On Buds and StipulesK. Paul, Trench, Trübner & Company, Limited, 1899 - 239 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 34
Pagina ix
... Leaflets - Complete and Incomplete Leaves- Gradations in Development of Stipules : Parsley , Ostru- thium , Ethusa - Difficult Cases Hypericum , Lotus , Cucumber , Helianthemum guttatum , Elder , Bryony— Views as to the nature of ...
... Leaflets - Complete and Incomplete Leaves- Gradations in Development of Stipules : Parsley , Ostru- thium , Ethusa - Difficult Cases Hypericum , Lotus , Cucumber , Helianthemum guttatum , Elder , Bryony— Views as to the nature of ...
Pagina 30
... , showing stipules ( St ) connate at the base . Nat.size . FIG . 39. - Front view . FIG . 40. - Side view . Two leaflets of the compound leaf are showu . Where stipules are present the leaf has two , one. 30 BUDS AND STIPULES.
... , showing stipules ( St ) connate at the base . Nat.size . FIG . 39. - Front view . FIG . 40. - Side view . Two leaflets of the compound leaf are showu . Where stipules are present the leaf has two , one. 30 BUDS AND STIPULES.
Pagina 31
... leaflets still folded , and the sti- pules , st ' , connate opposite the leaf - base ; L ' , next younger leaf pushing out of the bud with its stipules , st " . FIG . 42. - The same showing the dorsal aspect of the connate stipules , si ...
... leaflets still folded , and the sti- pules , st ' , connate opposite the leaf - base ; L ' , next younger leaf pushing out of the bud with its stipules , st " . FIG . 42. - The same showing the dorsal aspect of the connate stipules , si ...
Pagina 52
... ( fig . 87 ) , which arise almost simul- taneously . The upper of these becomes one of the 1 According to Schacht , however , the stipule appears first . upper leaflets , the lower is one of the stipules 52 BUDS AND STIPULES.
... ( fig . 87 ) , which arise almost simul- taneously . The upper of these becomes one of the 1 According to Schacht , however , the stipule appears first . upper leaflets , the lower is one of the stipules 52 BUDS AND STIPULES.
Pagina 53
Sir John Lubbock. upper leaflets , the lower is one of the stipules . Almost immediately a third , and then a fourth , lobe make their appearance . The third is the rudiment of a leaflet of the second pair , the fourth of the third ...
Sir John Lubbock. upper leaflets , the lower is one of the stipules . Almost immediately a third , and then a fourth , lobe make their appearance . The third is the rudiment of a leaflet of the second pair , the fourth of the third ...
Alte ediții - Afișează-le pe toate
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
Pasaje populare
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.