Central Michigan University Herbarium
Catalog #: CMC00018957
Occurrence ID (GUID): e74ca689-2d6e-4971-9504-1bb1bbad7d31
Taxon: Rumex orbiculatus A. Gray
Family: Polygonaceae
Collector: Rachel Hackett & Hillary Karbowski   RHHK873   
Date: 2013-06-25
Locality: United States, Michigan, Washtenaw, Park Lyndon Fen
42.3811  -84.06626
Elevation: 279 meters (915ft)
Habitat: Prairie fen complex on state and county land. Several small lakes and a man-made channel runs through it. The main complex is mostly sedge meadow and peat mounded seep. There is some encroachment by shrubs, trees, and a few invasives (Phragmites, Phalaris arundinacea, Rosa multiflora, Typha angustifolia, T. x glauca). There are also large colonies of Typha latifolia intermittant. Prairie fen dominated by Carex, Poaceae, and Asteraceae such as C. sterilis, C. bumbauxii, C. stricta, Solidago ohioensis, S. rugosa, S. uliginosa, S. altissima, Sorghastrum nutans, Schizachyrium scoparium, and Bromus ciliatus. Other prominent species include Dasiphora fruticosa, Toxicodendron vernix, Valeriana uliginosa, Apocynum cannabinum, and Thelypteris palustris. Some past management of woody cutting, invasive spraying, and burns. Evidense of recent burn in western patches. In southwestern leg of main fen complex, 200m northwest of house, 50m east of western border. On very bouncy peat mat with many streams. Area dominated by Poaceae, Carex with some Solidago patula. Shrubs common, mostly Cornus and spice bush. Many dead trees (ash) and several tall Larix laricina. Standing water in quadrat. Can hear N Territorial Road.
Description: Population - common, 1-2 per 1m2 area, usually with Symplocarpus foetidus in standing water, wavy leaf margins.
Specimen Images
Record ID: e74ca689-2d6e-4971-9504-1bb1bbad7d31
For additional information on this specimen, please contact: Anna Monfils, Director (monfi1ak@cmich.edu)
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