30 



Jac. Hartz. Hartz, Jacob Magnus Ludvig, born 1871 in Randers. Pharmaceutic 

 exam. 1896. Well-known florist who has also collected many exquisite 

 fungi on his numerous excursions to all parts of the country. 



Nic. Hartz. Hartz, Nicolai Eg Kruuse, born in Randers August 23. 1867. 

 Ph. D. 1909. Well known palaeophytologist. Brother of Jac. Hartz. 



Helms. Helms, Johannes, born Jan. 29. 1865 in Horsens, son of Jac. Helms, 

 apothecary. Verderer at the Tisvilde— Frederiksvserk district, later on 

 at Feldborggaard and Silkeborg. Has studied several parasitic fungi 

 on forest trees especially on Betula. 



Helweg. Helweg, Leopold Hans Andreas, born in Copenhagen March 2. 

 1851. Horticuhural exam. 1877. As experimenting manager to the 

 Society for the Improvement of Cuhivated Plants as well as editor 

 of the "Gartnertidende" (1886-1901) he comunicated with Rostrup 

 and often brought him diseased cultivated plants. 



Hofman Hofman (Bang), Niels Erik, born at Hofmansgave July 18. 1803, 



(Bang), son of the botanist N. Hofman Bang. A faithful friend of Rostrup's 



to whom he sent a number of diseased plants from his fields, his 



garden 6. wood. Owner of the family;=estate of Hofmansgave 1855 



till he died in 1886. (Orbituary see Medd. fra Bot. For. 11')- 



C. P.Ja* Jacobsen, Christian Peter, born Aug. 31. 1841 near Aabenraa. 

 cobsen. Passed exam, for board^school teachers. Edited together with J. L. Jen« 



SEN "Landmandsblade" (Farmer's Magasine) 1868—1881, to which P. 



Nielsen and Rostrup often contributed with pathological articles. 



Member of The Society for the Improvement of Cultivated Plants. 



Established in 1872 the "Markfrekontoret" (The Grain Office) in 



company with J. L. Jensen and Wendt. Co-operated with Rostrup; 



made many experiments with clover etc. with which Rostrup partly 



assisted him and partly profited of; he had an open eye to the signi« 



licance of the diseases of plants to the cultivated plants of the fields. 



Rostrup has written his biography in "Meddelelser fra Markfrokon* 



toret" Kebenhavn 1896 c. icon. 



H. Jacobs Jacobsen, Hans, born March 1. 1815 at Melby near Senderborg, 

 sen. died July 25. 1891. Nurserysman at the Haesede nursery near Naest? 

 ved (see Med. 'fra Bot. For. II "« 6. II ^os). 



J. P.J. Jacobsen, Jens Peter, born April 7. 1847 in Thisted, died 1885. 

 Studied botany 1867—74 (Desmidiaceae). Besides being a poet he was 



