Flowers, Fruits and LeavesMacmillan, 1886 - 147 páginas |
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Página 22
... attached close together at the sum- mit of the filament , are separated by a long movable rod , or connective ( Figs . 17 , 18 , m ) , so that they can play freely on the stalk of the stamen . In a natural position , this connective is ...
... attached close together at the sum- mit of the filament , are separated by a long movable rod , or connective ( Figs . 17 , 18 , m ) , so that they can play freely on the stalk of the stamen . In a natural position , this connective is ...
Página 53
... attached to the central piece by short stalks . Now , when the proper moment has arrived , the outer walls are kept in place by a delicate membrane , only just strong enough to resist the tension . The least touch , for instance , a ...
... attached to the central piece by short stalks . Now , when the proper moment has arrived , the outer walls are kept in place by a delicate membrane , only just strong enough to resist the tension . The least touch , for instance , a ...
Página 59
... attached to the rod ; d , the seed . some species , as for instance in Geranium dissectum , Fig . 42 , the capsule - rod remains attached to the central column and the seed only is ejected . It will , however , be remembered that the ...
... attached to the rod ; d , the seed . some species , as for instance in Geranium dissectum , Fig . 42 , the capsule - rod remains attached to the central column and the seed only is ejected . It will , however , be remembered that the ...
Página 60
... attached , however , to the central pillar by their upper ends ( Fig . 42 , c ) . In the common Herb Robert ( Fig . 43 ) , and some other species , the arrangement is somewhat different . In the first place the whole carpel springs away ...
... attached , however , to the central pillar by their upper ends ( Fig . 42 , c ) . In the common Herb Robert ( Fig . 43 ) , and some other species , the arrangement is somewhat different . In the first place the whole carpel springs away ...
Página 63
... attached to the stalk . If any one touches one of these ripe fruits , they are often thrown with such force as to strike him in the face . In Cyclanthera , a plant allied to the Cucumber , the fruit is unsymmetrical , one side being ...
... attached to the stalk . If any one touches one of these ripe fruits , they are often thrown with such force as to strike him in the face . In Cyclanthera , a plant allied to the Cucumber , the fruit is unsymmetrical , one side being ...
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Términos y frases comunes
Acacia advantage Agrimony allied animals anthers ants arrangement Beech bees belong branch canina capsule Cardamine carpel CHAP close colour common contrary corolla Crown 8vo curious Darwin Deadnettle dispersion distance Ditto Drosera Drosera rotundifolia edible Epilobium fertilised fertilised by insects flattened fleshy florets flower-head flowers Fritz Müller fruits genera genus Geranium Geranium dissectum Grant Allen ground grow Herb Herb Robert Hibiscus pedunculatus hirta honey hooks Hornbeam Horse Chestnut Illustrations inches insects instance internodes keel Lamium large number Lathyrus leaf-stalk leaflets leaves less light Lime lobed Maple maturity Moreover nearly observed ovary palmate perhaps petals pinnate pistil plants pods pollen Poplar produced protected resemblance ripe ripen scent Seedling seeds Senecio sepals small insects Spanish Chestnut species SQUIRTING CUCUMBER stalk stamens stamens and pistil stem stigma stomata surface Sycamore Thrincia throw trees tube upper Viola canina visited by insects wasp wind wings
Pasajes populares
Página 98 - But the leaves of the herbage at our feet take all kinds of strange shapes, as if to invite us to examine them. Starshaped, heart-shaped, spear-shaped, arrow-shaped, fretted, fringed, cleft, furrowed, serrated, sinuated; in whorls, in tufts, in spires, in wreaths endlessly expressive, deceptive, fantastic, never the same from footstalk to blossom ; they seem perpetually to tempt our watchfulness, and take delight in outstripping our wonder.
Página 117 - Here in the houseless wild, to direct the traveller's journey Over the sea-like, pathless, limitless waste of the desert.
Página 97 - Flowers seem intended for the solace of ordinary humanity : children love them ; quiet, tender, contented ordinary people love them as they grow; luxurious and disorderly people rejoice in them gathered : They are the cottager's treasure ; and in the crowded town, mark, as with a little...
Página 98 - Now. why is this marvellous variety, this inexhaustible treasury of beautiful forms ? Does it result from some innate tendency of each species? Is it intentionally designed to delight the eye of man ? Or has the form and size and texture some reference to the structure and organization, the habits and requirements, of the whole plant...
Página 3 - ... unknown until Mr. Darwin devoted himself to the subject. Our illustrious countryman was the first clearly to perceive that the essential service which insects perform to flowers, consists not only in transferring the pollen from the stamens to the pistil, but in transferring it from the stamens of one flower to the pistil of another. Sprengel had indeed observed in more than one instance that this was the case, but he did not altogether appreciate the importance of the fact. Mr. Darwin, however,...