Dwarf St. John's-wort

Hypericum mutilum

''Hypericum mutilum'' is a species of St. John's wort known by the common name dwarf St. John's wort. It is native to parts of North America, and is present in other parts as an introduced species.
Dwarf St. John's Wort (Hypericum mutilum) Growing on a chert driveway at a dense mixed forest edge. Dwarf St. John's-wort,Geotagged,Hypericum mutilum,Summer,United States

Appearance

It is an annual or perennial herb taking a multibranched erect form up to about 60 centimeters tall. The oval green leaves are one or two centimeters long and are covered in tiny glands.

The inflorescence is a compound cyme of tiny flowers. Each flower has five yellow to orange-yellow petals 2 millimeters in length and five green sepals which are slightly longer. At the center of the flower are many whiskery stamens. The fruit is a capsule a few millimeters wide containing many seeds.

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderMalpighiales
FamilyHypericaceae
GenusHypericum
SpeciesH. mutilum