unexactingness

Or again, such a variety may be less attractive to the creatures which feed upon it than the ordinarytype - and if so, it willgain a similar advantage over the ordinary species in any country in which the creatures which feed upon it are numerous and voracious; or again, a variety of such a plant may spring up whichflourishes on less food, or less heat, or under less favourable circumstancesof shelter, than the ordinary type - and if so, in this comparative unexactingness of its nature, it will gain an advantage over the ordinary kind which is of a more luxurious nature and can only flourish under more complex and favourable conditions.

The Spectator's take on Darwin, 1882 2009