An Introduction to Botany |
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Page 44
... first begins to grow from the seed , it is a little body called an embryo , with two opposite extremities , of which the one elongates in the direction of the earth's 44 BOOK I. ORGANOGRAPHY . Of the Stem or Ascending Axis:
... first begins to grow from the seed , it is a little body called an embryo , with two opposite extremities , of which the one elongates in the direction of the earth's 44 BOOK I. ORGANOGRAPHY . Of the Stem or Ascending Axis:
Page 46
... embryo , or young plant , has not undergone any considerable change ; but in process of time it is externally obliterated ; so that in trees of a few years ' growth its existence becomes a matter of theory , instead of being actually ...
... embryo , or young plant , has not undergone any considerable change ; but in process of time it is externally obliterated ; so that in trees of a few years ' growth its existence becomes a matter of theory , instead of being actually ...
Page 49
... embryo , and has even been de- nominated a fixed embryo . This comparison must not , how- ever , be understood to indicate any positive identity between these two parts in structure , but merely an analogous func- tion , both being ...
... embryo , and has even been de- nominated a fixed embryo . This comparison must not , how- ever , be understood to indicate any positive identity between these two parts in structure , but merely an analogous func- tion , both being ...
Page 50
John Lindley. finally , the leaf - bud perpetuates the individual , the embryo continues the species . The usual , or normal , situation of leaf - buds is in the axillæ of leaves ; and all departure from this position is either irre ...
John Lindley. finally , the leaf - bud perpetuates the individual , the embryo continues the species . The usual , or normal , situation of leaf - buds is in the axillæ of leaves ; and all departure from this position is either irre ...
Page 63
... embryo , and youngest shoots , in contact ; but the vascular system , as it forms , gradually interposes between them , till after a few weeks they are distinctly separated , and in very aged trunks are sometimes divided by a space of ...
... embryo , and youngest shoots , in contact ; but the vascular system , as it forms , gradually interposes between them , till after a few weeks they are distinctly separated , and in very aged trunks are sometimes divided by a space of ...
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Common terms and phrases
acid Adolphe Brongniart albumen anther apex appearance appendages arrangement axis bark base become body botanists bractea branches Brown buds called calyx Cand Candolle carpella cavity cells cellular tissue cellules centre chalaza characters Class colour common Compositæ compound considered consists corolla cotyledons cuticle dehiscence developed dicotyledons direction disk dissepiments distinct distinguished ducts earth elongated embryo exist extremely filament fleshy flowers fluid fructification fruit genera genus granules hairs hilum indehiscent inflorescence integuments kind latter leaf leaflets leaves Linnæus lobes margin medullary rays membrane Mirb Mirbel modifications monocotyledons nature observed organs ovarium ovula ovulum oxygen parenchyma peculiar pericarpium petals petiole pistillum pith placenta plants Plate plumula pollen produced racters radicle receptacle remarkable roots seed sepals separate side sometimes species spiral vessels sporules stamens stem stigma stomata structure substance surface term terminating testa tree tube valves vascular vegetation veins wood woody fibre
Popular passages
Page 6 - Thysanotus fasciçularii, the flowers of which are of a deep brilliant violet, with a remarkably satiny lustre, that appearance will be found to arise from each particular cell containing a single drop of...
Page 217 - ... in its substance, and of evaporating pores on its surface, enables the crude fluid sent from the roots to be elaborated and digested until it becomes the peculiar secretion of the species; the contraction of a branch and its leaves forms a flower ; the disintegration of the internal tissue of a petal forms an anther; the folding inwards of a leaf is sufficient to constitute a...
Page 525 - ... verging to green. Again, the ranunculus, which is originally of an intense yellow, sports into scarlet, red, purple, and almost any colour but blue. White flowers, which have a tendency to produce red, will never sport to blue, although they will to yellow ; the rose, for example, and chrysanthemums. It is also probable that white flowers with a tendency to produce blue, will not vary to yellow.