On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 11
Pagina x
... Tendrils - Monocotyledons - Stipellæ -Stipules rare in Cotyledons - Composition of Leaf . CHAPTER IX SUMMARY 197 The Bud - Modes of Protection - Stipules : Nature of , Uses of— Fall of the Leaf : Not a case of Death , but a Vital ...
... Tendrils - Monocotyledons - Stipellæ -Stipules rare in Cotyledons - Composition of Leaf . CHAPTER IX SUMMARY 197 The Bud - Modes of Protection - Stipules : Nature of , Uses of— Fall of the Leaf : Not a case of Death , but a Vital ...
Pagina 17
... tendrils , as in Passiflora . Another class of buds has been termed by Du Petit Thouars ' adventive ' buds . They appear , especially in certain plants , on the leaves , internodes , and roots . They may be divided into two classes ...
... tendrils , as in Passiflora . Another class of buds has been termed by Du Petit Thouars ' adventive ' buds . They appear , especially in certain plants , on the leaves , internodes , and roots . They may be divided into two classes ...
Pagina 161
... tendrils , as in Smilax . In many cases the stipules are very small , sometimes quite minute , as in Hymenanthera ( fig . 28 ) , a plant belonging to the Violet family . The Holly is described in Bentham and Hooker's Genera Plantarum ...
... tendrils , as in Smilax . In many cases the stipules are very small , sometimes quite minute , as in Hymenanthera ( fig . 28 ) , a plant belonging to the Violet family . The Holly is described in Bentham and Hooker's Genera Plantarum ...
Pagina 179
... the middle and upper portions of the stem . The tendrils represent the leaves , and are alternate and distichous ; that is , on the plan of arrangement . The stipules are arranged in two ranks , inserted on N 2 ON THE FORMS OF STIPULES 179.
... the middle and upper portions of the stem . The tendrils represent the leaves , and are alternate and distichous ; that is , on the plan of arrangement . The stipules are arranged in two ranks , inserted on N 2 ON THE FORMS OF STIPULES 179.
Pagina 180
... tendrils . All lateral buds come in the axils of the tendrils . The stipules , therefore , perform the double function of leaves and the work of protection . A very interesting contrast is af- forded by another species of Lathyrus ( L ...
... tendrils . All lateral buds come in the axils of the tendrils . The stipules , therefore , perform the double function of leaves and the work of protection . A very interesting contrast is af- forded by another species of Lathyrus ( L ...
Alte ediții - Afișează-le pe toate
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
Pasaje populare
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.