In most flowers belonging to other orders the stigma secretes a little viscid matter.

在大数属于其他目的花中， 柱头会分泌性物质。

A pollinium, when highly developed, consists of a mass of pollen-grains, affixed to an elastic foot-stalk or caudicle, and this to a little mass of extremely viscid matter.

高度发育的花粉由大量花粉粒组成， 附着在有弹性的足柄或叶柄上， 而这又是小团极其稠的物质。

When an insect visits a flower of this kind, it rubs off some of the viscid matter, and thus at the same time drags away some of the pollen-grains.

当昆虫访问这种花时， 它会擦掉些性物质， 从而同时带走些花粉粒。

Now, in certain orchids similar viscid matter is secreted, but in much larger quantities by one alone of the three stigmas; and this stigma, perhaps in consequence of the copious secretion, is rendered sterile.

现在， 在某些兰花中分泌出类似的性物质， 但数量要， 仅由三个柱头中的个分泌；这种耻辱， 也许是由于大量分泌物的结果， 变不育了。

But as the excretion is extremely viscid, it is no doubt a convenience to the aphides to have it removed; therefore probably they do not excrete solely for the good of the ants.

但由于排泄物非常稠， 将其清除无疑是为了方便蚜虫；因此，它们可能不仅仅是为了蚂蚁的利益而排泄。

With respect to the second chief peculiarity, namely, the little mass of viscid matter attached to the end of the caudicle, a long series of gradations can be specified, each of plain service to the plant.

关于第二个主要特征， 即附着在茎端的少量性物质，可以指定长串等级， 每个等级都对植物有明显的作用。

The passage is narrow, and is roofed over by the column, so that a bee, in forcing its way out, first rubs its back against the viscid stigma and then against the viscid glands of the pollen-masses.

通道很窄，被柱子盖住， 所以蜜蜂在强行出路时， 首先用背部摩擦性柱头， 然后摩擦花粉团的性腺体。