Exine Collection

Passion flower pollen, SEM
Passion flower pollen. Coloured scanning electron micrograph (SEM) of a passion flower (Passiflora caerulea) pollen grain. Pollen grains are the male gametes (sex cells) of a plant

Dandelion pollen grain, SEM
Dandelion (Taraxacum officinale) pollen grain, coloured scanning electron micrograph (SEM). Pollen grains are reproductive structures produced by the male parts of flowering plants

Philadelphia fleabane pollen grains, SEM
Philadelphia fleabane (Erigeron philadelphicus) pollen grains, coloured scanning electron micrograph (SEM). Pollen grains are reproductive structures produced by the male parts of flowering plants

Lily pollen grain on rosemary leaf, SEM
Lily pollen grain on rosemary leaf. Coloured scanning electron micrograph (SEM) of a pollen grain (yellow) from a lily flower (Lilium sp.)

Forsythia pollen grains, SEM
Forsythia pollen grains arranged in a spiral, coloured scanning electron micrograph (SEM). Pollen grains are reproductive structures produced by the male parts of flowering plants

Chickweed pollen grains, SEM
Chickweed pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains (green) from a chickweed flower (Stellaria media)

Flame lily pollen, SEM
Flame lily (Gloriosa sp.) pollen grains, coloured scanning electron micrograph (SEM). The grains have a highly sculptured outer wall (exine)

Hellebore pollen, SEM
Hellebore (Helleborus sp.) pollen grains, coloured scanning electron micrograph (SEM). Magnification: x2000 when printed at 10 centimetres wide

Marrow and forget-me-not pollen, SEM
Pollen grains. Coloured scanning electron micrograph (SEM) of a pollen grain from a marrow plant (Cucurbita sp. left) and a forget-me-not plant (Myosotis sp. lower right)

Hollyhock pollen grain, SEM
Hollyhock pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from a hibiscus (Alcea setosa) flower. Pollen grains are the male sex cells of a flowering plant

Verbena pollen, SEM
Verbena pollen. Coloured scanning electron micrograph (SEM) of pollen grains from verbena bonariensis. Verbena bonariensis is a tall, slender-stemmed perennial

Convolvulus pollen grains, SEM
Convolvulus pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a convolvulus flower. Convolvulus is a genus of about 200 to 250 species of flowering plants in

Water lily pollen grains, SEM
Water lily pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a water lily flower. Nymphaeaceae is a family of flowering plants, commonly called water lilies

Chickweed pollen grain, SEM
Chickweed pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain (green) from a chickweed flower (Stellaria media)

Marigold pollen grain, SEM
Marigold pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from a marigold plant (family Compositae)

Cowslip pollen grain, SEM C016 / 9031
Cowslip pollen grain. Coloured scanning electron micrograph (SEM) of pollen grain from a common cowslip (Primula veris) flower. Pollen grains are the male sex cells of a flowering plant

Cowslip pollen grain, SEM C016 / 9030
Cowslip pollen grain. Coloured scanning electron micrograph (SEM) of pollen grain from a common cowslip (Primula veris) flower. Pollen grains are the male sex cells of a flowering plant

Dwarf checkermallow pollen grain, SEM C016 / 9438
Dwarf checkermallow pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from a dwarf checkermallow (Sidalcea malviflora) flower

Camellia pollen, SEM C015 / 9103
Camellia pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a Camellia sp. flower. The grains have a highly sculpted outer wall (exine)

Geranium pollen, SEM C015 / 9155
Geranium pollen. Coloured scanning electron micrograph (SEM) of pollen (pink) on the stamen of a geranium flower (Geranium sp.)

Camellia pollen, SEM C015 / 9101
Camellia pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a Camellia sp. flower. The grains have a highly sculpted outer wall (exine)

Camellia pollen, SEM C015 / 9089
Camellia pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a Camellia sp. flower. The grains have a highly sculpted outer wall (exine)

Geranium pollen, SEM C015 / 9159
Geranium pollen. Coloured scanning electron micrograph (SEM) of a pollen grain (pink) on the stamen of a geranium flower (Geranium sp.)

Camellia pollen, SEM C015 / 9090
Camellia pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a Camellia sp. flower. The grains have a highly sculpted outer wall (exine)

Geranium pollen, SEM C015 / 9156
Geranium pollen. Coloured scanning electron micrograph (SEM) of pollen (pink) on the stamen of a geranium flower (Geranium sp.)

Geranium pollen, SEM C015 / 9157
Geranium pollen. Coloured scanning electron micrograph (SEM) of pollen (pink) on the stamen of a geranium flower (Geranium sp.)

Geranium pollen, SEM C015 / 9158
Geranium pollen. Coloured scanning electron micrograph (SEM) of a pollen grain (pink) on the stamen of a geranium flower (Geranium sp.)

