On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 54
Pagina 2
... instance , in the Black Poplar ( Populus nigra ) . FIG . 1. - YOUNG SHOOT OF TULIP TREE ( Lirioden- dron ) , 1 nat . size . The following figure ( fig . 1 ) , representing a young shoot of a Tulip Tree , is an illustration of the ...
... instance , in the Black Poplar ( Populus nigra ) . FIG . 1. - YOUNG SHOOT OF TULIP TREE ( Lirioden- dron ) , 1 nat . size . The following figure ( fig . 1 ) , representing a young shoot of a Tulip Tree , is an illustration of the ...
Pagina 4
Sir John Lubbock. In the Begonias ( fig . 2 ) , for instance , as Mr. Potter has pointed out ( 1 ) , 1 the buds are shaded from the over- powering heat of the sun by the older leaves . Plants grown under artificial conditions do not show ...
Sir John Lubbock. In the Begonias ( fig . 2 ) , for instance , as Mr. Potter has pointed out ( 1 ) , 1 the buds are shaded from the over- powering heat of the sun by the older leaves . Plants grown under artificial conditions do not show ...
Pagina 11
... instances in illustration . I will take first the Common Radish ( Raphanus sativus ) , with which , as regards the cotyledons , the Cab- bage and Mustard closely agree . The seed of the Radish is shaped as in fig . 12. What regulates ...
... instances in illustration . I will take first the Common Radish ( Raphanus sativus ) , with which , as regards the cotyledons , the Cab- bage and Mustard closely agree . The seed of the Radish is shaped as in fig . 12. What regulates ...
Pagina 23
... instance , of the Common Garden Pea A В FIG . 26. - STIPULES OF PEA BEFORE THE UNFOLDING OF THE LEAF . A , natural position ; B , one stipule turned back , showing the rest of the leaf . ( Pisum sativum ) ( fig . 26 ) are large , oblong ...
... instance , of the Common Garden Pea A В FIG . 26. - STIPULES OF PEA BEFORE THE UNFOLDING OF THE LEAF . A , natural position ; B , one stipule turned back , showing the rest of the leaf . ( Pisum sativum ) ( fig . 26 ) are large , oblong ...
Pagina 24
... are even more minute , as in the Holly ( Ilex Aquifolium ) ( fig . 29 ) . Here they are perhaps functionless ; the mere rudiments of once larger organs . In other cases , however , as for instance in 24 BUDS AND STIPULES.
... are even more minute , as in the Holly ( Ilex Aquifolium ) ( fig . 29 ) . Here they are perhaps functionless ; the mere rudiments of once larger organs . In other cases , however , as for instance in 24 BUDS AND STIPULES.
Alte ediții - Afișează-le pe toate
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.