Cool Puerto Rican Plants - Jatropha gossypiifolia
One of my favorite plants from Puerto Rico was Jatropha gossypiifolia (also known as bellyache bush). I haven't done much research into it, but a quick search tells me this plant is in the Euphorbiaceae and is being investigated for use as a biofuel. Apparently the seeds are rich in oil. While native to Puerto Rico, J. gossypiifolia is invasive to Australia, and there are some studies done there looking at the effects of fire on this plant. I am not sure why it is called belly-ache bush, but there must be some nasty chemicals found in this plant.
What is so cool about J. gossypiifolia?
Look at the trichomes on the nodes of the stems. Craaaazy. Not sure what is in these glandular hairs, but they do make the plant sticky.
It also has these beautiful little red flowers.
And - the seeds are awesome, it appears that they have explosive seed dispersal (one of the fruits exploded while I was trying to ID other plants) and eliasomes for ant secondary dispersal. Eliasomes are fatty bodies produced by some seeds to encourage ants to carry them away.
I found this plant in the dry forest of Guanica, in the southern part of the island. Guanica was my favorite forest we visited.