On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 5
... similar case is afforded by Uvaria ( figs . 105 , 106 , p . 70 ) ; and also by common Rhubarb , уг 2 FIG . 5. - MESEMBRYANTHEMUM . 7 , l , pair of leaves , connate , and sheathing in their lower half ; p , from this point to the base ...
... similar case is afforded by Uvaria ( figs . 105 , 106 , p . 70 ) ; and also by common Rhubarb , уг 2 FIG . 5. - MESEMBRYANTHEMUM . 7 , l , pair of leaves , connate , and sheathing in their lower half ; p , from this point to the base ...
Pagina 12
... similar shape to that of the Radish , though thinner . Now , are the cotyledons of the same form as in the Mustard or Radish ? Not at all . Those of the Mus- tard , as we have seen , are kid- ney - shaped ; those of the Wall- flower are ...
... similar shape to that of the Radish , though thinner . Now , are the cotyledons of the same form as in the Mustard or Radish ? Not at all . Those of the Mus- tard , as we have seen , are kid- ney - shaped ; those of the Wall- flower are ...
Pagina 54
... similar development of the leaf - base , occur in many Sc4 Sc ' A Sc2 Sc3 Sc5 FIG . 88. - SECTION ACROSS THE BUD OF A ROSE . A , growing - point ; L ' , youngest leaf ; L , three folded lobes of second leaf ; St2 , stipules of second ...
... similar development of the leaf - base , occur in many Sc4 Sc ' A Sc2 Sc3 Sc5 FIG . 88. - SECTION ACROSS THE BUD OF A ROSE . A , growing - point ; L ' , youngest leaf ; L , three folded lobes of second leaf ; St2 , stipules of second ...
Pagina 55
... similar , at least in the case of lateral buds . The third scale ( fig . 90 ) is much larger , and rounded at the apex , or occasionally emarginate by the breaking away of the tip , and more or less strongly carinate . The 89 90 91 92 ...
... similar , at least in the case of lateral buds . The third scale ( fig . 90 ) is much larger , and rounded at the apex , or occasionally emarginate by the breaking away of the tip , and more or less strongly carinate . The 89 90 91 92 ...
Pagina 56
Sir John Lubbock. similar to the sixth ; they are rolled round the bud , covering about seven - eighths of its surface , and over- lapping at their apex . The middle tooth at the apex has slightly increased in length . This is even more ...
Sir John Lubbock. similar to the sixth ; they are rolled round the bud , covering about seven - eighths of its surface , and over- lapping at their apex . The middle tooth at the apex has slightly increased in length . This is even more ...
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Termeni și expresii frecvente
apex axil axillary buds axis base Beech Bentham blade brown Bud Protection bud-scales Candolle completely covered concave conduplicate connate stipules cotyledons developed edges exstipulate fifth folded foliaceous genera genus glabrous glands growing-point growth Guaiacum officinale hairs hairy Helianthemum Hornbeam Horse Chestnut Hypericum calycinum Illustrations inner instance lamina Lantana lateral buds Lathyrus 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 showing side slightly sometimes species St FIG st st stalk stem stipular stipules belonging stipules fig stipules St subulate tendrils terminal bud triangular Tulip Tree upper Viburnum Viburnum Lantana Viburnum Opulus Whitebeam winter winter-bud Wych Elm young bud young leaves Young Shoot younger
Pasaje populare
Pagina 191 - The acacia, however, bears hollow thorns, while each leaflet produces honey in a craterformed gland at the base, and a small, sweet, pearshaped body at the tip. In consequence, it is inhabited by myriads of a small ant, which nests in the hollow thorns, and thus finds meat, drink, and lodging all provided for it. These ants are continually roaming over the plant, and constitute a most efficient body-guard, not only driving off the leaf-cutting ants, but, in Belt's opinion, rendering the leaves less...
Pagina 233 - ... the presence, the uses, and the forms of stipules, and the structure of buds in some of our common trees, shrubs, and herbs. If I shall have induced any of my readers to look at them for themselves in the coming spring they will, I am sure, be amply rewarded. They will often be reminded of Tennyson's profound remark about Nature : So careless of the single life, So careful of the type she seems...
Pagina 68 - Plants, p. 286. -purpwrea, which naturally sink at night (the plants growing out of doors), and looked at them early on several successive mornings, after they had assumed their diurnal positions. The difference in the amount of dew on the pinned-open leaflets and on those which had gone to sleep was generally conspicuous, the latter being sometimes absolutely dry. whilst the leaflets which had been horizontal were coated with large beads of dew. This shows how much cooler the leaflets fully exposed...