First Book of Botany, EtcWilliam Collins, 1872 - 118페이지 |
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16 Maps acrogenous anther arranged ATLAS attached bark bearing BOTANY bracts buds bundles of vessels called calyx carpels cavity cells and vessels cellular centre cloth lettered coloured common composed compound leaf consisting of 32 containing corm corolla cotyledons covered dandelion dead-nettle Describe dicotyledonous embryo endogenous Europe exogenous expand Explain the terms ferns filaments fleshy floral axis floral envelopes Floral Symmetry flower-stalk flowering plants flowerless plants folded frond fruit gamopetalous GEOGRAPHY germination Give an example grain hairs Illustrations Imperial inflorescence irregular leaf leaf-stalk leaflets leaves Map-showing matter meant monocotyledonous nourishment numerous flowers opening orchids organs outer ovary ovule palms peduncle petals petiole pimpernel pinnate pistil pith pitted vessels placentas pollen produced receptacle roots scattered seed seed-vessel seen in fig sepals separate sessile showing soil spore-case spores sprouting stalk stamens stamens and pistil stem stigma structure style succulent tion tissue trees umbel various whorl World-showing young plant
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84 페이지 - In the style-wort (Stylidium) the stamens and pistil are united in a common column which projects from the flower ; this column is very irritable at the angle where it leaves the flower, and when touched, it passes with a sudden jerk from one side to the other, and thus scatters the pollen. In the hazel, where the pollen is in one set of flowers and the pistil in another...
89 페이지 - Taraxacum], showing the coats of the ovule surrounding the nucleus n, which is inverted, so that its base ch, where the chalaza exists, is removed from the base or hilum of the ovule h, while the foramen / is near the base. The connection between the base of the ovule and the base of the nucleus at ch is kept up by means of the raphe or cord r.
71 페이지 - In the same manner the flowering has its regular time : the mezereon and snowdrop push forth their flowers in February ; the primrose in the month of March ; the cowslip in April ; the great mass of plants in May and June; many in July, August, and September ; some not till the month of October, as the meadow saffron ; and some not till the approach and arrival of winter, as the laurustinus and arbutus.