnip Wet Meadow

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This is a lush forb meadow type of the Northern Rockies, in northwestern Montana and southern Alberta. Stands of this herbaceous vegetation are found on moderately sloped to flat benches, valley floors, and colluvial slopes, predominately on glacial deposits, with southeast aspects between 1671 to 1700 m (5480-5574 feet) elevation. Soils are moderately drained to well-drained silt or clay loams, and the ground surface is mostly litter and duff. This lush herbaceous association consists of a wide diversity of graminoids and forbs. Occasionally a few scattered shrubs are present with up to 10% combined cover, including Spiraea betulifolia, Amelanchier alnifolia, Dasiphora fruticosa ssp. floribunda, and Symphoricarpos occidentalis. There is a wide variety of tall forbs including Heracleum maximum, which, while not present nor dominant in all stands, is the indicator species for this wet association. Forbs consistently present are Osmorhiza occidentalis, Thalictrum occidentale, Potentilla gracilis, Fragaria virginiana, Achillea millefolium, and Valeriana sitchensis with 2-20% cover. Graminoids present consist of Bromus carinatus, Carex hoodii, and Carex geyeri.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This type from Glacier National Park is very similar to the other Heracleum maximum associations in the USNVC. Further comparison of stand tables and environmental settings is needed, but without additional inventory and compositional data, it will be difficult to determine if these represent variations of one association, or are best kept as distinct types.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This forb meadow type occurs in the Northern Rockies, in northwestern Montana and southern Alberta.

Nations: CA,US

States/Provinces:  AB, MT, WA?




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3G4

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? Heracleum maximum Herbaceous Vegetation (Crawford et al. 2009)
= Heracleum maximum Herbaceous Vegetation (Hop et al. 2007)

Concept Author(s): Hop et al. (2007)

Author of Description: Western Ecology Group

Acknowledgements: No Data Available

Version Date: 01-12-04

  • ANHIC [Alberta Natural Heritage Information Centre]. 2018. Community database files. Alberta Natural Heritage Information Centre, Parks and Protected Areas Division, Alberta Community Development, Edmonton.
  • Crawford, R. C., C. B. Chappell, C. C. Thompson, and F. J. Rocchio. 2009. Vegetation classification of Mount Rainier, North Cascades, and Olympic national parks. Plant association descriptions and identification keys: Appendices A-G. Natural Resource Technical Report NPS/NCCN/NRTR--2009/D-586. National Park Service, Fort Collins, CO. 586 pp.
  • Hop, K., M. Reid, J. Dieck, S. Lubinski, and S. Cooper. 2007. U.S. Geological Survey-National Park Service Vegetation Mapping Program: Waterton-Glacier International Peace Park. U.S. Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, WI. 131 pp. plus Appendices A-L.
  • Reid, M. S., S. V. Cooper, and G. Kittel. 2004. Vegetation classification of Waterton-Glacier International Peace Park. Final report for USGS-NPS Vegetation Mapping Program, International Peace Park Mapping Project. NatureServe, Arlington VA.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.