On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 1
... from insects and browsing quadrupeds by gummy or resinous secretions . The bud is a short shoot bearing a number of young leaves closely packed together . There is generally one B at the summit of each twig and in the axil CHAPTER I ON ...
... from insects and browsing quadrupeds by gummy or resinous secretions . The bud is a short shoot bearing a number of young leaves closely packed together . There is generally one B at the summit of each twig and in the axil CHAPTER I ON ...
Pagina 15
... short and incorrect abstract , and not having taken the trouble to refer to the original paper , he mis- understood my view , as M. Devaux pointed out at the 6 .. B St 6 .. St 6 St 5 7 St 3 C FIG . 18. - ARRANGEMENT OF YOUNG LEAVES OF ...
... short and incorrect abstract , and not having taken the trouble to refer to the original paper , he mis- understood my view , as M. Devaux pointed out at the 6 .. B St 6 .. St 6 St 5 7 St 3 C FIG . 18. - ARRANGEMENT OF YOUNG LEAVES OF ...
Pagina 39
... . The petiole of the lower leaves also sometimes shows short teeth at its upper end , which also probably represent the last trace of stipules . Among the Magnoliacea , some genera have stipules , while ON STIPULES 39.
... . The petiole of the lower leaves also sometimes shows short teeth at its upper end , which also probably represent the last trace of stipules . Among the Magnoliacea , some genera have stipules , while ON STIPULES 39.
Pagina 46
... projection immediately below the growing - point of the shoot ( fig . 58 ) . It continues to grow at its apex for a short time only , its develop- ment being completed by growth in a zone of cells. 46 BUDS AND STIPULES.
... projection immediately below the growing - point of the shoot ( fig . 58 ) . It continues to grow at its apex for a short time only , its develop- ment being completed by growth in a zone of cells. 46 BUDS AND STIPULES.
Pagina 72
... short , subulate spines ; L ' , L ' , more perfect leaves on the same lateral shoot . erect , closely applied , and very short , but when fully developed they become hard , spiny , and diverging . Their foliar nature is further ...
... short , subulate spines ; L ' , L ' , more perfect leaves on the same lateral shoot . erect , closely applied , and very short , but when fully developed they become hard , spiny , and diverging . Their foliar nature is further ...
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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.