]> Botany Lammers, Thomas G., Givnish, Thomas & Sytsma, Kenneth J. Lammers, Thomas G., Givnish, Thomas & Sytsma, Kenneth J. T. G. Lammers, T. Givnish & K. J. Sytsma Lammers, Givnish & Sytsma Lammers, T. G., Givnish, T. & Sytsma, K. J.