An Introduction to Botany |
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Page 6
... young plants and in coty- ledons , and soluble in boiling water : it is these that constitute starch or fæcula . 2. Globules of a small size , a more irre- gular figure , and coloured either green or some other tint . They are not ...
... young plants and in coty- ledons , and soluble in boiling water : it is these that constitute starch or fæcula . 2. Globules of a small size , a more irre- gular figure , and coloured either green or some other tint . They are not ...
Page 18
... young shoot of the Cornus alba ( common dogwood ) may be conveniently used ; in these they may be readily detected by gently pulling the specimen asunder , when they unroll , and appear to the naked eye like a fine cobweb . Very ...
... young shoot of the Cornus alba ( common dogwood ) may be conveniently used ; in these they may be readily detected by gently pulling the specimen asunder , when they unroll , and appear to the naked eye like a fine cobweb . Very ...
Page 22
... young shoots of Lycopodium denticulatum . Some have thought that the spiral vessels terminate in those little openings of the cuticle called stomata ; but there does not seem to be any foundation for this opinion . DUCTS ( fig . 8 , 9 ...
... young shoots of Lycopodium denticulatum . Some have thought that the spiral vessels terminate in those little openings of the cuticle called stomata ; but there does not seem to be any foundation for this opinion . DUCTS ( fig . 8 , 9 ...
Page 41
... young shoots . They are particularly numerous , and highly developed , upon the petioles and the backs of the leaves of Ferns . They consist of cellular tissue alone , without any vascular bundles , and are known from leaves not only by ...
... young shoots . They are particularly numerous , and highly developed , upon the petioles and the backs of the leaves of Ferns . They consist of cellular tissue alone , without any vascular bundles , and are known from leaves not only by ...
Page 42
... young shoots of Pinus . Link remarks , that they are very similar in structure to the leaves of mosses . The term striga has occasionally been applied to them ( Dec. Théor . Elém . ed . 2. 376. Link , Elem , 240. ) ; but that word was ...
... young shoots of Pinus . Link remarks , that they are very similar in structure to the leaves of mosses . The term striga has occasionally been applied to them ( Dec. Théor . Elém . ed . 2. 376. Link , Elem , 240. ) ; but that word was ...
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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.