=1.= Knoop _Fructologie_ =2=:61. 1771. =2.= Willichs _Dom. Enc._ =4=:190. 1803. =3.= _Lond. Hort. Soc. Cat._ 143, 148. 1831. =4.= Downing _Fr. Trees Am._ 2nd App. 156. 1876. =5.= Oberdieck _Deut. Obst. Sort._ 404. 1881. =6.= Mas _Le Verger_ =6=:51, fig. 26. 1866-73. =7.= Koch _Deut. Obst._ 568. 1876. =8.= Mathieu _Nom. Pom._ 452. 1889. =9.= _Cal. State Board_ Hort. 111 fig. 11. 1891. =10.= Lucas _Vollst. Hand. Obst._ 474. 1894. =11.= Lange _Allgem. Garten._ =2=:421. 1897. =12.= _Mich. Hort. Soc. Rpt._ 465. 1893. =13.= _Oregon Sta. Bul._ =45=:33. 1897. =14.= Waugh _Plum Cult._ 109. 1901. _Autriche Violette_ (_Pr. de_) 8. _Blaue Dattel Pflaume_ 8. Blue Egg-Plum? 2. Datte de Hungrie 13. _Dattelzwetsche_ 6. _Datte Violette_ 8. _Date de Hongrie_ 14. _Datte de Hongrie_ 4, 14. _Date Plum_ 7. D’Autriche 3. Frühe Dattelzwetsche 10. _Grosse u. Lange Früh Zwetsche_ 8. _Grosse Früh Zwetsche_ 8. Hungarian Date 9. _Hungarian Prune?_ 3, 14. Hungarica 7. Hungarian Prune 4, 11, 12. _Hungarian Plum_ 2. _Lange Violette Dattel Zwetsche_ 8. _Osterreichische Pflaume_ 8. _Prune-Datte_ 3, 6. _Prune Datte Violette_ 3. _Prune d’Autriche_ 6, 8. _Quetsche de Hongrie_ 8. _Quetsche Datte Violette_ 8. _Quetsche Datte_ 6, 8. Quetsche-Datte Violette 6. _Quetsche Hongroise_ 1. _Quetsche de Hongrie_ 6. _Sabel Pflaume_ 8. _Späte Dattel Pflaume_ 8. _Ungarische Pflaume_ 8. Ungarische Dattelzwetsche 5. _Ungarishe Sabel Pflaume_ 8. _Violette Dattelzwetsche_ 6. Violette Dattelzwetsche 8. _Türkische Zwetsche_ 8. _Ungarische Zwetsche_ 8. _Virginische Ludwig’s Pflaume_ 8. This plum, representing a type hardly known in America, may be a descendant of a species distinct from _Prunus domestica_, and if not, must at least be considered a well-marked division of the species named. It differs but little from typical Domestica varieties in habit of growth but the leaves are smaller, distinctly folded, and droop, giving an aspect to the tree distinct from the Domesticas in general. But it is the fruit that differs most. Fruit and stone are more elongated than in other varieties of its supposed species and the stone is larger, flatter, more pitted and more pointed at the base and apex. The stem, too, is longer than in the average Domestica. These differences in leaf, fruit and pit may be well seen if the color-plate of this variety be compared with those of well-recognized Domesticas. It is doubtful if Hungarian is worth cultivating in New York though it is larger than the commonly grown German Prune, with which it must be compared, and is fully equal if not better in quality but its type is unknown and consumers hesitate to buy the unknown. It is well worth a place in private collections.