[R] strsplit

[Joël Baumann]

Hello!

I have the following problem:

I have a file in R that has in the first row three informations in one 
row that I would like to in three different rows.

The first row looks like this:

GenusA_SpeciesC_Tree
GenusA_SpeciesF_Tree
GenusB_SpeciesA_Shrub
...

I tried with strsplit and and substring but I don't get any solution. I 
know I can do this in Excel, but in R would be much nicer!

Thanks for helping me.

Joël Baumann