On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 40
... consist of flattened petioles , with a membranous margin representing stipules , free only at the tip . The true leaves follow the scales abruptly . Another very interesting case is that of Viburnum.1 We have in this country two wild ...
... consist of flattened petioles , with a membranous margin representing stipules , free only at the tip . The true leaves follow the scales abruptly . Another very interesting case is that of Viburnum.1 We have in this country two wild ...
Pagina 84
... consist of stipules adnate to the base of the petiole . In Petteria ramentacea ( figs . 129 , 130 ) the stipules are at first small and obtuse . They have a covering of hair , and are axillary and slightly connate . The leaves are ...
... consist of stipules adnate to the base of the petiole . In Petteria ramentacea ( figs . 129 , 130 ) the stipules are at first small and obtuse . They have a covering of hair , and are axillary and slightly connate . The leaves are ...
Pagina 112
... consist of two leaves united ; its thickened edges and the strong , slightly branched nerve , easily seen on the inner face of these thickened edges , tend to support this view ; but no suture is discernible on the ante- rior face ...
... consist of two leaves united ; its thickened edges and the strong , slightly branched nerve , easily seen on the inner face of these thickened edges , tend to support this view ; but no suture is discernible on the ante- rior face ...
Pagina 139
... consist of a few pairs of stipules , the outer ones of which are comparatively large . These buds appear but seldom or ever to become developed into branches on the expansion of the primary bud , but remain small . Accidents to the ...
... consist of a few pairs of stipules , the outer ones of which are comparatively large . These buds appear but seldom or ever to become developed into branches on the expansion of the primary bud , but remain small . Accidents to the ...
Pagina 140
... consist of a leaf - blade connate with two stipules . The series given above in figs . 215-235 seems to me con- clusive against this view . WHITEBEAM ( Pyrus Aria ) The scales of the winter - bud ( fig . 236 ) of the Whitebeam ( Pyrus ...
... consist of a leaf - blade connate with two stipules . The series given above in figs . 215-235 seems to me con- clusive against this view . WHITEBEAM ( Pyrus Aria ) The scales of the winter - bud ( fig . 236 ) of the Whitebeam ( Pyrus ...
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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
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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...