In Britain, the year 1937 is likely to be memorable in the history of cultivation of many species and varieties of plants belonging to the genus Primula, as witnessing, for the first time, attacks of great severity by the nematode, Anguillulina dipsaci in a number of plantations of Primulas, reducing the vitality of the plants wherever it occurred, and in many instances causing complete destruction of certain species. The plants classed as members of the Candelabra Section, which includes some of the finest and most extensively grown species and varieties in the whole genus, proved particularly susceptible but, while members of many of the other Sections of Primulas did not escape attack, the injury inflicted was not usually of such high order of severity.