On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 9
... scar , left by the true terminal bud , which has dropped away , so that the one which is apparently terminal is really axil- lary .. Fig . 11 represents the end of a shoot of Hornbeam ( Carpinus Betulus ) , taken in July , and shows how ...
... scar , left by the true terminal bud , which has dropped away , so that the one which is apparently terminal is really axil- lary .. Fig . 11 represents the end of a shoot of Hornbeam ( Carpinus Betulus ) , taken in July , and shows how ...
Pagina 28
... scar of fallen leaf ; g , gland above the bud . FIG . 34 .-- ROBINIA PSEUDACACIA , VAR . DECAISNEANA . Nat . size . s , s , spiny stipules sketched in winter ( March 13 , 1897 ) ; sc , scar of fallen leaf ; g , gland above the bud . In ...
... scar of fallen leaf ; g , gland above the bud . FIG . 34 .-- ROBINIA PSEUDACACIA , VAR . DECAISNEANA . Nat . size . s , s , spiny stipules sketched in winter ( March 13 , 1897 ) ; sc , scar of fallen leaf ; g , gland above the bud . In ...
Pagina 29
... scar of fallen leaf ; St , stipules completely covering the bud in fig . 35 , in fig . 36 pushed aside by the developing bud ( b ) . FIG . 37. - POPULUS NIGRA . TERMINAL WINTER - BUD , showing a pair of per- sistent stipules ( st ) be ...
... scar of fallen leaf ; St , stipules completely covering the bud in fig . 35 , in fig . 36 pushed aside by the developing bud ( b ) . FIG . 37. - POPULUS NIGRA . TERMINAL WINTER - BUD , showing a pair of per- sistent stipules ( st ) be ...
Pagina 75
... scar of the fallen stipule . In vertical section above , the upper node showing the axillary bud ( B ) completely covered by the thickened , fleshy base of the petiole ( P " ) . with one another . The leaves attain some size before ...
... scar of the fallen stipule . In vertical section above , the upper node showing the axillary bud ( B ) completely covered by the thickened , fleshy base of the petiole ( P " ) . with one another . The leaves attain some size before ...
Pagina 77
... base of the leaf ( L ) , between which and the leaf - base the bud is sheltered . FIG . 117. - Another view . Sc , scar of leaf ; s , swelling ; B bud . B Sc the stem throws out a process which almost meets that ON THE PROTECTION OF BUDS ...
... base of the leaf ( L ) , between which and the leaf - base the bud is sheltered . FIG . 117. - Another view . Sc , scar of leaf ; s , swelling ; B bud . B Sc the stem throws out a process which almost meets that ON THE PROTECTION OF BUDS ...
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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
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.