单词 | Viola tricolor |
例句 | The pansy, that protean offspring from lowly "johnny-jumper," occasionally comes very near embracing the entire gamut of color to which its name, Viola tricolor, would seem to entitle it. Eye Spy Afield with Nature Among Flowers and Animate Things 2012-02-24T03:00:23.760Z The garden-pansies are a hybrid race, won by crossing the Viola tricolor with the large flowered and bright yellow V. lutea. Species and Varieties, Their Origin by Mutation The Viola tricolor is often known as "three faces in a hood," and the Aconitum napellus as "Venus's chariot drawn by two doves." The Folk-lore of Plants The Amateur Botanist A primrose by a river's brim Primula vulgaris was to him, And it was nothing more; A pansy, delicately reared, Viola tricolor appeared In true botanic lore. Tobogganing on Parnassus Strictly analogous experiments with Viola tricolor and Lathyrus odoratus gave a very different result. Effects of Cross and Self Fertilisation in the Vegetable Kingdom And the same process takes place among the varieties until, for example, the wild kale becomes a cabbage, or the wild Viola tricolor, a prize pansy. Evolution and Ethics Viola tricolor has three subspecies, which have been elevated to the rank of species by some authors, and which may here be called, for brevity's sake, by their binary names. Species and Varieties, Their Origin by Mutation Viola tricolor—crossed and self-fertilised plants, left uncovered and cross-fertilised by bees, produced capsules in number: 10. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Viola tricolor—crossed and self-fertilised flowers on the crossed and self-fertilised plants of the 1st generation yielded seeds as: 69. Effects of Cross and Self Fertilisation in the Vegetable Kingdom This was evidently the case with the crossed plants of Viola tricolor, which ultimately quite overwhelmed the self-fertilised. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Viola tricolor.—Sets very few and poor capsules. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Summarizing the general result of this description we see that the original species Viola tricolor may be split up into larger and lesser groups of separate forms. Species and Varieties, Their Origin by Mutation Even the bees from different hives sometimes visit different kinds of flowers, as is said to be the case by Mr. Grant with respect to the Polyanthus and Viola tricolor. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Kitchener, Mr., on the action of the stigma. on Viola tricolor. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Nearly the same result followed with some crossed and self-fertilised plants of Viola tricolor. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Lubbock, Sir J., cross-fertilisation of flowers. on Viola tricolor. bees distinguishing colours. instinct of bees and insects sucking nectar. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Papillae of the Viola tricolor attractive to insects. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Viola tricolor. colours in flowers attract and guide insects. on Aristolochia. Effects of Cross and Self Fertilisation in the Vegetable Kingdom In my first experiments on Viola tricolor I was unsuccessful in raising seedlings, and obtained only one full-grown crossed and self-fertilised plant. Effects of Cross and Self Fertilisation in the Vegetable Kingdom In all three pots of Viola tricolor, naturally crossed plants the offspring of crossed plants flowered before naturally crossed plants the offspring of self-fertilised plants. Effects of Cross and Self Fertilisation in the Vegetable Kingdom Viola tricolor: seedlings from crossed and self-fertilised plants, the parents of both sets having been left to be naturally fertilised. Effects of Cross and Self Fertilisation in the Vegetable Kingdom |
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