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 en sont privées . ' This suggestion started me on 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 en sont privées . ' This suggestion started me on 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 . Malpighi , in his ' Anatomy of Plants ' ( 1671 ) , seems to ...
... 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 . Malpighi , in his ' Anatomy of Plants ' ( 1671 ) , seems to ...
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 VIBURNUM OPU. 44 BUDS AND STIPULES.
... 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 VIBURNUM OPU. 44 BUDS AND STIPULES.
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 81 gradually widens into a ridge , the two ends 50 BUDS AND STIPULES 75.
... . 79 ) . THE TULIP TREE ( Liriodendron tulipifera ) In the Tulip Tree the leaf commences as a slight projection immediately below the growing - point , and 81 gradually widens into a ridge , the two ends 50 BUDS AND STIPULES 75.
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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.