Gerrit van Iterson
Gerrit van Iterson Jr ( Roermond , August 19 , 1878 – Wassenaar , January 4 , 1972 ) was a Dutch botanist and professor who developed a mathematical approach to plant growth ( phyllotaxis ) . 
<triplet> Gerrit van Iterson <subj> Roermond <obj> place of birth <subj> August 19, 1878 <obj> date of birth <subj> January 4, 1972 <obj> date of death