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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.

Symphytum officinale, comfrey or knitbone, used in folk and traditional medicine.

Baby sun rose, heart-leaf iceplant, rock rose, dew plant, noon flower, red apple, ice plant (Aptenia cordifolia), is a species of succulent plant in the iceplant family (Aizoaceae), belonging to the order Caryophyllales.

Hemlock woolly adelgid (HWA) infestation on underside of eastern hemlock branch in Connecticut. This tiny sapsucking insect from Asia, discovered in Virginia in 1951, is a major killer of eastern hemlocks, which are vitally important to Northeastern forest ecosystems. HWA is named for its woolly egg masses. Thanks to introduction of the Japanese ladybeetle, a predator of HWA, many hemlocks in Connecticut have survived since the first waves of tree mortality some 35 years ago.

The fruits and white flowers of Croton antisyphiliticus in the field

Photomicrograph of one celled amoeba. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination.

Junco

Leaf Galls on a eucalyptus leaf

Plant Galls on a Oak Leaf, Sierra de Guadarrama National Park, Segovia, Castile Leon, Spain, Europe

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.

Leaf of grapevines with galls of Grape phylloxera, Daktulosphaira vitifoliae

Lentils in the shell. Lentils need a support plant to grow up, for example with oats or barley

Rust fungus on underside of pear leaf (Pyrus sp.) showing fruiting body and orange discoloration of leaf

Closeup of wild flower head

Cedar-apple Rust Fungus(Gymnosporangium juniperi-virginianae) growing on a Red Cedar (Juniperus virginiana) in spring.

Close up of Bizarre plant

Coix lacryma-jobi

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

Aspergillus fumigatus is one of the most common Aspergillus species to cause disease in individuals with an immunodeficiency. This pathogen primarily causes invasive infection in the lung.

close-up photo of green plants growing wild in tropical mountain areas

Squash preparation of onion root tip cells stained to reveal chromosomes, Bright field illumination, light microscopy. This image was taken with the X40 objective lens. Depth of focus is extremely low at this magnification. Smaller apertures give greater depth of focus, but image quality deteriorates and resolution is greatly reduced. The aperture in this image was optimised for contrast and resolution. Chromatic abberation is inevitable in light microscopy, but has been kept to a minimum in this image.

plant

Torrey's Ephedra, Torrey's jointfir or Torrey's Mormon tea. Ephedra torreyana. Capitol Reef National Park, Utah; Colorado Plateau. Ephedraceae Family.

Hemiptera wax Cicadellidae insects on wild plants, North China

Pods in summer

Image of one sunflower seed of a birch

Plant Leaves with Blight Disease

Autumn Scrophularia Auriculata Plant.

White webbed cocoon of an unknown butterfly species on a stinging nettle

Free Images: "bestof:Augasma aeratella a sprig of Polygonim aviculare with pod-like galls caused by larva.JPG en Stainton �s Natural History of the Tineina 1855 �1873 Augasma"

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