On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina viii
Sir John Lubbock. CHAPTER III ON THE DEVELOPMENT OF LEAVES AND STIPULES Origin of Leaves ... Leaf - base , by Modified Leaves , by Leaf - stalk , by Stipules , by ... blade : Lilac , Holly , Willow , Viburnum ( Guelder Rose ) -Protection by ...
Sir John Lubbock. CHAPTER III ON THE DEVELOPMENT OF LEAVES AND STIPULES Origin of Leaves ... Leaf - base , by Modified Leaves , by Leaf - stalk , by Stipules , by ... blade : Lilac , Holly , Willow , Viburnum ( Guelder Rose ) -Protection by ...
Pagina ix
... Leaf : Leaf - base with Stipules ; Leaf - stalk with Leaf - blade or Leaflets - Complete and Incomplete Leaves- Gradations in Development of Stipules : Parsley , Ostru- thium , Ethusa - Difficult Cases Hypericum , Lotus , Cucumber ...
... Leaf : Leaf - base with Stipules ; Leaf - stalk with Leaf - blade or Leaflets - Complete and Incomplete Leaves- Gradations in Development of Stipules : Parsley , Ostru- thium , Ethusa - Difficult Cases Hypericum , Lotus , Cucumber ...
Pagina 28
... leaf and protect the next succeeding bud , as , for instance , in Petteria ( figs . 35 , 36 ) ; or they may last ... blade , which drops off in autumn , while they retain their place and protect the young bud through the winter . When ...
... leaf and protect the next succeeding bud , as , for instance , in Petteria ( figs . 35 , 36 ) ; or they may last ... blade , which drops off in autumn , while they retain their place and protect the young bud through the winter . When ...
Pagina 29
... leaf terminating each year's growth is small , and eventually the blade becomes disarticulated just above the stipules , which are adnate to the leaf - base and enclose the bud ( fig . 38 ) . These stipules are in this species the only ...
... leaf terminating each year's growth is small , and eventually the blade becomes disarticulated just above the stipules , which are adnate to the leaf - base and enclose the bud ( fig . 38 ) . These stipules are in this species the only ...
Pagina 50
... leaf - blade has reached th inch ( fig . 67 ) the stipules have caught it up . They are more oval , more pointed , and bordered by a row of small projections . They continue to grow ( fig . 68 ) more rapidly than the leaf - blade , and ...
... leaf - blade has reached th inch ( fig . 67 ) the stipules have caught it up . They are more oval , more pointed , and bordered by a row of small projections . They continue to grow ( fig . 68 ) more rapidly than the leaf - blade , and ...
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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...