| Image |
Descriptor |
Description |
Photographer |
| 5382383 |
Damage |
Spores on infected foliage |
William M. Ciesla |
| 5382385 |
Damage |
Witches broom on spruce |
William M. Ciesla |
| 5382386 |
Damage |
Witches broom on spruce |
William M. Ciesla |
| 5382384 |
Sign |
Spores on infected foliage |
William M. Ciesla |
| 1473019 |
Sign |
|
Rocky Mountain Research Station/Forest Pathology Archive |
| 1473095 |
Sign |
broom after infected needles produced in present year have shed |
Rocky Mountain Research Station/Forest Pathology Archive |
| 2652009 |
Symptoms |
on white spruce in interior Alaska |
Tom Laurent |
| 4215071 |
Symptoms |
on spruce |
John W. Schwandt |
| 5034070 |
Symptoms |
Spruce broom rust on white spruce, adjacent to a tree with a severe lightning injury |
Joseph O'Brien |
| 5366975 |
Symptoms |
Spruce trees exhibiting symptoms of spruce broom rust, Chrysomyxa arctostaphyli. |
William Jacobi |
| 5366976 |
Symptoms |
Spruce tree showing symptoms of spruce broom rust, Chrysomyxa arctostaphyli. |
William Jacobi |
| 0176072 |
Symptoms |
Witches' broom of spruce taken in early summer, when the aecia are still immature. |
W.G. Ziller |
| 0177060 |
Symptoms |
Young Chrysomyxa arctostaphyli broom on spruce |
Forestry Canada, Ottawa Archive |
| 0177061 |
Symptoms |
|
Forestry Canada, Ottawa Archive |
| 0177062 |
Symptoms |
|
Forestry Canada, Ottawa Archive |
| 0656047 |
Symptoms |
Twigs of a witches' broom on spruce caused by Chrysomyxa arctostaphyli. Living current-year needles covered with aecia (centre) and dead previous year needles still attached. |
W.G. Ziller |
| 0656048 |
Symptoms |
Chrysomyxa arctostaphyli on Picea glauca, showing witches' brooms in late summer, when covered with spermogonia and mature aecia. |
W.G. Ziller |
| 0805068 |
Symptoms |
on spruce |
David J. Moorhead |
| 0805069 |
Symptoms |
|
David J. Moorhead |
| 0805070 |
Symptoms |
|
David J. Moorhead |
| 1241502 |
Symptoms |
|
Oscar Dooling |
| 1263078 |
Symptoms |
Mature broom on spruce |
Forestry Canada, Ottawa Archive |
| 1406134 |
Symptoms |
Fraser Experimental Forest |
USDA Forest Service - North Central Research Station Archive |
| 1473061 |
Symptoms |
broom |
Rocky Mountain Research Station/Forest Pathology Archive |
| 1473025 |
Tree(s) |
|
Rocky Mountain Research Station/Forest Pathology Archive |
