On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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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.
Pagina 43
... larger organ which at one time performed some useful pur- pose in the economy of the animal or plant . This suggestion , however , seems untenable in the present case , because , as a matter of fact , we do not find that the stipuliform ...
... larger organ which at one time performed some useful pur- pose in the economy of the animal or plant . This suggestion , however , seems untenable in the present case , because , as a matter of fact , we do not find that the stipuliform ...
Pagina 48
... larger in proportion than in the full - grown leaf . COMMON LAUREL The subjoined figures illustrate the structure of the bud of a Common Laurel ( Cerasus Laurocerasus ) . Here again the leaf commences as a small projection or 48 BUDS ...
... larger in proportion than in the full - grown leaf . COMMON LAUREL The subjoined figures illustrate the structure of the bud of a Common Laurel ( Cerasus Laurocerasus ) . Here again the leaf commences as a small projection or 48 BUDS ...
Pagina 50
... larger one becoming rather more ( fig . 70 ) , the shorter one rather less , than double as long as the leaf - blade . Then comes a some- what abrupt transition , and the outer scales do not , of course , correspond to stages in the ...
... larger one becoming rather more ( fig . 70 ) , the shorter one rather less , than double as long as the leaf - blade . Then comes a some- what abrupt transition , and the outer scales do not , of course , correspond to stages in the ...
Pagina 55
... 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 93 94 BUD - SCALES OF ROSA CANINA , × 2 . FIG . 89 , first scale ; FIG . 90 , third do ...
... 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 93 94 BUD - SCALES OF ROSA CANINA , × 2 . FIG . 89 , first scale ; FIG . 90 , third do ...
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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.