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Updated: June 9, 2025
Many of our orchidaceous plants absolutely require the visits of moths to remove their pollen-masses and thus to fertilise them. Hence I have very little doubt, that if the whole genus of humble-bees became extinct or very rare in England, the heartsease and red clover would become very rare, or wholly disappear.
On the contrary, plants with very little special adaptation to any particular insect, like the water-lilies and the poppies, are obliged to flaunt forth in very brilliant hues, and to run to very large sizes in order to attract the attention of a great number of visitors, one or other of whom may casually fertilise them; while plants with very special adaptations, like the sage and mint group, or the little English orchids, are so cunningly arranged that they can't fail of fertilisation at the very first visit, which of course enables them to a great extent to dispense with the aid of big or brilliant petals.
It would also have afforded a more perfect knowledge of the copper mines at Katata, a quantity of which comes to Uruwa. Hamed describes the roads as easy to travel over, for the track lay across an undulating country, intersected by many small insignificant streams, running from north to south, which only contribute to fertilise the land, and present no obstacles whatever.
In Christ, God is well pleased; and from Him incarnate, streams of divine complacent love pour out to freshen and fertilise the earth. The disappearance of the heavenly choristers does not seem to have been so sudden as their appearance.
O Legislatress, source of just constitutions; O Democracy thou whose fundamental dogma it is that all good things come from the people, and that where there is no people to fertilise and inspire genius there can be none, teach us to extricate the diamond from among the impure multitudes!
Nearly all our orchidaceous plants absolutely require the visits of insects to remove their pollen-masses and thus to fertilise them. Humble bees alone visit red clover, as other bees cannot reach the nectar.
The latter degenerate and die, the former fertilise the ova, and the fertilised ova develop only into females. The chief difference in this case then is that the reduction in the male to the N or simplex condition takes place in two stages, one in the parthenogenetic ovum, one in the gametes of the mature male.
Well, it seems that there are lots of orchids known the flower of which cannot possibly be used for fertilisation in that way. Some of the Cypripediums, for instance; there are no insects known that can possibly fertilise them, and some of them have never be found with seed." "But how do they form new plants?" "By runners and tubers, and that kind of outgrowth. That is easily explained.
In olden times, the histories said, Ireland had sent a stream of scholars over the waste places of Europe to fertilise them and make them fruitful. "Now," he thought bitterly, "we send 'bosses' to Tammany Hall...."
Even within the limits of the same genus, we meet with this same difference; for instance, the many species of Nicotiana have been more largely crossed than the species of almost any other genus; but Gartner found that N. acuminata, which is not a particularly distinct species, obstinately failed to fertilise, or to be fertilised, by no less than eight other species of Nicotiana.
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