Note:  Do not rely on this information. It is very old.

Loudon

Loudon, John Claudius (1783-1843), botanist and horticulturist, was born in Lanarkshire. In 1803 he published Observations on laying out Public Squares, and in 1805 a Treatise on Hot-Houses. Besides encyclopedias of gardening and plants and other works on botany he published Arboretum et Fruticetum Britannicum.