Common names: Two-flowered rush, Bog rush, Large Grass-leaved Rush
|Photo by Gary Fleming at the Digital Atlas of the Virginia Flora|
|Division:||Magnoliophyta - Flowering plants|
|Class:||Liliopsida - Moncots|
|Natural range of Juncus biflorus from USDA NRCS Plants Database.|
Synonyms: Juncus marginatus Rostkovius, Juncus aristulatus Michaux var. biflorus (Elliott) Small.
Also known as bog rush, J. biflorus is a native perennial graminoid that is a member of the Juncaceae family. It has a rapid rhizomatous growth form reaching a mature height of 3.5 feet.
J. biflorus can be found in the Southeastern United States from Mississippi and up to Michigan as well as along the Atlantic coast to New Jersey.
The main communities J. biflorus can be found include pine savannahs, pine flatwoods, mesic portions of sandhill-pocosin ecotones, and even roadsides, wet meadows, interdune swales, tidal marshes, and ditches. As well, J. biflorus has been observed on the margin of an old wet fireland, margin of wet woods, and in a flooded depression.
Blooming occurs June through October.
Conservation, cultivation, and restoration
J. biflorus is listed as endangered in the state of New York, and is listed as threatened in the state of Pennsylvania.
References and notes
- Weakley, A.S. 2015. Flora of the southern and mid-atlantic states. Working Draft of 21 May 2015. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
- USDA Plants Database URL: https://plants.usda.gov/core/profile?symbol=JUBI
- Weakley, A. S. (2015). Flora of the Southern and Mid-Atlantic States. Chapel Hill, NC, University of North Carolina Herbarium.
- Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2018. Collectors: John B. Nelson, Wade Biltoft, Keith Bradley, Daniel Castillo, and Richard D. Porcher. States and counties: South Carolina: Berkely and Orangeburg.