Saint John's Wort Family

Airly, New South Wales, Australia

Wisconsin, United States

2010-07-18 Lower Austria, district Gnserndorf (sand dunes of Marchfeld, 160 m AMSL).German name: Echt-Johanniskraut

2010-07-18 Lower Austria, district Gnserndorf (sand dunes of Marchfeld, 160 m AMSL).German name: Echt-Johanniskraut

Gundaroo, New South Wales, Australia

2010-07-18 Lower Austria, district Gnserndorf (sand dunes of Marchfeld, 160 m AMSL).German name: Echt-Johanniskraut

Dosrius, Maresme, Catalunya

Airly, New South Wales, Australia

Rothenbuerg, Bavaria, Germany

Herbarium Blackwellianum emendatum et auctum, id est, Elisabethae Blackwell collectio stirpium.Norimbergae : Typis Io. Iosephi Fleischmanni, 1750-1773..biodiversitylibrary.org/page/291049

2010-07-18 Lower Austria, district Gnserndorf (sand dunes of Marchfeld, 160 m AMSL).German name: Echt-Johanniskraut

Rothenbuerg, Bavaria, Germany

image of Hypericum perforatum COMMON ST. JOHN'S WORT at the James Woodworth Prairie Preserve - multiple buds and blooms

Hypericum perforatum L. First collected in Utah in 1997 in Box Elder County. European species known to be invasive in North America. First mentioned in our floras in the Intermountain Flora Vol. 2B in 2005, with a distribution along the Wasatch Front of Box Elder, Cache and Davis Cos. It was seen in June of 1998 by Bill Gray at about 7200 W. and I-15 in Salt Lake Co. It has since been observed in two locations in northern Salt Lake County (fall of 2010 and fall of 2011) and in 2011 on the west slope of the Oquirrh Mountains in Tooele Co. (by Blake Wellard). There is also a report that it may have been seen a number of years ago at Pineview Reservoir in Weber County.It is possible that it was used here in early pioneer homesteads and so may or may not have spread here recently. It is not acting like an invasive in the areas observed in Salt Lake and Davis Cos. thus far (but it was at the 7200 West location).September 19, 2009, Davis County, Utah, foothills above north Bountiful, approx, 4760 ft.; also observed growing in foothills above north Centerville/south Farmington on August 8, 2009.

White Pine, Michigan, United States

Hypericum perforatum L. First collected in Utah in 1997 in Box Elder County. European species known to be invasive in North America. First mentioned in our floras in the Intermountain Flora Vol. 2B in 2005, with a distribution along the Wasatch Front of Box Elder, Cache and Davis Cos. It was seen in June of 1998 by Bill Gray at about 7200 W. and I-15 in Salt Lake Co. It has since been observed in two locations in northern Salt Lake County (fall of 2010 and fall of 2011) and in 2011 on the west slope of the Oquirrh Mountains in Tooele Co. (by Blake Wellard). There is also a report that it may have been seen a number of years ago at Pineview Reservoir in Weber County.It is possible that it was used here in early pioneer homesteads and so may or may not have spread here recently. It is mostly not acting like an invasive in the areas observed in Salt Lake and Davis Cos. thus far (but it was at the 7200 W. location).Grows in dry habitats whereas the native H. scouleri grows in usually higher elevation, moister habitats. H. perfolatum has acuminate sepals and linear/oblanceolate leaves compared to H. scouleri which has more rounded/obtuse sepals and boarder sometimes suborbicular leaves. Both have branching cymes. The flowers are 5-merous and are yellow; the branching nature of the inflorescence is less obvious when the plants are in flower compared to later in the season.September 19, 2009, Davis County, Utah, foothills above north Bountiful, approx, 4760 ft.; also observed growing in foothills above north Centerville/south Farmington on August 8, 2009.

field image of Hypericum perforatum COMMON ST. JOHN'S WORT at the James Woodworth Prairie Preserve - a stand at full bloom

2010-07-18 Lower Austria, district Gnserndorf (sand dunes of Marchfeld, 160 m AMSL).Stem/leaves.German name: Echt-Johanniskraut

close up image of Hypericum perforatum COMMON ST. JOHN'S WORT at the James Woodworth Prairie Preserve - a flower head showing buds, flowers at full bloom, and flowers where petals start to curl as they die back (and dry up, but do not drop)This species is featured in the soon-to-be-published book, Elusive Splendor: Wildflowers of the Tall Grass Prairie. Contact frank@black-sweater-art.com for more information.

Parque Nacionales Natural Chimgaza, Colombia