Bogs and Acidic Peatlands of Southern New England by Marsha C. Salett
Hypericum mutilum L.
CLUSIACEAE (Mangosteen Family)
EtymologyHypericum is derived from the ancient Greek word for St. Johnswort, hypereikon: hyper= above and eikon = picture, and so named because the flowers, which bloom in late June, were placed above images to ward off evil spirits at the ancient midsummer festival of Walpurgisnacht; mulitum is Latin for mutiliated.
DescriptionDwaft St. John's-wort is a small, many-branched, annual or perennial herb that grows 4-30" tall. It has opposite leaves and branches, with tiny yellow flowers clustered at the branch tips.
Wetland indicator statusFACW
Plant Height4-30 inches
LeavesOpposite, simple, entire; 2/5 -- 1" long; ovate to elliptical, with a blunt tip and rounded base; sessile.
Flower/InflorescenceYellow, tiny (3/16" wide), 5 petals, in small clusters at tips of branches.
FruitCapsule, tiny (3/16 -1/4"), green, single compartment.
HabitatPond and stream margins, wet meadows, moist to wet soil.
RangeNewfoundland and Quebec to Manitoba; south to Florida and Texas.
(c) 1998-2006 Marsha C. Salett