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FLOWERS AND FRUITS
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A. Microspore development in Lilium |
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Lilium, anther l.s. for general study
Lilium, anther t.s. for general study showing pollen chambers and pollen grains
Lilium, anther t.s., binucleate mature pollen grains at the time of shedding with tube cell and generative cell
Lilium, anther t.s., early prophase for general study
Lilium, anther t.s., late prophase for general study
Lilium, anther t.s., microspore mother cells in diakinesis
Lilium, anther t.s., microspore mother cells in diplotene
Lilium, anther t.s., microspore mother cells in leptotene
Lilium, anther t.s., microspore mother cells in pachytene
Lilium, anther t.s., microspore mother cells in tetrad stage
Lilium, anther t.s., microspore mother cells in zygotene
Lilium, anther t.s., microspore mother cells showing metaphase and anaphase of first (heterotypic) division (meiosis)
Lilium, anther t.s., microspore mother cells showing metaphase and anaphase of second (homeotypic) division (mitosis)
Lilium, anther t.s., microspore mother cells showing telophase of first and prophase of second (homeotypic) division
Lilium, anther t.s., third division +
Lilium, anther t.s., uninucleate (haploid) microspores after the separation of the daughter cells
Lilium, anther t.s., very young with microspore mother cells and tapetal layers |
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B. Pollen types |
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Ambrosia, ragweed, pollen grains w.m.
Corylus, hazel, pollen grains w.m.
Helianthus and Cucurbita, pollen grains w.m.
Helianthus, sunrose, pollen grains w.m.
Lilium, mature pollen grains w.m.
Mixed pollen types, showing various forms of many different species
Oenothera, pollen w.m. showing viscin filaments
Tulipa, anthers with pollen and pollen chambers t.s. |
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C. Fertilization |
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Fritillaria, nectary with glands t.s.
Lilium, germinating pollen grains with pollen tubes w.m.
Lilium, l.s. through pistil and stigma with pollen and pollen tubes
Lilium, t.s. of stigma before pollination
Oenothera, evening primrose, stigma with pollen grains and pollen tubes l.s
Stigma of Eschscholtzia, l.s. showing penetrating pollen
Stigma of Eschscholtzia, w.m. showing penetrating pollen
Vicia, bean, stigma and anthers, w.m. |
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D. Megaspore development in Lilium |
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Lilium, ovary t.s., binucleate embryosac
Lilium, ovary t.s., eight-nucleate embryosac showing all the nuclei in one or more serial sections
Lilium, ovary t.s., embryosac showing double fertilization in one or more serial sections
Lilium, ovary t.s., first four-nucleate stage
Lilium, ovary t.s., second four-nucleate stage, a vacuole can be seen between the nuclei
Lilium, ovary t.s., showing fourth division
Lilium, ovary t.s., showing migration of 3 nuclei to the chalazal end of the embryosac while 1 nucleus remains in the micropylar end
Lilium, ovary t.s., showing second (homeotypic) division with two division figures
Lilium, ovary t.s., showing the stage of eight-nucleate embryosac for general study, not all nuclei present
Lilium, ovary t.s., showing third division after the three chalazal nuclei have fused
Lilium, ovary t.s., showing uninucleate embryosac with megaspore mother cell
Lilium, ovary t.s., uninucleate embryosac with first (heterotypic) division of megaspore mother cell
Lilium, ovary t.s., very young, shows developing tissue before the formation of the megaspore mother cell. Obvious abundant mitotic figures
Lilium, ovary t.s., with megaspore mother cell |
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| E. Ovaries, formation of ovules and embryos (monocot) |
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Epipactis, orchid, ovary with ovules t.s.
Fritillaria, fritillary, ovary with embryosac t.s.
Hyacinthus, ovary t.s.
Iris, t.s. of ovary showing arrangement of ovules
Iris, t.s. of ovary showing later stage of embryo and endosperm
Lilium, ovary l.s., showing arrangement of ovules and all structures
Lilium, ovary t.s., early embryonic stage
Lilium, ovary t.s., mature seed with embryo and endosperm
Lilium, ovary t.s., showing arrangement of ovules and all structures for general study
Lilium. ovary t.s., mature embryo
Ovary types, composite slide with four t.s. through various typical types of ovaries
Ovary, t.s. showing anatropic attachment of ovules
Ovary, t.s. showing kampylotropic attachment of ovules
Ovary, t.s. showing orthotropic attachment of ovules
Tulipa, l.s. of ovary showing arrangement of ovules
Tulipa, l.s. of ovary showing development of embryos
Tulipa, tulip, t.s. of ovary showing arrangement of ovules and all structures for general study |
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| F. Ovaries, formation of ovules and embryos (dicot) |
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Capsella bursa pastoris, shepherd's purse, l.s. of ovule with embryos in situ for general study
Capsella, l.s. of embryo in early cotyledon stage
Capsella, l.s. of embryo in later cotyledon stage
Capsella, l.s. of embryo in precotyledon stage
Capsella, l.s. of embryo with curving cotyledons (mature)
Helleborus, l.s. of atrope ovary
Hyoscyamus, t.s. of older ovary
Hyoscyamus, t.s. of young ovary
Impatiens, t.s. of ovary
Lathraea, t.s. of elder ovary
Lathraea, t.s. of young ovary
Lathraea, toothwort, ovary of a parasitic plant t.s.
