D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp


Hypericum perforatum L.
PERFORATE ST JOHNS-WORT
Common St Johnswort; Klamath Weed, Penny-john, Rosin, Rosin-rose, Speckled John, Johns-wort, Herb-john, Amber, Tipton Weed, Goat Weed, Eola Weed; St Johns Wort

Life   Plantae   Dicotyledoneae   Clusiaceae   Hypericum

Links
80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on images to enlarge.
Hypericum perforatum, Common St. Johns-wort
© Copyright Sheryl Pollock 2011 · 8
Hypericum perforatum, Common St. Johns-wort
Hypericum perforatum, Common St. Johns-wort
© Copyright Sheryl Pollock 2011 · 7
Hypericum perforatum, Common St. Johns-wort

Hypericum perforatum
© Les Mehrhoff, 2008-2010 · 4
Hypericum perforatum
Hypericum perforatum
© Copyright Bobby Hattaway 2011 · 3
Hypericum perforatum

Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum
Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum

Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum
Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum

Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum
Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum

Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum
Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum

Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum
Hypericum perforatum
© Copyright Malcolm Storey 2011-2117 · 3
Hypericum perforatum

Associates · map
FamilyScientific name @ source (records)
Aphididae  Macrosiphum ( @ AMNH_PBI (1)

Myzus ( @ AMNH_PBI (2)
Apidae  Bombus crotchii @ BMEC_ENT (1)

Bombus fervidus @ BMEC_ENT (1)

Bombus flavifrons @ BBSL (2)

Bombus griseocollis @ CUIC_ENT (1)

Bombus melanopygus @ BBSL (1)

Bombus mixtus @ BBSL (2)

Bombus sitkensis @ BBSL (1)

Bombus vosnesenskii @ BBSL__JPS (1)
Colletidae  Colletes kincaidii @ CUIC_ENT (1)

Hylaeus modestus @ UCMS_ENT (1)
Halictidae  Agapostemon virescens @ I_DBB (1)

Lasioglossum cinctipes @ CUIC_ENT (3)

Lasioglossum foxii @ CUIC_ENT (2)

Lasioglossum perpunctatum @ CUIC_ENT (2)

Lasioglossum truncatum @ CUIC_ENT (1)

Lasioglossum versatum @ UCMS_ENT (1)
Megachilidae  Coelioxys moesta @ CUIC_ENT (1)

Coelioxys rufitarsis @ CUIC_ENT (1)

Osmia bucephala @ BBSL (1)
_  Abstrusomyzus leucocrini @ AMNH_PBI (4)

go to Discover Life's Facebook group

ERROR -- Need to remove recursive link: http://pick18.pick.uga.edu/mp/20p%3Fsee%3DI_USID372%26res%3D320 USID_Seeds

Following modified from Delaware Wildflowers
   Top | See original

Delaware Wildflowers  •  Scientific names

Hypericum perforatum L. Alien St. John's-wort
Hypericaceae — St. johnís-wort family
Non-native
Hypericum perforatum
Augustine Wildlife Area
June 2002

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

Following modified from MissouriPlants.com
   Top | See original


Hypericum perforatum L. - St. John's Wort

Hypericum perforatum plant

Family - Hypericaceae

Stems - Multiple from base, from thick rhizomes, to +1m tall, dichotomously branching (branches decussate), glabrous, glaucous. Midrib of leaf decurrent on stem and with black glandular punctations.

Leaves - Opposite, decussate, sessile, lance-ovate to oblong or elliptic, entire, to +1.8cm long, +7mm broad, entire, acute to obtuse, glabrous, glaucous (mostly below), with black glandular punctations on margins and a few scattered on the leaf tissue, perforate.

Inflorescence - Terminal bracteate cymes. Pedicels to 2mm long, glabrous (or flowers sessile).

Hypericum perforatum plant

Flowers - Petals (4)5, yellow, spreading, to 1.3mm long, 6mm broad, oblong, obtuse, with black glandular punctations. Stamens many (+50), erect to spreading. Filaments yellow, 7-8mm long, glabrous. Anthers biglobose, .7mm broad. Styles 3, spreading, 6mm long, glabrous, yellow. Ovary superior, glabrous, 3.5mm long, 2.1mm in diameter, ovoid, 3-locular, ovules (seeds) many. Sepals 5, linear, 5-6mm long, 1.1mm broad, acuminate, glabrous, with perforations adjacent and parallel to midrib.

Hypericum perforatum flower

Flowering - May - September.

Habitat - Pastures, fields, waste ground, roadsides, railroads.

Origin - Native to Europe.

Other info. - Feeling depressed? Chew on this. Not! Seriously though, this is the species known commonly as "St. John's Wort", which has recently been over-used as an herbal remedy for the symptoms of depression. Traditionally the plant was used as an antibacterial, an anti-inflammatory, and a host of other ailments. One of the active ingredients, hypericin, causes photodermatitis in some people and animals.
The plant can be identified in the field by the transparent (pellucid) perforations on the leaves and sepals, and the black punctate glands on the leaves and stems. The punctations are not as dense as in H. punctatum Lam. , which has much smaller flowers.

Photographs taken in Pictured Rocks National Seashore, MI., 7-22-02.


Back


Following modified from Plants Database, United States Department of Agriculture
   Top | See original

http://plants.usda.gov/java/profile?symbol=HYPE ---> https://plants.usda.gov/java/profile?symbol=HYPE
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://plants.usda.gov/java/profile?symbol=HYPE

Following modified from CalPhotos
   Top | See original


CalPhotos     Photo Database

 

Number of matches : 86
Query: SELECT * FROM img WHERE ready=1 and taxon like "Hypericum perforatum%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0177 3303 3352 0058 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0177 3303 3352 0059 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0072 3301 1163 0119 [detail]
Charles Webber
© 2001 California Academy of Sciences

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 6068 1631 0685 0084 [detail]
© 1995 Saint Mary's College of California

Hypericum perforatum
Hypericum perforatum
Common St. Johnswort
ID: 0000 0000 1003 0111 [detail]
© 2003 Penn Martin II

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0175 3301 2284 0074 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0177 3303 3352 0057 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0175 3301 2284 0072 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0177 3303 3352 0060 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0175 3301 2284 0071 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0175 3301 2284 0073 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0175 3301 2284 0070 [detail]
© 2001 CDFA

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0102 0289 [detail]
© 2001 Julie Kierstead Nelson

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 1104 0374 [detail]
© 2004 Carol W. Witham

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 1104 0726 [detail]
© 2004 Carol W. Witham

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0105 1908 [detail]
© 2005 Louis-M. Landry

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0105 1909 [detail]
© 2005 Louis-M. Landry

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0105 1911 [detail]
© 2005 Louis-M. Landry

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0105 1912 [detail]
© 2005 Louis-M. Landry

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0105 1913 [detail]
© 2005 Louis-M. Landry

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0505 1073 [detail]
© 2005 Luigi Rignanese

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0505 1075 [detail]
© 2005 Luigi Rignanese

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0505 1077 [detail]
© 2005 Luigi Rignanese

Hypericum perforatum
Hypericum perforatum
Klamath Weed
ID: 0000 0000 0505 1338 [detail]
© 2005 Luigi Rignanese

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


Copyright © 1995-2016 UC Regents. All rights reserved.

CalPhotos is a project of BSCIT      University of California, Berkeley

Updated: 2017-08-19 04:16:14 gmt
Discover Life | Top
© Designed by The Polistes Corporation