Occurrence ID (GUID):
Muhlenbergia mexicana L.
Rachel Hackett & Hillary Karbowski RHHK972
United States, Michigan, Washtenaw, Park Lyndon Fen
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 central portion of main fen section, 75m east of lake, 25m northeast of Larix laricina and Eleocharis mat area. In a thicket of Betula pumila with some Salix and Cornus. Carex and Poaceae dominant with some Asteraceae. Typha latifolia also common. Ground hummocky with standing water between hummocks. Water orange colored-tannins.
Inflorescence - spikes of florets, 2-3cm long spike, less than 4mm wide. Florets purple tinged, short awned.Population - slightly clumped on hummocks, flowering, Growing with Muhlenbergia glomerata, Symphyotrichum boreale, and Carex prairea.
Record Id: f4190602-ed8b-4458-8838-ddb8eb994796