Monotropa, Indian pipe, ovary t.s. with developing embryosacs
Rosa , rose, ovary t.s.
Solanum, potato, t.s. of ovary with formation of embryos |
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| G. Flowers and floral diagrams (monocot) |
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Monocot and dicot flower buds t.s. on same slide for comparison
Lilium candidum, lily, t.s. of flower bud showing floral diagram of a monocot
Lilium, l.s. of flower bud
Galanthus, snowdrop, t.s. of flower
Secale, rye, t.s. of a typical gramineous flower
Zea, t.s. of male flower
Anthurium, flamingo plant, pedicel with flowers t.s.
Arum maculatum, cuckoopint, l.s. of flower, insect trap
Arum maculatum, t.s. of flower bud showing ovary |
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| H. Flowers and floral diagrams (dicot) |
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Bellis, l.s. of a composite flower bud
Caltha palustris, l.s. of flower
Cheirantus, wallflower, t.s. of flower bud with marginal-parietale placentation
Corylus avellana, diclinous female flower l.s.
Corylus avellana, hazel, diclinous male flower l.s.
Cucurbita, pumpkin, t.s. of female flower
Linum, flax, t.s. of flower
Lycopersicum, l.s. of flower bud
Lycopersicum, tomato, t.s. of flower bud shows floral diagram and axile placentation
Magnolia, t.s. of flower bud showing anthers with microspore mother cells
Papaver, poppy, t.s. of flower shows parietal placentation
Papaver, poppy, t.s. of older flower, formation of embryos
Primula, primose, t.s. of flower
Prunus avium, cherry, flower bud with perigynous ovary l.s.
Pyrus malus, apple, flower bud with hypogynous ovary l.s.
Ranunculus, buttercup, l.s. of flower
Ribes, currant, l.s. of flower bud
Senecio, t.s. of a composite flower
Solanum tuberosum, potato, t.s. flower bud for floral diagram
Taraxacum, dandelion, l.s. of composite flower with tubular florets and ligulate florets
Taraxacum, t.s. of composite flower
Triticum , wheat, grain l.s. showing embryo |
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| I. Simple fruits |
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Aesculus hippocastanum, chestnut, young fruit l.s.
Citrus, lemon, young fruit t.s.
Cocos nucifera, coconut, endosperm t.s.
Corylus avellana, hazelnut, young stone fruit t.s.
Cruzifera sp., mustard or other, t.s. of silique with seed
Iris, t.s. of mature seed
Juglans regia, walnut, young drupe (stone fruit) t.s.
Lycopersicum, tomato, young fruit t.s.
Prunus domestica, plum, young drupe (stone fruit) t.s. |
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| J. Aggregate fruits |
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Ficus carica, fig, young fruit t.s.
Fragaria, strawberry, young aggregate fruit l.s.
Morus, mulberry, young multiple fruit l.s.
Pyrus malus, apple, young pome t.s., a fleshy, many seeded fruit
Ranunculus, l.s. of fruit
Ranunculus, t.s. of fruit
Ribes, l.s. of a simple berry fruit
Rosa , syncarpous fruit l.s.
Rubus idaeus, raspberry, young aggregate fruit l.s. |
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| K. Seeds |
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Amygdalus, almond, endosperm t.s.
Ananas comosus, sec.
Asparagus, t.s. of seed
Cuscuta chinensis, t.s.
Helianthus, sunflower, t.s. of achene fruit
Hyacinthus, mature seed t.s.
Juglans, walnut, mesocarp with stone cells t.s.
Lycopersicon esculentum, sec.
Myristica, nutmeg, endosperm t.s.
Phaseolus, bean, t.s. of pod showing pericarp and seed
Pinus tabulaeformis, l.s.
Populus, poplar, hairs from seed w.m.
Ricinus, t.s. of seed showing aleurone grains in endosperm with cotyledons
Sapium sebiferum, l.s.
Secale, rye, grain (seed) t.s.
Solanum tuberosum, l.s.
Triticum, grain (seed), sagittal l.s. showing embryo and endosperm
Triticum, wheat, grain (seed), t.s. showing embryo and endosperm
Tropaeolum, nasturtium. semen (seed) t.s.
Zea mays or Triticum, germinating seed l.s.
Zea mays, corn, grain (seed) l.s. showing embryo and endosperm
Zea mays, young corn cob t.s. |
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