On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 6
... become ripened and brown . The middle line of the sheath -- that is , the line of junction of the two leaves - becomes brown with age while the thicker portion is still green . In other plants , as in Stachys ( fig . 6 ) , the leaves do ...
... become ripened and brown . The middle line of the sheath -- that is , the line of junction of the two leaves - becomes brown with age while the thicker portion is still green . In other plants , as in Stachys ( fig . 6 ) , the leaves do ...
Pagina 17
... 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 reserves are ...
... 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 reserves are ...
Pagina 44
... become leathery , and thus protect the inner ones ; this is the case with V. Opulus . But that being so , it is an advantage that the inner or true leaves should be folded , because they thus occupy less space . This , perhaps ...
... become leathery , and thus protect the inner ones ; this is the case with V. Opulus . But that being so , it is an advantage that the inner or true leaves should be folded , because they thus occupy less space . This , perhaps ...
Pagina 47
... and almost cover over the growing - point . They gradually elongate ( fig . 61 ) , and from being at first slightly curved round the stem , become folded lengthways or con- duplicate DEVELOPMENT OF LEAVES AND STIPULES 47.
... and almost cover over the growing - point . They gradually elongate ( fig . 61 ) , and from being at first slightly curved round the stem , become folded lengthways or con- duplicate DEVELOPMENT OF LEAVES AND STIPULES 47.
Pagina 48
Sir John Lubbock. round the stem , become folded lengthways or con- duplicate . They are clothed with long , sparse hairs , and show a few teeth , or rather knobs , along the edge , one terminating each of the veins , which are thicker ...
Sir John Lubbock. round the stem , become folded lengthways or con- duplicate . They are clothed with long , sparse hairs , and show a few teeth , or rather knobs , along the edge , one terminating each of the veins , which are thicker ...
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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...