On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 9
... true terminal bud , which has dropped away , so that the one which is apparently terminal is really axil- lary .. Fig . 11 represents the end of a shoot of Hornbeam ( Carpinus Betulus ) , taken in July , and shows how snugly the bud ...
... true terminal bud , which has dropped away , so that the one which is apparently terminal is really axil- lary .. Fig . 11 represents the end of a shoot of Hornbeam ( Carpinus Betulus ) , taken in July , and shows how snugly the bud ...
Pagina 10
... true leaves . They offer an immense variety of form ; not quite so innumerable , indeed , as those of true leaves , of which Linnæus truly observed ' that ' Natura in nullâ parte magis fuit polymorpha quam in foliis , ' but still ...
... true leaves . They offer an immense variety of form ; not quite so innumerable , indeed , as those of true leaves , of which Linnæus truly observed ' that ' Natura in nullâ parte magis fuit polymorpha quam in foliis , ' but still ...
Pagina 40
... true leaves follow the scales abruptly . Another very interesting case is that of Viburnum . ' We have in this country two wild species of this genus - one , Viburnum Lantana ( usually known as the Wayfaring Tree ) ( fig . 55 ) ; the ...
... true leaves follow the scales abruptly . Another very interesting case is that of Viburnum . ' We have in this country two wild species of this genus - one , Viburnum Lantana ( usually known as the Wayfaring Tree ) ( fig . 55 ) ; the ...
Pagina 44
... true leaves should be folded , because they thus occupy less space . This , perhaps , accounts for the folding of the L St leaves of V. Opulus in the bud , while the lobes follow from the mode in which the leaves are folded . Now a leaf ...
... true leaves should be folded , because they thus occupy less space . This , perhaps , accounts for the folding of the L St leaves of V. Opulus in the bud , while the lobes follow from the mode in which the leaves are folded . Now a leaf ...
Pagina 54
... true petiole is the leaf - stalk above the stipules . The winged part below is really a develop- ment of the leaf - base . Adnate stipules , as these are called , arising from a similar development of the leaf - base , occur in many Sc4 ...
... true petiole is the leaf - stalk above the stipules . The winged part below is really a develop- ment of the leaf - base . Adnate stipules , as these are called , arising from a similar development of the leaf - base , occur in many Sc4 ...
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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.