On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina xiii
... Axillary Buds . 38 51-54 Leaves of Exochorda 39 55 Viburnum Lantana ( after Bentham ) 41 56 Viburnum Opulus ( after Bentham ) 41 57 Bud of Viburnum Opulus 44 58 Growing - point of Rose 59-63 Leaf Development in Aucuba japonica . 64-79 ...
... Axillary Buds . 38 51-54 Leaves of Exochorda 39 55 Viburnum Lantana ( after Bentham ) 41 56 Viburnum Opulus ( after Bentham ) 41 57 Bud of Viburnum Opulus 44 58 Growing - point of Rose 59-63 Leaf Development in Aucuba japonica . 64-79 ...
Pagina 2
... buds . Moreover , among our own species there is often a considerable difference be- tween terminal and axillary buds , as , for instance , in the Black Poplar ( Populus nigra ) . FIG . 1. - YOUNG SHOOT OF TULIP TREE ( Lirioden- dron ) ...
... buds . Moreover , among our own species there is often a considerable difference be- tween terminal and axillary buds , as , for instance , in the Black Poplar ( Populus nigra ) . FIG . 1. - YOUNG SHOOT OF TULIP TREE ( Lirioden- dron ) ...
Pagina 5
... axillary buds arise exactly at this place ; a , axis ; yl , next younger pair of leaves . where the delicate new leaves in the centre of the plant are protected by the large , horizontally spreading , older ones . Figs . 3 and 4 show ...
... axillary buds arise exactly at this place ; a , axis ; yl , next younger pair of leaves . where the delicate new leaves in the centre of the plant are protected by the large , horizontally spreading , older ones . Figs . 3 and 4 show ...
Pagina 8
... terminal bud ; B , axillary buds , the upper of which replaces the terminal bud on the fall of the latter . so that if we open a bud in the autumn we may find the rudiments not only of next year's leaves , but even of those of the ...
... terminal bud ; B , axillary buds , the upper of which replaces the terminal bud on the fall of the latter . so that if we open a bud in the autumn we may find the rudiments not only of next year's leaves , but even of those of the ...
Pagina 9
... bud situated apparently at the end of the branchlets is in reality axillary , as is shown by the presence of a ter- minal scar , due to the fall of the true terminal bud . I have found that even at the end of May the terminal buds of ...
... bud situated apparently at the end of the branchlets is in reality axillary , as is shown by the presence of a ter- minal scar , due to the fall of the true terminal bud . I have found that even at the end of May the terminal buds of ...
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Termeni și expresii frecvente
apex axil axillary buds axis base Beech Bentham blade brown Bud Protection bud-scales Candolle completely covered concave conduplicate connate stipules cotyledons developed edges exstipulate fifth folded foliaceous genera genus glabrous glands growing-point growth Guaiacum officinale hairs hairy Helianthemum Hornbeam Horse Chestnut Hypericum calycinum Illustrations inner instance lamina Lantana lateral buds Lathyrus Lathyrus Aphaca Lathyrus Nissolia leaf leaf-base leaf-blade leaf-stalk leaflets length less lobes lower membranous midrib Monocotyledons narrow node ocrea Opulus outer scales ovate pair of leaves pair of stipules pedestal persistent petiole Petteria PLANE Platanus plant Polygonum protect the bud protect the young Robinia scale fig scar sheath showing side slightly sometimes species St FIG st st stalk stem stipular stipules belonging stipules fig stipules St subulate tendrils terminal bud triangular Tulip Tree upper Viburnum Viburnum Lantana Viburnum Opulus Whitebeam winter winter-bud Wych Elm young bud young leaves Young Shoot younger
Pasaje populare
Pagina 191 - The acacia, however, bears hollow thorns, while each leaflet produces honey in a craterformed gland at the base, and a small, sweet, pearshaped body at the tip. In consequence, it is inhabited by myriads of a small ant, which nests in the hollow thorns, and thus finds meat, drink, and lodging all provided for it. These ants are continually roaming over the plant, and constitute a most efficient body-guard, not only driving off the leaf-cutting ants, but, in Belt's opinion, rendering the leaves less...
Pagina 233 - ... the presence, the uses, and the forms of stipules, and the structure of buds in some of our common trees, shrubs, and herbs. If I shall have induced any of my readers to look at them for themselves in the coming spring they will, I am sure, be amply rewarded. They will often be reminded of Tennyson's profound remark about Nature : So careless of the single life, So careful of the type she seems...
Pagina 68 - Plants, p. 286. -purpwrea, which naturally sink at night (the plants growing out of doors), and looked at them early on several successive mornings, after they had assumed their diurnal positions. The difference in the amount of dew on the pinned-open leaflets and on those which had gone to sleep was generally conspicuous, the latter being sometimes absolutely dry. whilst the leaflets which had been horizontal were coated with large beads of dew. This shows how much cooler the leaflets fully exposed...