On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
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Pagina 9
... fallen away . But why do the terminal buds wither away ? In some cases the bud contains a definite number of leaves , but in the genera above mentioned the number is indefinite. FIG . 11. YOUNG SHOOT OF HORN- BEAM ( Carpinus Betulus ) ...
... fallen away . But why do the terminal buds wither away ? In some cases the bud contains a definite number of leaves , but in the genera above mentioned the number is indefinite. FIG . 11. YOUNG SHOOT OF HORN- BEAM ( Carpinus Betulus ) ...
Pagina 27
... COMMON THORN . Nat . size . St , stipules , absent in the first figure . latter expand . The ground under Beeches in spring is almost brown with fallen stipules . Others , as , for instance , those of the ON STIPULES 27.
... COMMON THORN . Nat . size . St , stipules , absent in the first figure . latter expand . The ground under Beeches in spring is almost brown with fallen stipules . Others , as , for instance , those of the ON STIPULES 27.
Pagina 28
... fallen leaf ; g , gland above the bud . FIG . 34 .-- ROBINIA PSEUDACACIA , VAR . DECAISNEANA . Nat . size . s , s , spiny stipules sketched in winter ( March 13 , 1897 ) ; sc , scar of fallen leaf ; g , gland above the bud . In certain ...
... fallen leaf ; g , gland above the bud . FIG . 34 .-- ROBINIA PSEUDACACIA , VAR . DECAISNEANA . Nat . size . s , s , spiny stipules sketched in winter ( March 13 , 1897 ) ; sc , scar of fallen leaf ; g , gland above the bud . In certain ...
Pagina 29
... fallen leaf ; St , stipules completely covering the bud in fig . 35 , in fig . 36 pushed aside by the developing bud ( b ) . FIG . 37. - POPULUS NIGRA . TERMINAL WINTER - BUD , showing a pair of per- sistent stipules ( st ) be- longing ...
... fallen leaf ; St , stipules completely covering the bud in fig . 35 , in fig . 36 pushed aside by the developing bud ( b ) . FIG . 37. - POPULUS NIGRA . TERMINAL WINTER - BUD , showing a pair of per- sistent stipules ( st ) be- longing ...
Pagina 56
... fallen , revealing its axillary bud ( b ) ; five scales are shown , and two of the first leaves . Sketched March 24 . FIG . 96. - Uppermost scale , immediately preceding the first true leaf , × 2 ; L , unde- veloped blade ; st , st ...
... fallen , revealing its axillary bud ( b ) ; five scales are shown , and two of the first leaves . Sketched March 24 . FIG . 96. - Uppermost scale , immediately preceding the first true leaf , × 2 ; L , unde- veloped blade ; st , st ...
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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...