On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina viii
Sir John Lubbock. CHAPTER III ON THE DEVELOPMENT OF LEAVES AND STIPULES Origin of Leaves ... Leaf - base , by Modified Leaves , by Leaf - stalk , by Stipules , by ... blade : Lilac , Holly , Willow , Viburnum ( Guelder Rose ) -Protection by ...
Sir John Lubbock. CHAPTER III ON THE DEVELOPMENT OF LEAVES AND STIPULES Origin of Leaves ... Leaf - base , by Modified Leaves , by Leaf - stalk , by Stipules , by ... blade : Lilac , Holly , Willow , Viburnum ( Guelder Rose ) -Protection by ...
Pagina ix
... Leaf : Leaf - base with Stipules ; Leaf - stalk with Leaf - blade or Leaflets - Complete and Incomplete Leaves- Gradations in Development of Stipules : Parsley , Ostru- thium , Ethusa - Difficult Cases Hypericum , Lotus , Cucumber ...
... Leaf : Leaf - base with Stipules ; Leaf - stalk with Leaf - blade or Leaflets - Complete and Incomplete Leaves- Gradations in Development of Stipules : Parsley , Ostru- thium , Ethusa - Difficult Cases Hypericum , Lotus , Cucumber ...
Pagina 28
... leaf and protect the next succeeding bud , as , for instance , in Petteria ( figs . 35 , 36 ) ; or they may last ... blade , which drops off in autumn , while they retain their place and protect the young bud through the winter . When ...
... leaf and protect the next succeeding bud , as , for instance , in Petteria ( figs . 35 , 36 ) ; or they may last ... blade , which drops off in autumn , while they retain their place and protect the young bud through the winter . When ...
Pagina 29
... leaf terminating each year's growth is small , and eventually the blade becomes disarticulated just above the stipules , which are adnate to the leaf - base and enclose the bud ( fig . 38 ) . These stipules are in this species the only ...
... leaf terminating each year's growth is small , and eventually the blade becomes disarticulated just above the stipules , which are adnate to the leaf - base and enclose the bud ( fig . 38 ) . These stipules are in this species the only ...
Pagina 50
... leaf - blade has reachedth inch ( fig . 67 ) the stipules have caught it up . They are more oval , more pointed , and bordered by a row of small projections . They continue to grow ( fig . 68 ) more rapidly than the leaf - blade , and ...
... leaf - blade has reachedth inch ( fig . 67 ) the stipules have caught it up . They are more oval , more pointed , and bordered by a row of small projections . They continue to grow ( fig . 68 ) more rapidly than the leaf - blade , and ...
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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.