|Photo was taken by Gil Nelson|
|Division:||Magnoliophyta - Flowering plants|
|Class:||Liliopsida – Monocotyledons|
|Natural range of Habenaria quinqueseta from USDA NRCS Plants Database.|
Common names: longhorn bog orchid; long-horned habenaria; Michaux’s orchid; longhorn false reinorchid
A description of Habenaria quinqueseta is provided in The Flora of North America.
Habenaria quinqueseta is a perennial herbaceous species. It reaches heights of about 27 inches with white flowers.
Habenaria quinqueseta is distributed along the southeastern coastal plain, from South Carolina south to southern Florida and west to southeastern Texas.
H. quinqueseta is generally found in moist hardwood hammocks, wet pine flatwoods, ditches, and Altamaha Grit outcrops. It has been observed in moist to dry loamy or sandy soils of longleaf pine savannas and open mixed woodlands. As well, it can be found along roadsides, and in swamps, meadows, and dry to wet mixed flatwoods. It is listed by the USDA Natural Resources Conservation Service as a facultative wetland species that most often occurs in wetland habitats but can also occasionally be found in non-wetland habitats. It has been shown to decrease in frequency with clearcutting the overstory. This species is also considered an indicator species of the north Florida longleaf woodlands habitat.
Associated species include Pinus, Quercus, Magnolia, Cornus, Liquidambar styraciflua, Vaccinium, Pinus taeda, and Quercus nigra.
Habenaria quinqueseta is an indicator species for the North Florida Longleaf Woodlands community type as described in Carr et al. (2010).
This species is thought to be dispersed by gravity. 
Conservation, cultivation, and restoration
It is listed on the global status as G4 due to this species being critically imperiled in Texas, Louisiana, Georgia, and South Carolina.
References and notes
- Weakley, A.S. 2020. Flora of the Southeastern United States. Edition of 20 October 2020. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
- [] Lady Bird Johnson Wildflower Center. Accessed: May 17, 2019
- 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 2014. Collectors: Loran C. Anderson, R. Kral, U. Reis, Richard R. Clinebell II, Leon Neel, and Paul C. Standley. States and Counties: Florida: Leon. Georgia: Dougherty and Thomas. Country: Honduras
- [] NatureServe Explorer. Accessed: May 17, 2019
- USDA, NRCS. (2016). The PLANTS Database (http://plants.usda.gov, 17 May 2019). National Plant Data Team, Greensboro, NC 27401-4901 USA.
- Brockway, D. G. and C. E. Lewis (2003). "Influence of deer, cattle grazing and timber harvest on plant species diversity in a longleaf pine bluestem ecosystem." Forest Ecology and Management 175: 49-69.
- Carr, S. C., et al. (2010). "A Vegetation Classification of Fire-Dependent Pinelands of Florida." Castanea 75(2): 153-189.
- Carr, S.C., K.M. Robertson, and R.K. Peet. 2010. A vegetation classification of fire-dependent pinelands of Florida. Castanea 75:153-189.
- Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 17 MAY 2019
- Kirkman, L. Katherine. Unpublished database of seed dispersal mode of plants found in Coastal Plain longleaf pine-grasslands of the Jones Ecological Research Center, Georgia.
- Robertson, K.M. Unpublished data collected from Pebble Hill Fire Plots, Pebble Hill Plantation, Thomasville, Georgia.
- Glitzenstein, J. S., D. R. Streng, R. E. Masters, K. M. Robertson and S. M. Hermann 2012. Fire-frequency effects on vegetation in north Florida pinelands: Another look at the long-term Stoddard Fire Research Plots at Tall Timbers Research Station. Forest Ecology and Management 264: 197-209.