Stylisma villosa

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Stylisma villosa
Styl vill.jpg
Photo by Wayne Matchett,
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida – Dicotyledons
Order: Solanales
Family: Convolvulaceae
Genus: Stylisma
Species: S. villosa
Binomial name
Stylisma villosa
(Nash) House
Styl vill dist.jpg
Natural range of Stylisma villosa from USDA NRCS Plants Database.

Common name: Hairy dawnflower

Taxonomic notes

Synonyms: Bonamia villosa (Nash) K.A. Wilson; Breweria villosa Nash.[1]


S. villosa is a perennial vine that has wiry, twining, thick, pubescent stems. The leaves are alternate, elliptical/oval, densely covered with white hairs and are held upright at a right angle to the ground, which reduces water loss from transpiration during the heat of the day. Inflorescence are solitary or in cymes of 3-7 flowers.[2][3] Flowers have white corollas and are about two centimeters broad.[4] This species is commonly mistaken for S. aquatica when not flowering.[3]


Found in Florida, Georgia, Mississippi, Louisiana, and Texas. Listed as vulnerable in Texas.[5]



In the Coastal Plain in Florida, S. villosa habitats include longleaf pine/scrub oak sand ridges, moist lake shores, and sandy longleaf pine-scrub hickory-oak woods. It can be found in disturbed scrubs, hammocks and along canals through a burned wetland slash pine savanna.

Associated species include Quercus laevis, Quercus incana, Quercus virginiana, Quercus myrtifolia, Quercus chapmanii, Serenoa repens, and Ceanothus.[4]


Flowers May through June and fruits June through November.[4]

Fire ecology

Populations of Stylisma villosa have been known to persist through repeated annual burning,[6] and this species has been observed growing in burned wetland slash pine savannas.[4]


Leafcutting bees such as Dianthidium floridiense (family Megachilidae) were observed visiting flowers of Stylisma villosa at the Archbold Biological Station:[7]

Conservation, cultivation, and restoration

Cultural use

Photo Gallery

References and notes

  1. Weakley, A.S. 2015. Flora of the southern and mid-atlantic states. Working Draf of 21 May 2015. University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.
  2. [[1]]Native Florida Wildflowers. Accessed: March 16, 2016.
  3. 3.0 3.1 Hoffman, S.J.. Taxonomic and phylogenetic evaluation of Stylisma (Convolvulaceae). Thesis: University of North Carolina Wilmington
  4. 4.0 4.1 4.2 4.3 Florida State University Robert K. Godfrey Herbarium database. URL: Last accessed: November 2015. Collectors: Edwin L. Bridges, Robert K. Godfrey, Robert Kral, O. Lakela, Sidney McDaniel, J.B. McFarlin, Steve L. Orzell, Allen G. Shuey. States and Counties: Florida: DeSoto, Highlands, Martin, Palm Beach, Orange, Polk. Compiled by Tall Timbers Research Station and Land Conservancy.
  5. [[2]]NatureServe. Accessed: March 16, 2016
  6. Platt, W.J., R. Carter, G. Nelson, W. Baker, S. Hermann, J. Kane, L. Anderson, M. Smith, K. Robertson. 2021. Unpublished species list of Wade Tract old-growth longleaf pine savanna, Thomasville, Georgia.
  7. Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.