Sunflower pollen grain, SEM C018 / 0310
Sunflower pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from the sunflower (Helianthus annuus)

Iris pollen grains, SEM C018 / 0426
Iris pollen grains, coloured scanning electron micrograph (SEM). Pollen grains, containing the male sex cells (gametes), are reproductive structures produced by the male parts of flowering plants

Willow pollen grain, SEM C018 / 0425
Willow pollen grain, coloured scanning electron micrograph (SEM). Pollen grains, containing the male sex cells (gametes), are reproductive structures produced by the male parts of flowering plants

Sunflower pollen grains, SEM C018 / 0309
Sunflower pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from the sunflower (Helianthus annuus)

Iris pollen grains, SEM C018 / 0428
Iris pollen grains, coloured scanning electron micrograph (SEM). Pollen grains, containing the male sex cells (gametes), are reproductive structures produced by the male parts of flowering plants

Pollen cell structures, artwork
Pollen cell structures. Pollen grains are the male reproductive structures produced by flowering plants. They have a double wall (intine and exine)

Pollen grains, artwork
Pollen grains. Artwork of pollen grains from different flowers. The outer wall (exine) of each pollen grain is highly sculpted to aid their dispersal

Scots pine pollen, SEM
Scots pine pollen. Coloured scanning electron micrograph (SEM) of Scots pine (Pinus sylvestris) pollen grains. The pollen grains consist of a base (orange) with two air-filled

Marrow pollen grain, SEM
Marrow (Cucurbita sp.) pollen grain, scanning electron micrograph (SEM). The grain has a spiked outer wall (exine), which may assist in its dispersal by improving its adherence to pollinating

Daffodil pollen, SEM
Daffodil pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a daffodil flower (Narcissus pseudonarcissus)

Arnica pollen grain, SEM
Arnica pollen grain. Coloured scanning electron micrograph (SEM) of a chamisso arnica (Arnica chamissonis) plants pollen grain

Maize pollen grain, SEM
Pollen grain. Coloured scanning electron micrograph (SEM) of a maize plant pollen grain (Zea mays). There is great variation in the size, shape and surface texture of pollen

Bindweed pollen grains, SEM
Pollen grains. Coloured scanning electron micrograph (SEM) of bindweed (Calystegia sepium) pollen grains (blue). There is great variation in the size, shape and surface texture of pollen

Forget-me-not pollen, SEM
Pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from a forget- me-not plant (Myosotis sp.). This is among the smallest of any plant pollen

Tricolporate pollen of rose flower
Rose pollen. Coloured scanning electron micrograph (SEM) of tricolporate pollen grains of a Garden Rose, Rosa sp. Pollen grains are the male sexual spores that are discharged from the male part of

Chinese hibiscus pollen, SEM
Chinese hibiscus pollen. Coloured scanning electron micrograph (SEM) of a pollen grain from a Chinese hibiscus (Hibiscus rosa-sinensis) flower

Bellflower pollen, SEM
Bellflower pollen. Coloured scanning electron micrograph (SEM) of pollen grains from a bellflower (Campanula sp.). Pollen grains are the male gametes (sex cells) of a plant

Climbing lily pollen, SEM
Climbing lily pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from the climbing lily flower (Gloriosa superba)

Horse chestnut pollen, SEM
Horse chestnut pollen grain. Coloured scanning electron micrograph (SEM) of a pollen grain from a flowering horse chestnut tree (Aesculus hippocastanum)

Passion flower pollen, SEM
Passion flower pollen. Coloured scanning electron micrograph (SEM) of pollen grains from a passion flower (Passiflora caerulea). Pollen grains are the male gametes (sex cells) of a plant

Dandelion pollen, SEM
Dandelion (Taraxacum officinale) pollen. Coloured scanning electron micrograph (SEM) showing pollen grains (round) on the anther of a dandelion flower

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Exine: A Fascinating World Unveiled Through SEM Delicate and intricate, the exine of pollen grains holds secrets waiting to be discovered. SEM (Scanning Electron Microscopy) allows us to explore this captivating microcosm, revealing stunning details that often go unnoticed by the naked eye. Passion flower pollen, under the watchful lens of SEM, showcases its unique beauty. Its exine exhibits a complex pattern resembling an artistic masterpiece, capturing our attention with its mesmerizing intricacy. Dandelion pollen grain reveals a different story altogether. Its exine appears smooth and spherical, hinting at its ability to travel long distances through wind dispersal mechanisms. Philadelphia fleabane pollen grains showcase their distinct shape and texture under SEM's magnification. With their spiky exines resembling tiny medieval maces, these grains are designed for efficient pollination in their natural habitat. A Lily pollen grain delicately rests on a rosemary leaf as we delve into another fascinating world through SEM. The exine displays ornate sculptural features that aid in attracting specific pollinators towards this enchanting bloom. Forsythia pollen grains captivate us with their vibrant yellow coloration when viewed through SEM. Their textured exines seem like miniature landscapes adorned with intricate ridges and valleys – nature's artistry at its finest. Chickweed pollen grains reveal a more simplistic yet elegant design under the scrutiny of SEM. Their smooth and rounded exines suggest adaptation for effective pollination within their environment. Flame lily pollen takes center stage as we zoom in closer using SEM technology. Its striking red hue contrasts against other floral pigments while its meticulously sculpted exine adds an extra layer of allure to this exotic specimen. Hellebore pollen offers a glimpse into an entirely different realm within the microscopic universe captured by SEM imagery. Its finely detailed reticulate structure showcases nature's ingenuity in ensuring successful pollination.