On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina xiii
... sheath and Axillary 233 Buds . 38 51-54 Leaves of Exochorda 39 55 Viburnum Lantana ( after Bentham ) 41 56 Viburnum Opulus ( after Bentham ) 41 57 Bud of Viburnum Opulus 44 58 87 88 Growing - point of Rose 59-63 Leaf Development in ...
... sheath and Axillary 233 Buds . 38 51-54 Leaves of Exochorda 39 55 Viburnum Lantana ( after Bentham ) 41 56 Viburnum Opulus ( after Bentham ) 41 57 Bud of Viburnum Opulus 44 58 87 88 Growing - point of Rose 59-63 Leaf Development in ...
Pagina 6
... sheath 3-5 cm . long , which remains green after the stem it encloses has become ripened and brown . The middle line of the sheath-- that is , the line of junction of the two leaves - becomes brown with age while the thicker portion is ...
... sheath 3-5 cm . long , which remains green after the stem it encloses has become ripened and brown . The middle line of the sheath-- that is , the line of junction of the two leaves - becomes brown with age while the thicker portion is ...
Pagina 31
... in the Pondweed ( Potamogeton ) ( fig . 45 ) and in the Knot- weeds ( Polygonum ) ( fig . 46 ) , where they form the sheath , called technically an ocrea . The Hop also has connate stipules , but in this ON STIPULES 31.
... in the Pondweed ( Potamogeton ) ( fig . 45 ) and in the Knot- weeds ( Polygonum ) ( fig . 46 ) , where they form the sheath , called technically an ocrea . The Hop also has connate stipules , but in this ON STIPULES 31.
Pagina 32
... leaves , but connate at the base , forming a sheath , which envelops the base of the leaves . De Candolle observes that the existence of stipules paraît liée assez intimément avec la symétrie générale des plantes 32 BUDS AND STIPULES.
... leaves , but connate at the base , forming a sheath , which envelops the base of the leaves . De Candolle observes that the existence of stipules paraît liée assez intimément avec la symétrie générale des plantes 32 BUDS AND STIPULES.
Pagina 37
... sheath . It may , however , be objected that this is hardly a case in point , because none of the species of Cistus ... sheaths of leaves ; A , A , axillary shoots . There are , however , as already mentioned , some other families of ...
... sheath . It may , however , be objected that this is hardly a case in point , because none of the species of Cistus ... sheaths of leaves ; A , A , axillary shoots . There are , however , as already mentioned , some other families of ...
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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.