On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 20
... Slightly enlarged . ' J'indique dans ce genre deux principaux objets de recherche . Le premier est la raison pour laquelle certaines espèces ont des stipules tandis que d'autres on en sont privées . ' This suggestion started me 20 BUDS ...
... Slightly enlarged . ' J'indique dans ce genre deux principaux objets de recherche . Le premier est la raison pour laquelle certaines espèces ont des stipules tandis que d'autres on en sont privées . ' This suggestion started me 20 BUDS ...
Pagina 21
... Slightly enlarged . Fig . 22 represents a shoot of Helianthemum vulgare ( the Common Rock Rose ) , with stipules ; Fig . 23 , one of Helianthemum celandicum , which has none . 6 Malpighi , in his ' Anatomy of Plants ' ( 1671 ) , seems ...
... Slightly enlarged . Fig . 22 represents a shoot of Helianthemum vulgare ( the Common Rock Rose ) , with stipules ; Fig . 23 , one of Helianthemum celandicum , which has none . 6 Malpighi , in his ' Anatomy of Plants ' ( 1671 ) , seems ...
Pagina 44
... slightly conduplicate . These considerations seem to throw some light on the differences between the leaves of Viburnum Lantana and V. Opulus - the hairiness of the former and. FIG . 57. - BUD OF They are at first much smaller. 44 BUDS ...
... slightly conduplicate . These considerations seem to throw some light on the differences between the leaves of Viburnum Lantana and V. Opulus - the hairiness of the former and. FIG . 57. - BUD OF They are at first much smaller. 44 BUDS ...
Pagina 47
... slight projections , each of which broadens at the base , and finally occupies one- half of the circumference of the stem ... slightly curved round the stem , become folded lengthways or con- duplicate DEVELOPMENT OF LEAVES AND STIPULES 47.
... slight projections , each of which broadens at the base , and finally occupies one- half of the circumference of the stem ... slightly curved round the stem , become folded lengthways or con- duplicate DEVELOPMENT OF LEAVES AND STIPULES 47.
Pagina 50
... . 79 ) . THE TULIP TREE ( Liriodendron tulipifera ) In the Tulip Tree the leaf commences as a slight projection immediately below the growing - point , and gradually widens into a ridge , the two ends of 50 BUDS AND STIPULES.
... . 79 ) . THE TULIP TREE ( Liriodendron tulipifera ) In the Tulip Tree the leaf commences as a slight projection immediately below the growing - point , and gradually widens into a ridge , the two ends of 50 BUDS AND STIPULES.
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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...