Marilyn J. Morris, Loy R. Phillippe, & Scott Simon
901
1991-07-16
1991-07-16
United States, Illinois, Vermilion, Collison Marsh, 1 mile northeast of Collison. Located within Middle Fork Fish and Wildlife Area. Collison 7.5 minute quad.
T. 21N, R. 13W, SE1/4 NW1/4 Sect. 35
Marsh fed by Collison Seep. Associates include Acorus calamus, Carex lacustris, C. stricta, Impatiens capensis, and Typha latifolia.