| Isoetes butleri | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Lycophytes |
| Class: | Lycopodiopsida |
| Order: | Isoetales |
| Family: | Isoetaceae |
| Genus: | Isoetes |
| Species: | I. butleri |
| Binomial name | |
| Isoetes butleri Engelm. | |
Isoetes butleri, commonly known as limestone quillwort, is a species of plant in the quillwort family, a member of the lycophytes.
It is native to the eastern United States, where it is scattered and local. It is found almost exclusively on seasonally wet alkaline soils. Common habitats include rocky prairies and glades, most often over limestone. This species is inconspicuous and easily overlooked, due to its superficial similarity to a vegetative grass or sedge.
The leaves of Isoetes butleri die back at the end of spring, when its habitat becomes hot and dry. It is then reduced to a below ground corm.
References
- NRCS. "Isoetes butleri". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 30 September 2016.
- "Isoetes butleri". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 30 September 2017.
- "Isoëtes butleri in Flora of North America @ efloras.org". efloras.org. Retrieved 30 September 2017.
- ^ Yatskievych, George (1999). Flora of Missouri, Volume 1. Missouri Botanical Garden Press. p. 131.
- "Isoëtes butleri | Ferns of Texas". ferns.brit.org. Retrieved 30 September 2017.
