On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 1
... early as June or July , and in some even a year and a half in advance . The protection of the buds is therefore one of the most important requisites in plant lite - in cold countries against frost , in hot against the sun . During ...
... early as June or July , and in some even a year and a half in advance . The protection of the buds is therefore one of the most important requisites in plant lite - in cold countries against frost , in hot against the sun . During ...
Pagina 9
... early . Fig . 10 represents a twig of Lime drawn at the end of May ; the terminal shoot and stipules ( St ) are very small , and easily drop off . If a branch be examined a little later , it will be found to be terminated by a scar ...
... early . Fig . 10 represents a twig of Lime drawn at the end of May ; the terminal shoot and stipules ( St ) are very small , and easily drop off . If a branch be examined a little later , it will be found to be terminated by a scar ...
Pagina 14
... early develop- ment of the petiole . The young stages in the develop- ment of the leaf are shown in figs . 17 and 18 . Here it seems obvious that the peculiar form of the leaf is due to the form and arrangement of the 14 BUDS AND STIPULES.
... early develop- ment of the petiole . The young stages in the develop- ment of the leaf are shown in figs . 17 and 18 . Here it seems obvious that the peculiar form of the leaf is due to the form and arrangement of the 14 BUDS AND STIPULES.
Pagina 15
... early state . Or take , again , the case of the Oak and Beech . Both have a conical bud , and the young leaves are protected by stipules . I shall presently refer to them again from this point of view . For the moment I am dealing 1 ...
... early state . Or take , again , the case of the Oak and Beech . Both have a conical bud , and the young leaves are protected by stipules . I shall presently refer to them again from this point of view . For the moment I am dealing 1 ...
Pagina 31
... early , so that the leaves at this stage lie between two rows of stipules . In Sainfoin ( Onobrychis sativa ) ( figs . 43 , 44 ) also the stipules are united for the greater part of their length . In other species they are ...
... early , so that the leaves at this stage lie between two rows of stipules . In Sainfoin ( Onobrychis sativa ) ( figs . 43 , 44 ) also the stipules are united for the greater part of their length . In other species they are ...
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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...