On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 9
... petiole of the leaf . p . - S P , upper part having been cut off ; b , bud ; t , terminal shoot , the upper part has already dropped off ; s , scar of stipule . The same thing occurs in the Elm , Birch , Hazel - Nut , Lilac , Willow ...
... petiole of the leaf . p . - S P , upper part having been cut off ; b , bud ; t , terminal shoot , the upper part has already dropped off ; s , scar of stipule . The same thing occurs in the Elm , Birch , Hazel - Nut , Lilac , Willow ...
Pagina 14
... petiole . The young stages in the develop- ment of the leaf are shown in figs . 17 and 18 . YOUNG LEAF OF LIRIODENDRON . Here it seems obvious that the peculiar form of the leaf is due to the form and arrangement of the 14 BUDS AND ...
... petiole . The young stages in the develop- ment of the leaf are shown in figs . 17 and 18 . YOUNG LEAF OF LIRIODENDRON . Here it seems obvious that the peculiar form of the leaf is due to the form and arrangement of the 14 BUDS AND ...
Pagina 30
... petiole . St ···す st FIG . 39 . FIG . 40 . PORTION OF SHOOT OF ASTRAGALUS CHINENSIS , showing stipules ( St ) connate at the base . Nat.size . FIG . 39. - Front view . FIG . 40. - Side view . Two leaflets of the compound leaf are showu ...
... petiole . St ···す st FIG . 39 . FIG . 40 . PORTION OF SHOOT OF ASTRAGALUS CHINENSIS , showing stipules ( St ) connate at the base . Nat.size . FIG . 39. - Front view . FIG . 40. - Side view . Two leaflets of the compound leaf are showu ...
Pagina 36
... Rock Roses ( Helianthemum ) are concerned . Let us now see whether the conformation of other species supports this view . In the allied genus Cistus , which has no stipules , the petiole is always widened 36 BUDS AND STIPULES.
... Rock Roses ( Helianthemum ) are concerned . Let us now see whether the conformation of other species supports this view . In the allied genus Cistus , which has no stipules , the petiole is always widened 36 BUDS AND STIPULES.
Pagina 37
Sir John Lubbock. which has no stipules , the petiole is always widened as in the species of Helianthemum without stipules . This is shown , for instance , in the following figure of Cistus cyprius ( fig . 49 ) . In Cistus vaginatus ...
Sir John Lubbock. which has no stipules , the petiole is always widened as in the species of Helianthemum without stipules . This is shown , for instance , in the following figure of Cistus cyprius ( fig . 49 ) . In Cistus vaginatus ...
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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.