| 5307061 |
Plant(s) |
Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 2: 533. |
| 1552179 |
Flower(s) |
|
| 1552178 |
Plant(s) |
in flower |
| 5474862 |
Flower(s) |
Hypericum perforatum (common St. John's wort); note black spots restricted mostly to petal margins |
| 1595149 |
Flower(s) |
|
| 1459529 |
Root(s) |
Roots |
| 0025053 |
Infestation |
research site near |
| 5436111 |
Plant(s) |
plant |
| 0023010 |
Plant(s) |
|
| 0024072 |
Plant(s) |
tallest plant found in old USSR |
| 0023009 |
Flower(s) |
|
| 5436110 |
Flower(s) |
flower |
| 5436112 |
Plant(s) |
plant |
| 0025032 |
Plant(s) |
A foot next to plant in the former USSR, the tallest plant in 6 weeks of looking |
| 1459531 |
Foliage |
|
| 1459530 |
Flower(s) |
|
| 0024070 |
Plant(s) |
Mature plant |
| 1459527 |
Plant(s) |
|
| 1459526 |
Flower(s) |
|
| 2187026 |
Flower(s) |
|
| 1459528 |
Fruit(s) |
|
| 0023013 |
Infestation |
|
| 1459525 |
Flower(s) |
|
| 1196236 |
Plant(s) |
|
| 1196114 |
Flower(s) |
|
| 1624011 |
Plant(s) |
St. John's Wort, native to Eurasia, is a serious problem in parts of the West where it displaces native plants that are important in maintaining soil nutrients, microbial activity, and water cycling. |
| 1196113 |
Flower(s) |
|
| 1196111 |
Plant(s) |
|
| 5396194 |
Flower(s) |
|
| 1552177 |
Flower(s) |
|
| 5392218 |
Flower(s) |
|
| 5392219 |
Flower(s) |
|
| 5392217 |
Infestation |
Small infestation |
| 5391655 |
Flower(s) |
|
| 5374979 |
Seedling(s) |
|
| 5374977 |
Flower(s) |
|
| 5374978 |
Feature(s) |
sprout from rhizome |
| 5374975 |
Infestation |
|
| 5374976 |
Plant(s) |
in flower |
| 5307062 |
Seed(s) |
|
| 1542413 |
Flower(s) |
|
| 5358667 |
Flower(s) |
Close-up view of the flower of St. Johnswort (Hypericum perforatum). |
| 1559307 |
Flower(s) |
|
| 1559309 |
Fruit(s) |
with seeds |
| 1559306 |
Flower(s) |
|
| 1559304 |
Plant(s) |
|
| 1559302 |
Plant(s) |
in flower |
| 1559301 |
Feature(s) |
pellucid dots |
| 1559299 |
Feature(s) |
pellucid dots |
| 1559300 |
Plant(s) |
in flower |
| 1559297 |
Plant(s) |
in flower |
| 1559296 |
Plant(s) |
in flower |
| 1561170 |
Flower(s) |
photo taken 6 July 1994 |
| 1480221 |
Plant(s) |
Hypericum perforatum; St.John's wort |
| 1480223 |
Flower(s) |
Hypericum perforatum; St.John's wort |
| 5159099 |
Plant(s) |
habit |
| 5159100 |
Flower(s) |
flower showing glands |
| 5160001 |
Foliage |
leaves showing glands |
| 5160003 |
Plant(s) |
plant |
| 5160002 |
Plant(s) |
habit in pots |
| 0023011 |
Plant(s) |
|
| 0025054 |
|
light background showing through glands in the leaves of St. Johnswort |
| 0025058 |
Plant(s) |
showing deep tap root |
