Hypericum sphaerocarpum

Hypericum sphaerocarpum
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Malpighiales
Family:	Hypericaceae
Genus:	Hypericum
Species:	H. sphaerocarpum
Binomial name
Hypericum sphaerocarpum Michx.

Hypericum sphaerocarpum, the roundseed St. Johnswort^[1] or barrens St. John's Wort, is a species of flowering plant in the St. John's Wort family. It is native to the Eastern United States where it is primarily found in the Midwest and Mid-South.^[2] Its preferred habitat is dry, calcareous glades and prairies.^[3] It is a semi-woody perennial that produces clusters of yellow flowers in the summer.

Hypericum sphaerocarpum is often confused with Hypericum dolabriforme where their ranges overlap. H. sphaerocarpum can be distinguished by its smaller flowers, glossy leaves, and patch-forming rhizomes.

References

1. "Hypericum sphaerocarpum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 15 May 2015.
2. BONAP Project
3. Illinois Wildflowers