Wolf and Japan. Triflora × Americana mollis. 1. Ill. Hort. Soc. Rpt. 424. 1905.

Listed with a number of plums which were tested by H. T. Thompson, Marengo, Illinois.

Wolf Clingstone. Americana mollis. 1. Wis. Sta. Bul. 87:18. 1901. 2. S. Dak. Sta. Bul. 93:13. 1905.

Clingstone Wolf. Wolf Cling 1.

Propagated and sent out in many cases as the true Wolf which it much resembles except that it is darker in color and is a clingstone. It seems to be more resistant to diseases and insects than Wolf.

Woolston. Domestica. 1. McIntosh Bk. Gard. 2:53. 1855. 2. Horticulturist 13:168. 1858. 3. Mas Le Verger 6:153, fig. 77. 1866-73. 4. Mathieu Nom. Pom. 454. 1889. 5. Can. Exp. Farms Rpt. 433. 1905.

Reine-Claude de Woolston 5. Reine-Claude Noire de Woolston 3. Woolston Black 4. Woolston Black Gage 1. Woolston Gage 2. Woolston’s Black Gage 3, 4. Woolston’s Violette Reine-Claude 4.

Raised by a Mr. Dowling of Southampton, England. Tree vigorous, productive; fruit medium in size, roundish, purplish-black; suture not pronounced; cavity deep and wide; stem medium in length, slender; flesh yellow, juicy, sweet, sugary, tender, aromatic; very good; freestone; mid-season.

Wooster. Munsoniana. 1. Wis. Sta. Bul. 63:65. 1897.

Mentioned in the preceding reference as not being hardy in Minnesota.