Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Hypericum sphaerocarpum Michx. image
Photographer: Rob Baller           

Wisconsin Department of Natural Resources

Rob Baller
Family Hypericaceae
Hypericum sphaerocarpum Michx.
round-fruited St. John's-wort, round-seeded St. John's-wort
Hypericum: ancient Greek name derived from hyper, "above," and eikon, "picture," from old practice of placing flowers above an image in the house to ward off evil spirits at the midsummer festival of Walpurgisnacht, which later became feast of St. John
sphaerocarpum: from the Greek meaning "spherical seed"
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Threatened
Plant: erect, perennial, 12"-28" tall forb; stems clustered, somewhat woody toward the bottom
Flower: yellow, 5-parted, 1/3" -3/4" wide; inflorescence a compact, many-branched cluster (cyme) of stalked flowers; blooms June-Aug.
Fruit:round to oval capsule with 1 chamber
Leaf:linear to oblong, tapering toward the stem
Habitat: dry; upland, woods, prairies, barrens

More Information Natural Communities Herbarium Specimens
All Hypericum list Google- Images or Text
Hypericum sphaerocarpum Michx. var. turgidum (Small) Svenson
Hypericum turgidum Small

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