On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina viii
... Hairs : Polygonum amphibium , Viburnum , Horse Chestnut , Plane , Stachys , Nettle - Protection by Gum or Resin : Horse Chestnut , Poplar , Hazel Nut , Honeysuckle , Currant , Hornbeam , Elder , Alder , Violet , Salvia , Dock , Rhubarb ...
... Hairs : Polygonum amphibium , Viburnum , Horse Chestnut , Plane , Stachys , Nettle - Protection by Gum or Resin : Horse Chestnut , Poplar , Hazel Nut , Honeysuckle , Currant , Hornbeam , Elder , Alder , Violet , Salvia , Dock , Rhubarb ...
Pagina xiv
... Hairs in Lilac ( after Hanstein ) 140 , 141 Development of Glandular Hairs in Plane ( after 142-148 Winter - buds of Alder . 149-151 Bud Protection in Magnolia Yulan 75 94 95 98,99 100 152 , 153 Bud of Magnolia Umbrella 154-160 Bud of ...
... Hairs in Lilac ( after Hanstein ) 140 , 141 Development of Glandular Hairs in Plane ( after 142-148 Winter - buds of Alder . 149-151 Bud Protection in Magnolia Yulan 75 94 95 98,99 100 152 , 153 Bud of Magnolia Umbrella 154-160 Bud of ...
Pagina 1
... hairs , and often still further protected from insects and browsing quadrupeds by gummy or resinous secretions . The bud is a short shoot bearing a number of young leaves closely packed together . There is generally one B at the summit ...
... hairs , and often still further protected from insects and browsing quadrupeds by gummy or resinous secretions . The bud is a short shoot bearing a number of young leaves closely packed together . There is generally one B at the summit ...
Pagina 7
... hairs . In the Plane ( fig . 7 ) the base of the leaf - stalk is hollowed out , forming a sort of cup or extinguisher , which completely covers the young bud . By the time the leaf drops the outer envelopes of the bud are suf- FIG . 8 ...
... hairs . In the Plane ( fig . 7 ) the base of the leaf - stalk is hollowed out , forming a sort of cup or extinguisher , which completely covers the young bud . By the time the leaf drops the outer envelopes of the bud are suf- FIG . 8 ...
Pagina 42
... hairs affords a sufficient protection ; but the tender young leaves of V. Opulus would afford a tempting food to many cater- pillars and other insects . The ants and wasps which are attracted by the honey would tend to keep them down ...
... hairs affords a sufficient protection ; but the tender young leaves of V. Opulus would afford a tempting food to many cater- pillars and other insects . The ants and wasps which are attracted by the honey would tend to keep them down ...
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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.