Dr. Lammerts has grown two large populations of Ceanothus seedlings from hybrid plants, it is pertinent for Dr. Lammerts to write on speciation in Ceanothus in relation to the previous article, "Post-Fire Regrowth Of Adenostoma fasciculatum h. and a. and Ceanothus crassifolius torr. In Relation To Ecology And Origins" by Dr. George F. Howe.