Resources
- Fire Effects Information System - USDA Forest Service
Representative Images
0023009 common St. Johnswort Hypericum perforatum Flower(s) Norman E. Rees |
1559301 common St. Johnswort Hypericum perforatum Feature(s) Ohio State Weed Lab Archive |
1459528 common St. Johnswort Hypericum perforatum Fruit(s) Steve Dewey |
2187026 common St. Johnswort Hypericum perforatum Flower(s) David Cappaert |
1196114 common St. Johnswort Hypericum perforatum Flower(s) Jamie Nielsen |
1459525 common St. Johnswort Hypericum perforatum Flower(s) Steve Dewey |
0024070 common St. Johnswort Hypericum perforatum Plant(s) Norman E. Rees |
0025053 common St. Johnswort Hypericum perforatum Infestation Norman E. Rees |
1459526 common St. Johnswort Hypericum perforatum Flower(s) Steve Dewey |
1624011 common St. Johnswort Hypericum perforatum Plant(s) Carol DiSalvo |
1459529 common St. Johnswort Hypericum perforatum Root(s) Steve Dewey |
5307061 common St. Johnswort Hypericum perforatum Plant(s) USDA PLANTS Database |
5307062 common St. Johnswort Hypericum perforatum Seed(s) Steve Hurst |
Maps
EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
Alternative content
State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org
Alternative content
Invasive Listing Sources
- California Invasive Plant Council
- California Noxious Weeds
- City of Ann Arbor Michigan Parks and Recreation
- Colorado Noxious Weeds
- Faith Campbell, 1998
- Hoffman, R. & K. Kearns, Eds. 1997. Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Bureau of Endangered Resources. Madison, Wisconsin. 102pp.
- Illinois Invasive Plant List
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Kentucky Exotic Pest Plant Council - Lesser Threat
- Missouri Department of Conservation,
- Montana Noxious Weeds
- Native Plant Society of Oregon, 2008
- Nevada Noxious Weeds
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Oregon Noxious Weeds
- Pacific Northwest Exotic Pest Plant Council, 1998
- South Dakota Noxious Weeds
- Tennessee Exotic Pest Plant Council - Watch List A
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Wyoming Noxious Weeds
Taxonomic Rank
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Dilleniidae |
| Order: Theales |
| Family: Clusiaceae |
| Genus: Hypericum |
Other System Links
Plants: HYPEBayer: HYPPE
GRIN: 19600
ITIS: 21454
NPDN Pest: PCBABBA
NPDN Host: 36404
Synonyms and Other Names
Other Common Names:
Klamathweed, St. John's wort
| Common Name Reference: | USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA. |
| Scientific Name Reference: | USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA. |
Forestry Images is a joint project of the Center for Invasive Species and Ecosystem Health, USDA Forest Service and International Society of Arboriculture. |
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Last updated on Tuesday, May 04, 2010 at 02:41 PM