On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 2
... seen that the outer ( lower ) leaf , which had only a single covering , has been killed by frost , while the suc- ceeding one , which had two wraps , has escaped . It is remarkable that some even in certain cases species of the same ...
... seen that the outer ( lower ) leaf , which had only a single covering , has been killed by frost , while the suc- ceeding one , which had two wraps , has escaped . It is remarkable that some even in certain cases species of the same ...
Pagina 3
... seen from above . B , shoot seen from one side . Reduced . growing or natives of tropical countries , the buds are comparatively naked and unprotected . Even in the tropics , however , though protection is not needed against cold , it ...
... seen from above . B , shoot seen from one side . Reduced . growing or natives of tropical countries , the buds are comparatively naked and unprotected . Even in the tropics , however , though protection is not needed against cold , it ...
Pagina 4
... seen from the side . FIG . 4 , with one leaf turned back to show the younger , enclosed pair ( B ) . ment well , as the leaves are often drawn to one side or the other by the light . But Mr. Potter , who has had the opportunity of ...
... seen from the side . FIG . 4 , with one leaf turned back to show the younger , enclosed pair ( B ) . ment well , as the leaves are often drawn to one side or the other by the light . But Mr. Potter , who has had the opportunity of ...
Pagina 12
... seen , are kid- ney - shaped ; those of the Wall- flower are racket - shaped , as in fig . 15. At first this seems a FLOWER . Two thirds nat . difficulty ; but on looking closer the difficulty vanishes , for while the cotyledons of the ...
... seen , are kid- ney - shaped ; those of the Wall- flower are racket - shaped , as in fig . 15. At first this seems a FLOWER . Two thirds nat . difficulty ; but on looking closer the difficulty vanishes , for while the cotyledons of the ...
Pagina 15
... seen a 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 8 . St 5 7 3 A C FIG . 18. - ARRANGEMENT OF YOUNG ...
... seen a 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 8 . St 5 7 3 A C FIG . 18. - ARRANGEMENT OF YOUNG ...
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Termeni și expresii frecvente
apex axil axillary buds axis base Beech Bentham blade brown Bud Protection bud-scales Candolle completely covered concave conduplicate connate stipules cotyledons developed edges exstipulate fifth folded foliaceous genera genus glabrous glands growing-point growth Guaiacum officinale hairs hairy Helianthemum Hornbeam Horse Chestnut Hypericum calycinum Illustrations inner instance lamina Lantana lateral buds Lathyrus 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 showing side slightly sometimes species St FIG st st stalk stem stipular stipules belonging stipules fig stipules St subulate tendrils terminal bud triangular Tulip Tree upper Viburnum Viburnum Lantana Viburnum Opulus Whitebeam winter winter-bud Wych Elm young bud young leaves Young Shoot younger
Pasaje populare
Pagina 191 - The acacia, however, bears hollow thorns, while each leaflet produces honey in a craterformed gland at the base, and a small, sweet, pearshaped body at the tip. In consequence, it is inhabited by myriads of a small ant, which nests in the hollow thorns, and thus finds meat, drink, and lodging all provided for it. These ants are continually roaming over the plant, and constitute a most efficient body-guard, not only driving off the leaf-cutting ants, but, in Belt's opinion, rendering the leaves less...
Pagina 233 - ... the presence, the uses, and the forms of stipules, and the structure of buds in some of our common trees, shrubs, and herbs. If I shall have induced any of my readers to look at them for themselves in the coming spring they will, I am sure, be amply rewarded. They will often be reminded of Tennyson's profound remark about Nature : So careless of the single life, So careful of the type she seems...
Pagina 68 - Plants, p. 286. -purpwrea, which naturally sink at night (the plants growing out of doors), and looked at them early on several successive mornings, after they had assumed their diurnal positions. The difference in the amount of dew on the pinned-open leaflets and on those which had gone to sleep was generally conspicuous, the latter being sometimes absolutely dry. whilst the leaflets which had been horizontal were coated with large beads of dew. This shows how much cooler the leaflets fully exposed...