单词 | Hottonia |
例句 | Its Latin name is Hottonia palustris; it is called Hottonia in honour of a German botanist, Professor Hotton, of Leyden. Country Walks of a Naturalist with His Children For instance, the papillae on the long-styled stigma of Hottonia palustris are more than twice the length of those in the other form. The Different Forms of Flowers on Plants of the Same Species Hottonia is dimorphic, with pollen of very different sizes in the two forms. More Letters of Charles Darwin — Volume 2 I have just examined Hottonia, grand difference in pollen. Life and Letters of Charles Darwin — Volume 2 The flowers of Hottonia are cross-fertilised, according to Muller, chiefly by Diptera. The Different Forms of Flowers on Plants of the Same Species This is the case with Hottonia palustris in the ratio of 100 to 83. The Different Forms of Flowers on Plants of the Same Species The two forms of Hottonia thus agree closely in most respects with those of the heterostyled species of Primula. The Different Forms of Flowers on Plants of the Same Species On the contrary, there is sometimes the widest difference in this respect, as between the two illegitimate unions of Pulmonaria angustifolia and of Hottonia palustris. The Different Forms of Flowers on Plants of the Same Species The same rule applies to the two illegitimate unions of some dimorphic species, namely, Primula vulgaris and Pulmonaria angustifolia; but it entirely fails in other cases, as with Hottonia palustris and Linum grandiflorum. The Different Forms of Flowers on Plants of the Same Species |
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