Stylisma villosa

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Stylisma villosa
Styl vill.jpg
Photo by Wayne Matchett, SpaceCoastWildflowers.com
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

Description

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[1][2]. Flowers have white corollas and are about two centimeters broad[3]. This species is commonly mistaken for S. aquatica when not flowering[2].

Distribution

Found in Florida, Georgia, Mississippi, Louisiana, and Texas. Listed as vulnerable in Texas[4].

Ecology

Habitat

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, Q. incana, Q. virginiana, Q. myrtifolia, Q. chapmanii, Serenoa repens, and Ceanothus[3].

Phenology

Flowers May through June and fruits June through November[3].

Seed dispersal

Seed bank and germination

Fire ecology

It has been observed growing in burned wetland slash pine savannas[3].

Pollination

The following Hymenoptera families and species were observed visiting flowers of Stylisma villosa at Archbold Biological Station (Deyrup 2015):

Megachilidae: Dianthidium floridiense

Use by animals

Diseases and parasites

Conservation and Management

Cultivation and restoration

Photo Gallery

References and notes

Deyrup, M.A. and N.D. 2015. Database of observations of Hymenoptera visitations to flowers of plants on Archbold Biological Station, Florida, USA.

  1. [[1]]Native Florida Wildflowers. Accessed: March 16, 2016
  2. 2.0 2.1 Hoffman, S.J.. Taxonomic and phylogenetic evaluation of Stylisma (Convolvulaceae). Thesis: University of North Carolina Wilmington
  3. 3.0 3.1 3.2 3.3 Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. 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.
  4. [[2]]NatureServe. Accessed: March 16, 2016