On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 14
... face to face they form a hollow almond - shaped box . Inside this lies the next younger pair of stipules ; and the rest of the space is occu- pied by the young leaf , which is conduplicate , or folded on itself down the middle , like a ...
... face to face they form a hollow almond - shaped box . Inside this lies the next younger pair of stipules ; and the rest of the space is occu- pied by the young leaf , which is conduplicate , or folded on itself down the middle , like a ...
Pagina 74
... face to face , A FIG . 111 . B B FIG . 112 . NEGUNDO ACEROIDES . Nat . size . FIG . 111. - Portion of shoot ( A ) with the bases of the two opposite leaf - stalks ( P ) . FIG . 112. - Vertical section of same , showing the axillary buds ...
... face to face , A FIG . 111 . B B FIG . 112 . NEGUNDO ACEROIDES . Nat . size . FIG . 111. - Portion of shoot ( A ) with the bases of the two opposite leaf - stalks ( P ) . FIG . 112. - Vertical section of same , showing the axillary buds ...
Pagina 75
... face to face , but not overlapping or interlocking Α B p " FIG . 113. - SOPHORA JAPONICA . Nat . size . Two nodes of a stem , the lower showing the base of the petiole ( P ' ) with the small round scar of the fallen stipule . In ...
... face to face , but not overlapping or interlocking Α B p " FIG . 113. - SOPHORA JAPONICA . Nat . size . Two nodes of a stem , the lower showing the base of the petiole ( P ' ) with the small round scar of the fallen stipule . In ...
Pagina 85
... face with pale brown hairs like a thick fur , while they are glabrous and dull olive - green externally . In Guaiacum officinale ( figs . 131 , 132 ) the stipules are axillary and connate into a rounded piece on each side of the stem on ...
... face with pale brown hairs like a thick fur , while they are glabrous and dull olive - green externally . In Guaiacum officinale ( figs . 131 , 132 ) the stipules are axillary and connate into a rounded piece on each side of the stem on ...
Pagina 90
... belonging to which have become completely aborted . The outer stipule or cap is brown or reddish brown , and secretes a gummy substance on its inner sur- face , besmearing the bud as in the Horse Chestnut 90 BUDS AND STIPULES.
... belonging to which have become completely aborted . The outer stipule or cap is brown or reddish brown , and secretes a gummy substance on its inner sur- face , besmearing the bud as in the Horse Chestnut 90 BUDS AND STIPULES.
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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.