单词 | polypetalous |
例句 | Reseda, rē-sē′da, n. a genus of polypetalous plants, the mignonette family. Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) 2012-01-30T03:00:13.887Z Drosera�ce�, a nat. ord. of polypetalous Dicotyledons, consisting of insectivorous marsh herbs, whose leaves are usually covered with glands or glandular hairs. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z In some polypetalous corollas, as that of the vine, the petals are separate at the base and adhere by the apices. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z Irregular Flowers may be polypetalous, or nearly so, as in the papilionaceous corolla; but most of them are irregular through coalescence, which often much disguises the numerical symmetry also. The Elements of Botany For Beginners and For Schools Cohesion of the sepals in a normally polypetalous calyx renders the latter gamosepalous, and is not of uncommon occurrence, to a partial extent, though rarely met with complete. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Rhamnus, ram′nus, n. a genus of polypetalous shrubs and trees, including the buckthorn. Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) 2012-01-30T03:00:13.887Z Well-defined polypetalous and gamopetalous genera sometimes occur in the same order, and even Monocotyledons and Dicotyledons are classed together where they have some striking physiological character in common. Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 The general name of polypetalous is given to corollas having separate petals, while monopetalous, gamopetalous or sympetalous is applied to those in which the petals are united. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z This is polypetalous, except that two of the petals cohere, usually but slightly. The Elements of Botany For Beginners and For Schools Dialysis of the corolla is likewise of frequent occurrence, either partially or to such an extent as to render the corolla truly polypetalous. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Hence there can be no objection to the view, that the heaths have arisen in an analogous manner from their polypetalous ancestors. Species and Varieties, Their Origin by Mutation The same relationship, but in a much less degree, exists in the case of median prolification, as that aberration is likewise most commonly met with in polypetalous flowers. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The absolute frequency of this occurrence seems to be greatest in those flowers which are normally polypetalous. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants It is more common among polysepalous and polypetalous plants than in those in which the sepals or petals are united together. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants In the last-named genus, C. rotundifolia has been found with polypetalous flowers in a wild state in the mountains of Canton Neufchatel, Switzerland, and gave rise to the creation of a new genus. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants The polypetalous genera Pyrola, Ledum, and Monotropa among the sympetalous heaths, are a remarkable instance of this. Species and Varieties, Their Origin by Mutation In the case of polypetalous, or rather dialypetalous flowers, the petals may be very largely increased by multiplication, as in roses, anemones, pinks, &c. Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants |
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