On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 5
... edges , which touch all the way round , leaving between them. FIG . 6. - APEX OF SHOOT OF STACHYS SYLVATICA , showing two succes- sive pairs of leaves . Nat . size . FIG . 11. YOUNG SHOOT OF HORN- BEAM ( Carpinus. ON BUDS 5.
... edges , which touch all the way round , leaving between them. FIG . 6. - APEX OF SHOOT OF STACHYS SYLVATICA , showing two succes- sive pairs of leaves . Nat . size . FIG . 11. YOUNG SHOOT OF HORN- BEAM ( Carpinus. ON BUDS 5.
Pagina 31
... Apex of growing shoot , showing side view of stipules ; L ' , youngest , partly expanded leaf , with the lowest pair of leaflets still folded , and the sti- pules , st ' , connate opposite the leaf - base ; L ' , next younger leaf ...
... Apex of growing shoot , showing side view of stipules ; L ' , youngest , partly expanded leaf , with the lowest pair of leaflets still folded , and the sti- pules , st ' , connate opposite the leaf - base ; L ' , next younger leaf ...
Pagina 38
... . The petiole , however , is concave and am- plexicaul , and the winter - bud is covered with a number of broadly triangular brown scales , some of which show indications of being tridentate at the apex . These lateral 38 BUDS AND STIPULES.
... . The petiole , however , is concave and am- plexicaul , and the winter - bud is covered with a number of broadly triangular brown scales , some of which show indications of being tridentate at the apex . These lateral 38 BUDS AND STIPULES.
Pagina 39
Sir John Lubbock. indications of being tridentate at the apex . These lateral teeth are probably evidence of the former exist- 51 St 53 US U'S W 52 54 LEAVES OF EXOCHORDA . FIG . 51. - Leaf of Exochorda grandiflora , nat . size . FIG ...
Sir John Lubbock. indications of being tridentate at the apex . These lateral teeth are probably evidence of the former exist- 51 St 53 US U'S W 52 54 LEAVES OF EXOCHORDA . FIG . 51. - Leaf of Exochorda grandiflora , nat . size . FIG ...
Pagina 46
... apex of growing - point ; B , youngest leaf ; R , cortex ; M , pith . debted for excellent memoirs and observations to De Mercklin ( 5 ) in 1846 , Trecul ( 6 ) in 1853 , Schacht ( 7 ) in 1854 , Eichler ( 8 ) in 1861 , Goebel ( 9 ) , and ...
... apex of growing - point ; B , youngest leaf ; R , cortex ; M , pith . debted for excellent memoirs and observations to De Mercklin ( 5 ) in 1846 , Trecul ( 6 ) in 1853 , Schacht ( 7 ) in 1854 , Eichler ( 8 ) in 1861 , Goebel ( 9 ) , and ...
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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.