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Illustration of inhaled pollen grains in a lung Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled They can also t
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Illustration of inhaled pollen grains in the windpipe (trachea) Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled
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Illustration of inhaled pollen grains in a lung Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled They can also t
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Illustration of inhaled pollen grains in the windpipe (trachea) Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled
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Illustration of inhaled pollen grains on the nasal epithelium Pollen grains are allergens and can cause cause hay fever (allergic rhinitis) when inha
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Illustration of inhaled pollen grains on the nasal epithelium Pollen grains are allergens and can cause cause hay fever (allergic rhinitis) when inha
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Assorted pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOSCIEN
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Assorted pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOSCIEN
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Sunflower (Helianthus annuus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Brownian motion as noted by french physicist Jean Perrin (1870-1942) The plot shows the positions of three microscopic pollen grains suspended in wa
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Sunflower (Helianthus annuus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Silver birch (Betula pendula) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Silver birch (Betula pendula) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Rose (Rosa sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZL
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Rose (Rosa sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZL
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Rapeseed (Brassica napus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by N
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Rapeseed (Brassica napus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by N
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Rapeseed (Brassica napus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by N
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Passion flower (Passiflora sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Macrophotograph of a section through the ovary of a hyacinth flower Hyacinthus orientalis Pollen is brushed onto the rough-surfaced stigma by visiti
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Passion flower (Passiflora sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Geranium sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOS
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Geranium sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOS
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Eucalyptus sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLO
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Eucalyptus sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLO
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Dandelion (Taraxacum officinale) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Dandelion (Taraxacum officinale) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
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Female plant with ovules Cycas Circinalis Family Cycadaceae Cycas has separate male and female plants The male plants bear male cones at the apex
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Male cone Cycas Circinalis Family Cycadaceae Cycas has separate male and female plants The male plants bear male cones at the apex This male con
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Hay fever Artwork depicting hay fever showing pollen grains (yellowbrown) entering the nasal cavity (red centre) of a hay fever sufferer Pollen gr
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Illustration of various plant cells and tissues from Principles of Scientific Botany published in 1849 by the German botanist Jakob Matthias Schleiden
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Anther structure illustration by ALI DAMOUHSCIENCE PHOTO LIBRARY
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Anther structure illustration by ALI DAMOUHSCIENCE PHOTO LIBRARY
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Pollen particles in the air illustration
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Pollen particles in the air illustration
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Pollen in glass Germany Europe by Caroline Brinkmann
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Flower pollen close up Germany Europe by Caroline Brinkmann
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Daisy disc floret SEM
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Allergens Conceptual computer artwork of allergens in the nasal cavity The spiky spheres could represent pollen grains while the smooth spheres cou
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Daisy disc floret SEM
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Daisy seed head SEM
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Daisy seed head SEM
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A close up of a Nezara viridula showing a ocelli and the ommatidium of a compoud eyes orange spots are pollen grains and texture can be apreciatted
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Eudicot plant variety illustration Eudicots are a group of flowering plants (angiosperms) that have three pores or grooves in their pollen grains an
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Landscape of a field of sunflowers next to a field road
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A close-up of a sunflower at sunset during the flowering period
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Sunflower flower close-up Wild bees collect honey on the farm
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Christmas rose (Helleborus niger) reproductive parts
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Pollen grain Coloured scanning electron micrograph (SEM) of a pollen grain of the Sycamore tree Acer pseudoplatanus It is triangularly shaped with
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Christmas rose (Helleborus niger) reproductive parts
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Beard of corn with light
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Growing corn mustache
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Male corn flowers sending out pollen
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Male corn flowers bathed in light
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Marsh-marigold leaf light micrograph
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Testate amoebas SEM
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Light micrograph of pollen grains of the hollyhock ( Malvaceae ) The intense colours are not natural and are a result of the staining process Magnif
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Testate amoebas SEM
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Rotifer SEM
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Coloured scanning electron micrograph (SEM) of a fir pollen grain surrounded by fungal hyphae on a piece of coarse woody debris Fungal hyphae have al
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Relative size of particles illustration
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Germination of a pollen grain illustration
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Pollen grain structure illustration
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Pistil structure illustration Pistils hold a plants female reproductive structures They contain one or more carpels which in turn contain a sti
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Pollen grains illustration
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Pollen grains illustration
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False-colour scanning electron micrograph of pollen grains of Common Mallow Malva sylvestris The grains are spherical about 108 micrometres across
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Buckwheat Flower Flower visited by Namihanaabu
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Illustration of a Darwinylus marcosi beetle covered in pollen grains (yellow) In 2016 a specimen of this beetle was found preserved in 105 million ye
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Radiator plant (Peperomia sp) flowers light micrograph
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Albizia julibrissin pollen grains light micrograph
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Oxalis pollen SEM
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Spanish flag pollen SEM
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Spanish flag pollen SEM
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Oxalis pollen SEM
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Oxalis pollen SEM
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False colour scanning electron micrograph of many pollen grains of a Colts foot Tussilago farfara Its outer wall (exine) consists of sharp spines; t
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Spanish flag pollen SEM
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School building and cherry blossoms in a glorious spring
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Sweet pea pollen SEM
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Sweet pea pollen Coloured scanning electron micrograph (SEM) The sweet pea Lathyrus odoratus is a flowering plant in the genus Lathyrus in the fami
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Sweet pea pollen Coloured scanning electron micrograph (SEM) The sweet pea Lathyrus odoratus is a flowering plant in the genus Lathyrus in the fami
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Rice Flower
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Rice Flower
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Rice Flower
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Rice Flower
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Household dust Coloured scanning electron micrograph (SEM) of a sample of household dust Such dust comprises shed skin cells dust mites hairs and
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Rice Flower
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Rice Flower
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Rice Flower
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Rice Flower
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Rice Flower
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Pollen of Eucalyptus SEM
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Pollen of Pulmonaria SEM
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Pollen of Eucalyptus SEM
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Pollen of Pulmonaria SEM
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Morning Glory pollen Coloured scanning electron micrograph of a pollen grain of the Morning Glory plant Ipomoea learii The grain has a highly sculp
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