On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 26
... membranous , and often very delicate , thin , and almost transparent . Others develop into hard , woody spines , as in Robinia ( so - called Acacia ) , & c . ( figs . 33 , 34 ) . As regards the duration of life , some stipules ,. FIG ...
... membranous , and often very delicate , thin , and almost transparent . Others develop into hard , woody spines , as in Robinia ( so - called Acacia ) , & c . ( figs . 33 , 34 ) . As regards the duration of life , some stipules ,. FIG ...
Pagina 31
... membranous , and develop early , so that the leaves at this stage lie between two rows of stipules . In Sainfoin ( Onobrychis sativa ) ( figs . 43 , 44 ) also the stipules are united for the greater part of their length . In other ...
... membranous , and develop early , so that the leaves at this stage lie between two rows of stipules . In Sainfoin ( Onobrychis sativa ) ( figs . 43 , 44 ) also the stipules are united for the greater part of their length . In other ...
Pagina 40
... membranous margin representing stipules , free only at the tip . The true leaves follow the scales abruptly . Another very interesting case is that of Viburnum . ' We have in this country two wild species of this genus - one , Viburnum ...
... membranous margin representing stipules , free only at the tip . The true leaves follow the scales abruptly . Another very interesting case is that of Viburnum . ' We have in this country two wild species of this genus - one , Viburnum ...
Pagina 101
... membranous . Both are traversed longitudinally by slender parallel FIG . 152 . FIG . 153 . TERMINAL BUD OF MAGNOLIA UMBRELLA , x 14 . FIG . 152. - Uppermost leaf still present . FIG . 153. - Uppermost leaf has fallen , leaving only a ...
... membranous . Both are traversed longitudinally by slender parallel FIG . 152 . FIG . 153 . TERMINAL BUD OF MAGNOLIA UMBRELLA , x 14 . FIG . 152. - Uppermost leaf still present . FIG . 153. - Uppermost leaf has fallen , leaving only a ...
Pagina 102
Sir John Lubbock. equal , narrowly ovate or lanceolate , membranous , and more faintly nerved than the previous pair . The outer stipule envelops about two - thirds of the bud , including its fellow - stipule and the leaf . The latter is ...
Sir John Lubbock. equal , narrowly ovate or lanceolate , membranous , and more faintly nerved than the previous pair . The outer stipule envelops about two - thirds of the bud , including its fellow - stipule and the leaf . The latter is ...
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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.