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 blade brown bud is protected bud-scales Candolle completely covered concave conduplicate connate stipules cotyledons developed edges Edition Exochorda exstipulate fifth folded foliaceous fourth genera genus glabrous glands growing-point growth Guaiacum officinale hairs hairy Helianthemum Hornbeam Horse Chestnut inner instance lamina Lantana lateral buds 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 shoot showing side slightly Smilax sometimes species St FIG St St stalk stem stipular stipules belonging stipules fig stipules St subulate tendrils terminal bud trees triangular Tulip Tree upper Viburnum Viburnum Lantana Viburnum Opulus Whitebeam winter winter-bud Wych Elm young bud young leaves younger
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Pagina 233 - So careless of the single life, So careful of the type she seems, and will be more and more struck with wonder and admiration at the variety and beauty of the provisions by which Nature preserves these tender and precious buds from the severity of winter, and prepares with loving care and rich profusion for the bright promise of spring and the glorious pageant of summer.
Pagina 194 - ASSISTANCE IN CLIMBING There are two ways in which stipules may assist in this respect, viz. (1) by being developed into tendrils, or (2) into more or less reversed spines. The case of the tendrils of Smilax is one which has occasioned much discussion, but I agree with Tyler (24) that the embryological, together with the anatomical, characters indicate that in Smilax the tendrils are true stipules, found in connection with the sheathing petiole. In Paliurvs australis (fig.
Pagina 4 - The figure also shows how admirably the peculiar form of the leaf is adapted to their mode of growth. In many other plants also the leaves, as they develop, successively protect the younger ones. A somewhat similar case is afforded by Uvaria (figs. 105, 106, p. 70) ; and also by common Rhubarb, FIG.