Spotted St. Johnswort, Black Dotted St. Johnswort - Hypericum punctatum
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Hypericum punctatum - Spotted St. Johnswort, Black Dotted St. Johnswort. Found throughout the eastern United States as far west as Texas and Minnesota, this plant is easy to confuse with Common St. Johnswort (Hypericum perforatum,) which has larger flowers, smaller leaves, and leaf dots that are more translucent than those of H. punctatum. H. punctatum also has dots covering more of the petals and sepals. The smaller stems of H. perforatum are also strongly angled and may have small wings on the angles.
Found in:
AL, AR, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, NC, NE, NH, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV
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Distribution of Hypericum punctatum in the United States and Canada:
Map courtesy of The Biota of North America Program.
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| | Site: Lula Lake, Walker County, Ga Date: 2013-August-03 | Photographer: Gerald C. Williamson
Nikon D7000
Tamron SP 90MM f/2.8 AF Macro | | As with several St. Johnswort species, Spotted St. Johnswort has 5 bright yellow petals with many stamens surrounding a central green pistil. The stamens are joined at the base into 3 or 5 fascicles, a characteristic shared with a half-dozen or so Hypericum species. The petals are black-spotted throughout much or all of the petal (Hypericum perforatum only near the margins) and the sepals are also covered with black dots or lines. | | 
| | Site: Lula Lake, Walker County, Ga Date: 2013-August-03 | Photographer: Gerald C Williamson
Nikon D7000 | | The flowers are in dense clusters terminating the stems and branches of the plant. | | Click on the photo for a larger image
| | Site: Lula Lake, Walker County, Ga Date: 2013-August-03 | Photographer: Gerald C Williamson
Nikon D7000 | | Spotted St. Johnswort (or St. John's Wort) grows up to over 3 feet tall. It will branch occasionally in the upper part of the plant. | | Click on the photo for a larger image
| | Site: Lula Lake, Walker County, Ga Date: 2013-August-03 | Photographer: Gerald C Williamson
Nikon D7000 | | The leaves are opposite, sessile or occasionally short-petioled with multiple prominent veins, oblong to ovate, and heavily dotted with spots, which are darker on the newer leaves. The leaves are up to about 2.75 inches long. They are blunt-tipped, unlike the similar dotted St. Johnswort - Hypericum pseudomaculatum (False Spotted St. Johnswort.) | | Click on the photo for a larger image
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References used for identification and information:
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