On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 2
... ( lower ) leaf , which had only a single covering , has been killed by frost , while the suc- ceeding one , which had two wraps , has escaped . It is remarkable that some nearly allied genera , and even in certain cases species of the ...
... ( lower ) leaf , which had only a single covering , has been killed by frost , while the suc- ceeding one , which had two wraps , has escaped . It is remarkable that some nearly allied genera , and even in certain cases species of the ...
Pagina 5
... lower half ; p , from this point to the base the leaves are attached to the axis , and axillary buds arise exactly at this place ; a , axis ; yl , next younger pair of leaves . where the delicate new leaves in the centre of the plant ...
... lower half ; p , from this point to the base the leaves are attached to the axis , and axillary buds arise exactly at this place ; a , axis ; yl , next younger pair of leaves . where the delicate new leaves in the centre of the plant ...
Pagina 10
... lower ones grow , and the upper part of the stem dies back . The arrangement of the leaf in the bud influences , and sometimes determines , the form of the leaf . This consideration explains , I think , the curious fact that the first ...
... lower ones grow , and the upper part of the stem dies back . The arrangement of the leaf in the bud influences , and sometimes determines , the form of the leaf . This consideration explains , I think , the curious fact that the first ...
Pagina 36
... lower ones have none . Now the lower leaves have broad leaf - bases , which effectually protect the bud , and they are exstipulate ; the upper leaves , on the contrary , are narrow at the base , but they are provided with stipules . The ...
... lower ones have none . Now the lower leaves have broad leaf - bases , which effectually protect the bud , and they are exstipulate ; the upper leaves , on the contrary , are narrow at the base , but they are provided with stipules . The ...
Pagina 39
... . The petiole of the lower leaves also sometimes shows short teeth at its upper end , which also probably represent the last trace of stipules . Among the Magnoliacea , some genera have stipules , while ON STIPULES 39.
... . The petiole of the lower leaves also sometimes shows short teeth at its upper end , which also probably represent the last trace of stipules . Among the Magnoliacea , some genera have stipules , while ON STIPULES 39.
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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...