Note 4 — ON THE UTILITY TO FLOWERS OF THEIR BEAUTY.
Reading edition
Sometimes the same result is produced by "the massing of small flowers into dense cushions of bright colour."4 This, as is well known, is of common occurrence with Alpine flowers; and this mode of growth, as well as the great size of many Alpine blossoms as compared with that of the whole plant, and the great brilliance of Alpine plants as compared with their congeners of the lowlands, have all been explained by reference to the comparative rarity of insects in the Alpine heights, and the consequent necessity, if the plants are to survive, that they should offer strong attractions to their needful friends.5 A similar explanation has been offered for the brilliant colours of Arctic flowers.6