Wednesday, December 23, 2009

Cauliflory





The colourful fruits brought more than a cheerful respite from the dull green of the jungle. It has a sour but juicy mesocarp which quenches the thirst of us thirsty hikers. It is only found in Borneo.

Cauliflory is the habit of many tropical trees to bear flowers and fruits on the main trunk rather than on lofty, leafy branches. It is an example of niche targetting in the natural world. While most other trees were competing to attract arboreal pollinators and seed dispersal agents high up in the canopy, these cauliflorous trees were offering fruits and nectar to bottom dwellers nearer to forest floors. Over the many years of evolution, the mass duplication of this design across trees from very diverse families, from both the New and Old World implies that this niche exploitation has, by and large, been quite successful.

More recently, in our human world, a similar strategy of our banks to offer fruits and nectar to bottom dwellers does not appear to be as rewarding....