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Alder (Alnus glutinosa) is one of the commonest trees found in wetlands. It provides food for good numbers of finches during most winters. Here, it is spring, and fresh green leaves accompany the female catkins / cones (strobili). Strobili are cones, one cone is a strobilus.
Close-up of closed black alder (Alnus glutinosa) flowers hanging from a tree in autumn. The background is green.
Alder pest (Aceria brevitarsus) - a mite that feeds on the underside of leaves.
Grey alder (Alnus incana subsp. incana) with cones. Macugnaga. Verbano-cusio-ossola. Piedmont. Italy.
The semi-mature female cones of a Cut Leaved Alder (Alnus glutinosa 'Imperialis') in September
Leaf Galls on a eucalyptus leaf
Small white insect galls of Diplolepis japonica (Barahatamabachi) wasp on the underside of the leaves of the wild rose Natural+flashlight, close-up macro photography)
Leaf. macro photography
Alder pine cones on small branch
A single fruit capsule of a Coliguay Tree (Colliguaja odorifera) in late winter in central Chile, near the capital Santiago.  The developing fruit has been invaded by the tiny Chalcid wasp, Aprostocetus colliguayae, that has caused a swollen gall to develop and protect the growing wasp larvae, effectively sterilising the fruit capsule of the Coliguay plant.
Fruits of Gray alder isolated against white background
Deciduous tree to 25m, with smooth silvery-gray bark striped with brown; trunk fluted. Leaves oval, pointed, somewhat pleated, sharply toothed, hairy on veins beneath. Catkins greenish to 5cm, with the leaves. Fruit in pendant clusters, surrounded by 3-lobed bracts; nuts small.\nFlowering Season: April-May.\nHabitat: Woods, hedgerows and scrub, occasionally pollarded, mostly in low altitudes.\nDistribution: S. Britain and Europe, north to S Sweden.\n\nThis Picture is made during a Long Weekend in the South of Belgium in June 2019.
A mass of fungus growth on a tree in full leaf.
Diseased sycamore tree leaves in close up in late summer.
alder, glutinosa, alnus, fruit, berry, blackberry, nature, green, plant, food, bush, leaf, red, ripe, black, flower, summer, garden, raspberry, tree, branch, leaves, berries, blackberries, spring, macro, agriculture, wild, cones, cone
Sälg (Salix caprea) goat willow, pussy willow, great sallow branch in spring \nPhoto taken outdoors in nature in natural sunlight
Spiny growths stimulated by eriophyid mites feeding on grape leaf.
A single fruit capsule of a Coliguay Tree (Colliguaja odorifera) in early spring in central Chile, near the capital Santiago.  When the 3-lobed fruit capsule ripens and dries on a hot day, the seeds are thrown several metres away. The species is a type of spurge (Euphorbid) and, like many spurges, has many uses in medicine and poisons. The milky sap can ‘burn’ the skin, and is used in folk medicine for pains and toothache (without swallowing it because it is toxic), as well as to treat corns and warts. In the past, it was used to poison arrowheads used by the aboriginal Mapuche peoples.
The twig, buds and flower gall of a One-leaved ash tree (Fraxinus excelsior 'Diversifolia') in July
Birch earrings close-up
Poplar blossoms in early spring close-up. Red inflorescences on tree branch. Male catkins populus nigra on green background. Brown buds blooming and germinate in sunny day. Long flowers of poplar.
These galls are produced by tiny Cynipid wasps, which go through a complicated life cycle involving two stages of development. In June, a generation of male and female wasps hatch from currant galls. The adults mate and the female lays fertilized eggs on the undersides of  oak leaves. These cause the creation of the spangle galls, in which the grub matures. The spangle galls fall from the leaves in September and the wasp continues to grow within the leaf litter, producing a female-only generation in the following spring.
Beech Nuts Of Summer.
Catkins and beech nuts on a beech tree in autumn at Fowlmere nature reserve.
black alder (Alnus glutinosa) cones and leaves
Tree blooming in early spring. Tree buds.
Erineum galls caused by mites Acalitus phyllereus on green leaf of Alnus incana or Grey alder
beech tree twig with leaves in the forest, wet from recent rain, with fruit.
The twig & buds of a grey alder tree in August (Alnus incana)
Beech nuts with some leafs on a Beech branch. Captured during summer season.
Free Images: "bestof:Taphrina amentorum gall.JPG en The Alder Tongue Gall Taphrina alni on Alder Alnus glutinosa Own Rosser1954 Roger Griffith 05/01/2009 Eglinton Country Park"
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