After a long and severe illness Prof. Dr. A. A. Pulle died on February 28th 1955. It was only early in December of last year that Pulle informed the board of our Society that he felt no longer able to continue his task as secretary of the editorial board of the “Acta Botanica Neerlandica” and asked to be replaced by a younger botanist. It was planned to give him in this number of our periodical some warm words of thanks for the very important services he had rendered for the sake of promoting botanical science in our country. Our hope that he would have had some more time to live has been in vain. We can now state only our thankfulness to his memory and give a retrospective view on the life of one of our best members. August Adriaan Pulle was born on January 10th 1878 at Arnhem. A remarkable day for a plant taxonomist, it being exactly 100 years after the death of Linnaeus. He passed his schoolyears in his native town and during those years he was active in botanising in the interesting surroundings of that city. His floristic knowledge of the Netherlands got a sound basis in those years. In later years, he occasionally used to refer to those happy moments when he discovered rare species on these private excursions.