On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina xv
... Outer Scales of Bud of Wych Elm . 148 263-268 Winter - bud of Plane . 149 269 Bud of Spanish Chestnut 151 270,271 ... Scales and Leaf of Picea excelsa Leaves of Hawthorn Leaves of Red Currant 293 Stipules of Ervum monanthos 157 162 164 ...
... Outer Scales of Bud of Wych Elm . 148 263-268 Winter - bud of Plane . 149 269 Bud of Spanish Chestnut 151 270,271 ... Scales and Leaf of Picea excelsa Leaves of Hawthorn Leaves of Red Currant 293 Stipules of Ervum monanthos 157 162 164 ...
Pagina 26
... outer stipular scales of many buds are tough and leathery , the inner ones more membranous , and often very delicate , thin , and almost transparent . Others develop into hard , woody spines , as in Robinia ( so - called Acacia ) , & c ...
... outer stipular scales of many buds are tough and leathery , the inner ones more membranous , and often very delicate , thin , and almost transparent . Others develop into hard , woody spines , as in Robinia ( so - called Acacia ) , & c ...
Pagina 40
... outer leaves of the resting bud , which are reduced to bract - like fleshy scales . The leaves are convolute , the lower enclosing the upper ones . Again , in Kadsura ( K. japonica ) the winter - buds are protected by the outer leaves ...
... outer leaves of the resting bud , which are reduced to bract - like fleshy scales . The leaves are convolute , the lower enclosing the upper ones . Again , in Kadsura ( K. japonica ) the winter - buds are protected by the outer leaves ...
Pagina 49
... outer scales . two other lobes appear at the base of the first ( fig . 64 , s , s ) . These are the stipules . E than the leaf . By the time , however ,. They are at first much smaller. DEVELOPMENT OF LEAVES AND STIPULES 49.
... outer scales . two other lobes appear at the base of the first ( fig . 64 , s , s ) . These are the stipules . E than the leaf . By the time , however ,. They are at first much smaller. DEVELOPMENT OF LEAVES AND STIPULES 49.
Pagina 50
... outer scales do not , of course , correspond to stages in the development of a normal leaf . A rudimentary leaf , such as that in fig . 70 , is followed by a scale of quite a different form : broader , wrapping round the bud , and ...
... outer scales do not , of course , correspond to stages in the development of a normal leaf . A rudimentary leaf , such as that in fig . 70 , is followed by a scale of quite a different form : broader , wrapping round the bud , and ...
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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...