Endangered Resources Program Species Information
Shinners Three-awned Grass (Aristida dichotoma)
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Overview
Species Overview
Shinners Three-awned Grass (Aristida dichotoma), a State Special Concern plant, is found on dry sandy bluff edges. Blooming occurs throughout August; fruiting occurs late August through early October. The optimal identification period for this species is late August through early October.
Status and NHI Documented Occurrences in Wisconsin
The table below provides information about the protected status (State and Federal Status) and the rank (S and G Ranks) for Shinners Three-awned Grass (Aristida dichotoma). See the Working List Key for more information about the abbreviations used. Counties shaded blue have documented occurrences for this species in the Wisconsin Natural Heritage Inventory database. For invertebrates, dots depict locations from the "Invertebrate Atlas," a database with occurrences of rare and common aquatic and select terrestrial invertebrate species found in Wisconsin and adjacent areas. While the invertebrate atlas is a quality assured database, not all records have been verified. The map is provided as a general reference of where this species has been found to date and is not meant as a range map.
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Detailed Information
Synonyms: Aristida dichotoma var. dichotoma
Habitat Information
- Habitat Description: Found on dry sandy bluff edges.
- Soils: Dry, sandy or sterile soils.
- Curtis Type(s): Dry prairie
Phenological Information
- Blooming Phenology: throughout August
- Fruiting Phenology: late August through early October
- Optimum Time to Identify: late August through early October
Other
- Vegetative Reproduction:
- Life Cycle: Annual
- Comments: Associated Species: Selaginella rupestris, Agalinis gattingeri, Poa compressa, Polygonum tenue, Aristida purpurascens.
Additional Resources
- Gleason & Cronquist page(s): p. 783
- Britton & Brown (Volume & page): 1:184, 185
- Peterson Flower Guide page(s): None
- Newcomb's Guide page(s): None
1. Guides Referenced:
Farnsworth, E., B. Cobb, & C. Lowe. 2005. Peterson Field Guide to Ferns, Second Edition: Northeastern and Central North America. Houghton Mifflin Harcourt. 440 pp
Flora of North America Editorial Committee (Editor). 1993. Flora of North America: North of Mexico Volume 2: Pteridophytes and Gymnosperms. Oxford University Press. 496 pp.
Gleason, H.A. 1952. The new Britton and Brown Illustrated Flora of the Northeastern United States and Adjacent Canada. 3 volumes. The New York Botanical Garden.
Gleason, Henry A. and Arthur Cronquist 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. New York Botanical Garden. Bronx, New York.
Lellinger, D.B. 1985. A Field Manual of the Ferns and Fern-Allies of the United States & Canada. Smithsonian Institution Press. 389 pp.
Newcomb, L. 1989. Newcomb's Wildflower Guide. Little, Brown and Company. 490 pp.
Peterson, Roger Tory and Margaret McKenny. 1968. A Field Guide to Wildflowers of Northeastern and Northcentral North America. Houghton Mifflin Company, Boston. 420 pp.
Voss, Edward G.1972. Michigan Flora. Cranbrook Institute of Science (Vols I, II, and III)
Photos
No additional photos are available for Shinners Three-awned Grass at this time.
Related Links
Links to Additional Shinners Three-awned Grass Information
There are currently no additional links for this species.
Other Links Related to Vascular Plants
- Wisconsin Vascular Plants [Exit DNR]
- Freckmann Herbarium [Exit DNR]
- Atlas of Wisconsin Prairie and Savanna Flora – Wisconsin State Herbarium [Exit DNR]
- USDA- NRCS Plants Database [Exit DNR]
- USGS Midwestern Wetland Flora – field office guide to plant species [Exit DNR]
- eFloras [Exit DNR]
- Cofrin Center for Biodiversity Herbarium [Exit DNR]
- Intermountain Herbarium Grasses of North America [Exit DNR]
- Orchids of Wisconsin [Exit DNR]
- Digital Flora of Texas Vascular Plant Image Library [Exit DNR]
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