St. Johnswort Family There are 23 species of Hypericum listed in Tennessee, some are tricky to identify! The Rough-fruited species is often found in cedar glades; I found this one blooming at the Oak Ridge Cedar Barrens in early June. Plants in the Hypericum species cause photosensitivity in animals that eat them. For instance, horses, sheep, and goats with white patches on their skin can suffer sunburn, swelling, and redness in those areas. The lips, ears and eyelids are especially sensitive. The toxin is hypericum. Perennial Where seen: Oak Ridge, Jefferson Middle School Cedar Barrens
St. Johnswort Family There are lots of species of St. Johnswort. The word "wort" means "plant," "St. John's" refers to the blooming time during the festival of St. John's Day in June. Annual or Perennial Where seen: Oak Ridge, Great Smoky Mountains NP, Warriors' Path SP
St. Johnswort Family These St. Johnswort flowers are much smaller than the others of their genus, they also have fewer stamens. Annual / Perennial Where seen: Great Smoky Mountains NP, Oak Ridge Greenways
