Small forb (20-30 cm) of riverbanks; leaves opposite, sessile, and lanceolate; flowers with 5 white notched, rounded petals, sepals pubescent, subtented by two large bracts nearly as large as the upper cauline leaves.
Status and Rank
- State Status: T
- State Rank: SNR
- Global Rank: G4?
|County Name||Number of Occurrences||Year Last Observed|
This species was only recently found in Michigan, occuring in an open sandy meadow on the depositional bank of a river.
Natural Community Types
Joe-pye-weed, American vetch, grass-leaved goldrenrod, white cockle, lamb's quarters, angelica, boxelder, thicket creeper, and sandbar willow.
This species likely requires relatively open habitat dominated by herbaceous species. Maintainence of riverine hydrology with periodic flooding events is cruicial.
General Survey Guidelines
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.
- Meander search
Survey Period: From first week of July to fourth week of September
- Elzinga, C.L., D.W. Salzer, and J.W. Willoughby. 1998. Measuring and Monitoring Plant Populations. The Nature Conservancy and Bureau of Land Management, Denver. BLM Technical Reference 1730-1. 477pp.
- Goff, G.F., G.A. Dawson, and J.J. Rochow. 1982. Site examination for Threatened and Endangered plant species. Environmental Management 6(4): 307-316
- Nelson, J.R. 1984. Rare Plant Field Survey Guidelines. In: J.P. Smith and R. York. Inventory of rare and endangered vascular plants of California. 3rd Ed. California Native Plant Society, Berkeley. 174pp.
- Nelson, J.R. 1986. Rare Plant Surveys: Techniques For Impact Assessment. Natural Areas Journal 5(3):18-30.
- Nelson, J.R. 1987. Rare Plant Surveys: Techniques for Impact Assessment. In: Conservation and management of rare and endangered plants. Ed. T.S. Elias. California Native Plant Society, Sacramento. 8pp.
- Deam, C. C. 1940. Flora of Indiana. Department of Conservation, Indianapolis. 1236pp.
- Flora of North America Editorial Committee. 2005. Flora of North America, North of Mexico. Volume 5: Magnoliophyta: Caryophyllidae, part 2. Oxford University Press, New York. 656pp.
- Gleason, H. A., and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second edition. The New York Botanical Garden, Bronx. 910pp.
- Gray, A. 1950. Gray's Manual of Botany; eighth ed. Van Nostrand Reinghold, New York. 1632pp.
- Holmgren, N.H. 1998. Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the vascular plants of Northeastern United States and adjacent Canada. New York Botanical Garden, Bronx. 937pp.
- Mohlenbrock, R.H. 1986. Guide to the Vascular Flora of Illinois. Southern Illinois University Press, Carbondale. 507pp.