Kelsey, the first of the Triflora plums introduced into America, was brought into the country by a Mr. Hough of Vacaville, California, in 1870, through the United States consul in Japan. John Kelsey of Berkeley, California, obtained trees from Hough and propagated it in his nursery to a limited extent. The first fruit was shown by Kelsey in 1877, though fruit is said to have been produced in 1876. In 1883, W. P. Hammon and Company, Oakland, California, secured stock of this plum from the heirs of Mr. Kelsey and the following year extensive sales were made. The plum was named in honor of the man who did most to bring it before the public. The American Pomological Society added the Kelsey to its fruit catalog list in 1889. The following description is compiled. Tree vigorous, upright, vasiform, tender, productive, an early and regular bearer; leaves somewhat scant, small, lanceolate, narrow; blooming season early; fruit very late, season long; keeps and ships unusually well; large, cordate, conical, halves unequal; suture variable in depth; apex pointed; color rather unattractive yellow, tinged and splashed with red, often overspread with purple, with attractive bloom, more or less marked with conspicuous dots; stem sometimes adhering poorly to the fruit; skin tender; flesh delicate yellow, juicy, firm and meaty, rich, pleasant, aromatic; good to very good; stone clinging unless well ripened, small, in an irregular cavity larger than the pit. KERR _Prunus triflora_ =1.= _Ga. Hort. Soc. Rpt._ 52. 1889. =2.= _Am. Gard._ =12=:307, 501. 1891. =3.= _Ibid._ =13=:700. 1892. =4.= Kerr _Cat._ 1894. =5.= _Cornell Sta. Bul._ =62=:25. 1894. =6.= _Ga. Hort. Soc. Rpt._ 95. 1895. =7.= _Ala. Sta. Bul._ =85=:443. 1897. =8.= _Am. Pom. Soc. Cat._ 41. 1899. =9.= _Cornell Sta. Bul._ =175=:136. 1899. =10.= Waugh _Plum Cult._ 137. 1901. =11.= _Ga. Hort. Soc. Rpt._ XIII. 1904. =12.= _Ohio Sta. Bul._ =162=:256, 257. 1905. Hattankio 1. _Hattankio_ 7. Hattankin No. 2. 2, 3. _Hattonkin No._ 2. 4, 5, 10. _Hattonkin_ 9. _Hattankio No._ 2. 6, 11. _Hattankio Oblong_ 9, 11. Hattankio 10. _Hattan_ 10. _Hytankio_ 10. _Hytan-Kayo_ 10.