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Pear leaf (upper side) with Pear rust - disease caused by Gymnosporangium sabinae fungus, close up, white background

Macro image of an eucalyptus leaf with Mycosphaerellaceae

Apple leafminer, Clerk's snowy bentwing (Lyonetia clerkella), larva in a mine in a cherry leaf, Prunus avium.

Extreme close-up of a leaf structure (veins).

Leaf of a deciduous tree in autumn created in detail in the studio

Damaged Oak Leaves

blight diseases symptoms include sudden and severe yellowing, browning, spotting, withering, or dying of leaves, flowers, fruit, stems, or the entire plant.

This is a photograph taken on a mobile phone outdoors of an autumn leaf close up Allegheny National Forest, Pennsylvania.

Asian rust (Phakopsora pachyrhizi) on soy leaf

Close-up of an eucalyptus leaf with Mycosphaerellaceae

Macro of galls, gall wasp, infestation of oak leaves in autumn, Cynipidae, Neuroterus numismalis

Macro shot of green leaves

Pear Leaves Infected by Fungal Disease Pear Rust in Orchard. Macro.

Macrophotography, close-up of a dry plant leaf with a colorful background

a close-up with a diseased apricot leaf, fungus, orange

tree leaves attacked by pests

Fungus on the pear tree leaf (Gymnosporangium sabinae)(Birnengitterrost)

Close-up of the veins on a dry leaf

Scald symptoms. Common disease of barley in temperate regions. It is caused by the fungus Rhynchosporium commune and can cause significant yield losses in cooler, wet seasons.

The veins are the vascular tissue of the leaf and are located in the spongy layer of the mesophyll. The pattern of the veins is called venation. They were once thought to be typical examples of pattern formation through ramification, but they may instead exemplify a pattern formed in a stress tensor field. A vein is made up of a vascular bundle. At the core of each bundle are clusters of two distinct types of conducting cells: xylem and phloem.

Caterpillar Eaten Leaf Close Up Abstract

Close-up on a freshly fallen autumn cherry tree leaf.

Autumn forest floor leaf

Macro of Blue Huckleberry (Gaylussacia frondosa) leaf with golden nectar drops at extrafloral nectaries on its underside. Photo taken at Goethe state forest in central Florida. Nikon D750 with Mitakon Zhongyi 20mm f/2 4.5x Super Macro Lens

Leaf mines on horse chestnut leaf. Damage caused by horse chestnut leaf miner (Cameraria ohridella). Leaf in backlit showing details

Leaves damaged by caterpillars and harmful bugs

Apple tree branch with green leaves affected by a fungal disease rust. A branch of a rusted apple tree. Pest control and protection of gardens from diseases.

Rose rust or rose fungus affecting the rose leaves

Natural background material

teak leaves are starting to dry out

Free Images: "bestof:Cedar apple rust showing stomata.jpg en Stomata of cedar apple rust on crab apple leaf own Littleinfo Gymnosporangium juniperi-virginianae"

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