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A group of three Oak Galls, or Oak Apples, on a small young oak tree. Taken in a woodland in West Yorkshire, UK, with a Canon EOS 700d digital camera.
The Valley Oak, can sometimes be riddled with large growths along the stem. Small wasps produce these oak apples or galls. The large oak apples, are induced by the gallwasp Andricus californicus. Shollenberger Park; Petaluma Wetlands; Petaluma; Sonoma County; California. Quercus lobata.
Japanese grape tree or Japanese grape, Hovenia dulcis loaded with fruits in a farm in Brazil
Leaf Galls on a eucalyptus leaf
Acirea erinea leaves in ths forest. Nature background.
Diseased Black currant leaf. It is caused by aphids/mites (under the leaf and red blisters/tumors form on the top of the leaf.
Closeup view of leaf galls parasite.
This grape leaf is not diseased. The damage is caused by erineum mites, Colomerus vitis. The mites produces what appear to be blisters on the top surface of grape leaves.
Grape leaf aphid phylloxera (Dactylosphaera vitifoliae) Grapevine leaf infested
Picking pears in plantation avoiding the bad ones
Close up of maple leaf with maple wrinkled scab also called Tar Spot. It is caused by a fungus called Rhytisma acerinum. In german it is callled ahorn runzelschorf
Grey alder (Alnus incana subsp. incana) with cones. Macugnaga. Verbano-cusio-ossola. Piedmont. Italy.
The Folii gall ball is formed by the fertilized larva of the oak gall wasp (Cynips quercusfolii).
Small fragrant lilac five-petaled Melia Azedarach flowers and fruits on a tree branch on a Sunny spring day. Flowering of a beautiful tree in natural conditions
Fruits. Cordia Myxa. Family: Boraginaceae. A deciduous tree from the forests of peninsular India. The pulp of this fruit is extr
Wizened apple on a tree in winter.
Detail of an oak leaf with clutch of gall wasps Cynipidae isolated on white
Okra in the rainforest, with the dew of nature, clear and lovely
Biorhza pallida on Quercus robur
Blauglockenbaum - Paulownia tomentosa
A grape leaf showing the galls that are formed during a phylloxera infestation, is a pest of commercial grapevines worldwide.
A leaf from a Silver Maple tree with Maple Bladder Gall which is caused by Eriophyid Mites.
Close-up of large Galls on Common oak leaves created by gall wasp Cynips quercusfolii in Estonian boreal forest
Diseases Of Grape Leaves Eriophyes Colomerus Vitis. Sick Vine Leaf
Leaf with red and yellow discoloration and puckered or blistered. Gardener is inspecting leaf. Selective focus. Vancouver, BC, Canada.
A cluster of salmonberries start to ripen in a coastal forest in southwestern British Columbia. Summer morning in the shade. \nPlant Hardiness Zone 8A.
Skunkbush Sumac (Rhus trilobata) fruits in summer.
tree leaves attacked by pests
aceria cephalonea is a small animal, a type of mite that is a parasite for plants
Stock photo presents close-up details of sycamore tree leaves (Acer pseudoplatanus) affected by disease. The leaves exhibit visible signs of mildew and fungal infection, showcasing the deterioration of their natural health. The vibrant green foliage contrasts sharply with the infected areas, emphasizing the impact of pathogens on this common tree species
Free Images: "bestof:Neuroterus quercusbaccarum currant-like galls.jpg fr Galles à l'allure de groseilles trouvées sous un chêne dues à Neuroterus quercusbaccarum own Helene RB"
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