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Home/Species/ Roundleaf Bluet

Houstonia procumbens

(Walt. ex J.F. Gmel.) Standl.

Roundleaf Bluet

G5Secure Found in 3 roadless areas NatureServe Explorer →
G5SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.133582
Element CodePDRUB1T0J0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderRubiales
FamilyRubiaceae
GenusHoustonia
Other Common Names
roundleaf bluet (EN)
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2022-09-30
Change Date1988-12-15
Edition Date2022-10-31
Edition AuthorsTreher (2022), rev. SE RSGCN Workshop (2022)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank Reasons
Houstonia procumbens is a perennial herb that is endemic to the southeastern United States where it occurs from southeastern North Carolina to southern Florida and west to southeastern Louisiana. It is common across much of the southeastern Coastal Plain.
Range Extent Comments
Houstonia procumbens is endemic to the southeastern United States where it occurs from southeastern North Carolina to southern Florida and west to southeastern Louisiana (Weakley and Southeastern Flora Team 2022). Range extent was calculated with GeoCAT using occurrence and photo based observation data (GBIF 2022, iNaturalist 2022, SEINet 2022, Bachman et al. 2011).
Occurrences Comments
Based on NatureServe Network occurrence data, herbarium records, photo-based observations, and anecdotal evidence, there are likely over 300 occurrences rangewide (GBIF 2022, SEINet 2022, iNaturalist 2022, NatureServe 2022). It is common across much of the southeastern Coastal Plain (Weakley and Southeastern Flora Team 2022).
Threat Impact Comments
In southeastern Louisiana, this species may be threatened by development pressure (C. Doffitt, pers. comm., 2022).
Ecology & Habitat

Habitat

This species grows in moist to wet sandy pinelands and on beach dunes (Weakley and Southeastern Flora Team 2022).

Reproduction

Houstonia procumbens is unique in that it has both heterostylous and cleistogamous flowers (Jones 2012).
Terrestrial Habitats
Forest/WoodlandForest - ConiferWoodland - ConiferSand/dune
Other Nations (1)
United StatesN5
ProvinceRankNative
North CarolinaS1Yes
MississippiS4Yes
South CarolinaSNRYes
AlabamaSNRYes
FloridaS5Yes
GeorgiaSNRYes
LouisianaS2Yes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentUnknownExtreme or 71-100% pop. declineHigh (continuing)

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Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (3)
Florida (3)
AreaForestAcres
Alexander Springs CreekOcala National Forest2,954
Farles PrairieOcala National Forest1,901
SavannahApalachicola National Forest1,927
References (10)
  1. Bachman, S., J. Moat, A.W. Hill, J. de la Torre, and B. Scott. Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. In: Smith, V., and L. Penev (Eds). 2011. e-Infrastructures for data publishing in biodiversity science. ZooKeys 150:117-126. Version BETA. Accessed online: http://geocat.kew.org/editor
  2. Doffitt, Chris. Personal communication. Botanist. Wildlife Diversity Program, LA Department of Wildlife and Fisheries, Pineville, Louisiana.
  3. Global Biodiversity Information Facility (GBIF). 2022. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2022).
  4. iNaturalist. 2022. Online. Available: https://www.inaturalist.org (accessed 2022).
  5. Jones, E. H. 2012. Floral Morphology and Development in <i>Houstonia Procumbens</i> (Rubiaceae), a Uniquely Distylous, Cleistogamous Species. Ph.D. dissertation. Florida State University, Tallahasee, Florida.
  6. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  7. NatureServe. 2022. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  8. Southeastern Regional Species of Greatest Conservation Need Workshop (SE RSGCN Workshop). 2022. Jon Ambrose, Keith Bradley, Malissa Briggler, John Burkhart, Emily Coffey, Todd Crabtree, Amanda Eberly, Margie Dent, Chris Doffitt, Bruce Hoagland, Amy Jenkins, Wesley Knapp, Stephanie Koontz, Lisa Kruse, David Lincicome, Gemma Milly, Sarah Norris, Carrie Radcliffe, Hanna Rosner-Katz, Al Schotz, Jason Singhurst, Diana Soteropoulos, Carlee Steppe, Samantha Tessel, John Townsend, Alan Weakley, Brenda Wichmann, and Theo Witsell. Status assessment workshop, Oct. 17-20, 2022, Atlanta Botanical Garden, Atlanta, GA.
  9. Southwest Environmental Information Network (SEINet). 2022. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2022).
  10. Weakley, A.S., and Southeastern Flora Team. 2022. Flora of the southeastern United States. Edition of April 24, 2022. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. 2022 pp.