On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 133
... regarded as giving the average composition of the winter or resting bud of the Beech . Larger buds have a greater number of leaves and stipules ; smaller buds , fewer . Strong shoots on vigorous young trees have more leaves , though the ...
... regarded as giving the average composition of the winter or resting bud of the Beech . Larger buds have a greater number of leaves and stipules ; smaller buds , fewer . Strong shoots on vigorous young trees have more leaves , though the ...
Pagina 190
... regarded the spines of the Orange as stipules , but they are now regarded , no doubt with reason , as aborted branches ( 19,1 ) . Stipules in the form of spines also occur in Ribes oxyacanthoides , some species of Bauhinia ( B ...
... regarded the spines of the Orange as stipules , but they are now regarded , no doubt with reason , as aborted branches ( 19,1 ) . Stipules in the form of spines also occur in Ribes oxyacanthoides , some species of Bauhinia ( B ...
Pagina 202
... regarded by some botanists as stipules , while this has been denied by others ; and the same difference of opinion has existed with reference to the ligule of grasses . I shall presently return to some of these doubtful cases ...
... regarded by some botanists as stipules , while this has been denied by others ; and the same difference of opinion has existed with reference to the ligule of grasses . I shall presently return to some of these doubtful cases ...
Pagina 204
... regarded by Cauvet ( 30 ) , and I think with justice , as a stipule . Colomb ques- tions this , on the ground that these processes receive no nerves . As already mentioned , however , this does not seem to me a sufficient reason for ...
... regarded by Cauvet ( 30 ) , and I think with justice , as a stipule . Colomb ques- tions this , on the ground that these processes receive no nerves . As already mentioned , however , this does not seem to me a sufficient reason for ...
Pagina 206
... regarded stipules as autonomous organs , analogous to and independent of the leaf . Steinheil ( 4 ) maintained that each lobe was virtually a leaflet , and even a leaf . Turpin's opinion was that ' Les stipules caulinaires sont des ...
... regarded stipules as autonomous organs , analogous to and independent of the leaf . Steinheil ( 4 ) maintained that each lobe was virtually a leaflet , and even a leaf . Turpin's opinion was that ' Les stipules caulinaires sont des ...
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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...