240 BOTANICAL GAZETTE [march 



he was transferred to Hohenwestedt where he remained until 1874. His 

 official work was repugnant to him, and during this whole time he remained 

 faithful to his love of science, teaching in the agricultural school of Hohen- 

 westedt and soon taking a prominent position as a collector. In addition 

 to all this work he began to issue not only his herbaria for agricultural 

 purposes, but also the first hundred of his comprehensive seed collections. 

 In 1874, he was called by Eichler, who at that time was director of the 

 botanical garden at Kiel, to be his assistant. Here he put in order the 

 Lucas herbarium and devoted himself with great zeal to the cryptogamous 

 herbarium. Eichler was called to Berlin in 1879, and in 1880 he invited 

 Professor Hennings to join him, and confided to him the arrangement of 



While 



crypt 

 His 



made it possible for him to complete speedily the work assigned to him. 



From about 1885 he devoted himself almost exclusively to fungi. It is 

 true that during this period he issued two fascicles of the algae of the Mark 

 Brandenburg, but his interest centered in the mushrooms of this region 



and 



and later, when the museum received abundant collections from tropical 

 regions, he devoted himself to the fungi of the whole world. His fine feeling 

 for form enabled him in a short time to become an authority in all systematic 

 questions regarding fungi. When in 1890 he was appointed assistant 

 Custos, and in 1891 Custos of the Botanical Gardens, he had already brought 

 together in Berlin one of the best collections of fungi in the world. 



In 1902, as a well-deserved recognition of his work, he was appoint 

 royal professor. Until his death he continued indef atigably at his wor ', 

 the division of the fungi assigned him in the great museum. 



Twelve months ago the death of his son paralyzed his energies 

 stole the pen from the busy hand. 



Hennings in his special domain was self-taught, and his entire actm y 

 must be judged from this point of view. He possessed a fine sense of form, 

 which made it possible for him at once to put every newly discovered species 

 in the right place in the system. By this his work was greatly faclh ^ k ' 

 and this explains his easy command, not only of the fungi of the . ^ 

 but also of tropical regions. He published in twenty years 250 pap^ ^ 

 which dealt with the fungi of innumerable tropical regions. He ma e^ 

 specialty of the mushrooms of the German colonies and of Brs T* 

 dominated the difficult domain of the Hymenomycetes in a masterly m ^ 

 ner, so that he discovered many unexpected treasures even at the ga 

 Berlin. 



reserved-sometimes 



almo st 



repellent— man, suspected that he had a really childlike soul, one p 





