On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 10
... entire or much divided . Now , why should the first leaves differ so much from their successors ? The reason , I believe , is that while the forms of leaves often depend greatly on the Philosophia Botanica . buds , those of cotyledons ...
... entire or much divided . Now , why should the first leaves differ so much from their successors ? The reason , I believe , is that while the forms of leaves often depend greatly on the Philosophia Botanica . buds , those of cotyledons ...
Pagina 42
... entire , and more or less resembling those of V. Lantana . None of these possess stipules . The other six have lobed leaves , more or less like those of V. Opulus , and these all have stipuliform appendages , the existence of which ...
... entire , and more or less resembling those of V. Lantana . None of these possess stipules . The other six have lobed leaves , more or less like those of V. Opulus , and these all have stipuliform appendages , the existence of which ...
Pagina 43
... entire leaves , more or less oval or ovate . This would appear to be the form typical or original to the genus . Now let us suppose that , either from having extended northwards ( and both Viburnum Lantana and V. Opulus are among the ...
... entire leaves , more or less oval or ovate . This would appear to be the form typical or original to the genus . Now let us suppose that , either from having extended northwards ( and both Viburnum Lantana and V. Opulus are among the ...
Pagina 45
... entire , some with pinnate leaves ; while those of S. opulifolia , as the name denotes , closely resemble those of Viburnum Opulus . Now the entire- leaved species of Spiraa , like those of Viburnum , have no stipules ; while Spiraea ...
... entire , some with pinnate leaves ; while those of S. opulifolia , as the name denotes , closely resemble those of Viburnum Opulus . Now the entire- leaved species of Spiraa , like those of Viburnum , have no stipules ; while Spiraea ...
Pagina 65
... entire thallus of species of Laminaria , a common genus of brown sea- weed . Naumann ( 11 ) , on the contrary , maintains that the cells along the line of the fold detach themselves and diverge from one another . I believe , however ...
... entire thallus of species of Laminaria , a common genus of brown sea- weed . Naumann ( 11 ) , on the contrary , maintains that the cells along the line of the fold detach themselves and diverge from one another . I believe , however ...
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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.