On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 17
... stage of growth , become quiescent , and are gradually covered over by the bark . Such buds are known as dormant . ' They may remain in the same state for years , but if the growing shoots are injured in the struggle for existence these ...
... stage of growth , become quiescent , and are gradually covered over by the bark . Such buds are known as dormant . ' They may remain in the same state for years , but if the growing shoots are injured in the struggle for existence these ...
Pagina 23
... stage and all the rest of the bud . In the Pansy ( fig . 27 ) they are large , oblong , and pinnatifid , with 3-6 linear lobes on the ex- ternal side . In Hymenanthera ( fig . 28 ) , a FIG . 27. - LEAF OF PANSY Three - fourths nat ...
... stage and all the rest of the bud . In the Pansy ( fig . 27 ) they are large , oblong , and pinnatifid , with 3-6 linear lobes on the ex- ternal side . In Hymenanthera ( fig . 28 ) , a FIG . 27. - LEAF OF PANSY Three - fourths nat ...
Pagina 31
... stage lie between two rows of stipules . In Sainfoin ( Onobrychis sativa ) ( figs . 43 , 44 ) also the stipules are united for the greater part of their length . In other species they are ' intrapetiolar , ' more or less connate on the ...
... stage lie between two rows of stipules . In Sainfoin ( Onobrychis sativa ) ( figs . 43 , 44 ) also the stipules are united for the greater part of their length . In other species they are ' intrapetiolar , ' more or less connate on the ...
Pagina 51
... stage , × 20 . FIG . 82.-Do. do . rather more advanced stage , x 20 . the stipules meet the leaf - blade commences . It is at first a very narrow , delicate , hyaline membrane . The bud then assumes the appearance shown in fig . 80 ...
... stage , × 20 . FIG . 82.-Do. do . rather more advanced stage , x 20 . the stipules meet the leaf - blade commences . It is at first a very narrow , delicate , hyaline membrane . The bud then assumes the appearance shown in fig . 80 ...
Pagina 57
... stage of the bud in winter , the stipules being adnate along the whole length of the midrib , so that the lamina of the leaf is sessile . The above description was made from an average bud on a strong shoot . Buds on weak shoots have ...
... stage of the bud in winter , the stipules being adnate along the whole length of the midrib , so that the lamina of the leaf is sessile . The above description was made from an average bud on a strong shoot . Buds on weak shoots have ...
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Termeni și expresii frecvente
apex axil axillary buds axis base become Beech blade brown bud fig bud is protected bud-scales catkin ciliate completely covered concave conduplicate connate stipules cotyledons developed edges Edition fifth folded fourth genera glabrous glands glandular growing-point growth Guaiacum officinale hairs hairy Helianthemum Hornbeam Horse Chestnut inserted instance lamina lateral buds Lathyrus Lathyrus Aphaca Lathyrus Nissolia leaf leaf-base leaf-blade leaf-stalk leaflets leaves and stipules Leguminosa length less lobes lower membranous midrib Monocotyledons narrower nerves node oblong ocrea Opulus outer scales ovate pair of leaves pair of stipules pairs of scales pedestal persistent petiole PLANE Platanus plant Polygonum portion protect the bud protect the young scale fig scar sheath showing side silky sixth slightly smaller sometimes species spines stem stipular stipules belonging stipules fig subulate tendrils terminal bud trees triangular unequal upper Viburnum Viburnum Lantana Viburnum Opulus Whitebeam winter winter-bud Wych Elm young leaves
Pasaje populare
Pagina 233 - Prontenex, the owner stated that for years they followed the same order of succession at both epochs : those which were first to leaf were also the earliest to lose their leaves. A Chestnut in the gardens of the Tuileries from its habit of early leafing is known as the Vingt Mars ; and M. Henri Vilmorin states that, compared with the other Chestnuts in the gardens, it keeps its leaves beyond the mean time of leaf-fall. M. Vilmorin also observed thirty-four Horse Chestnuts, 150 years old, in a plantation...