Tree large, medium in vigor, upright-spreading, open-topped, productive; trunk stocky, rough; branches thick; branchlets pubescent; leaves folded upward, one and seven-eighths inches wide, four and one-quarter inches long, oval, thick, leathery; upper surface rugose; margin serrate or crenate, with small, dark glands; petiole thick, tinged red, pubescent, with from one to three globose glands. Fruit mid-season; when well grown nearly one and one-half inches in diameter, roundish-oval, the smaller specimens rather ovate, dark purplish-red, overspread with thick bloom; stem surrounded by a fleshy ring at the cavity; skin tender, sour; flesh golden-yellow, dry, firm, sweet, mild; of good quality; stone semi-free or free, seven-eighths inch by three-quarters inch in size, roundish-oval, flattened; ventral suture prominent; dorsal suture widely and deeply grooved. COMPASS _Prunus besseyi_ × _Prunus hortulana mineri_ =1.= _Northwestern Agr._ 348. 1895. =2.= _Vt. Sta. Bul._ =67=:10. 1898. =3.= _Ia. Sta. Bul._ =46=:266. 1900. =4.= Budd-Hansen _Am. Hort. Man._ 294. 1903. =5.= _S. Dak. Sta. Bul._ =93=:13. 1905. _Compass Cherry_ 2. _Heideman Sand Cherry._ In 1891 H. Knudson of Springfield, Minnesota, pollinated the Sand Cherry with pollen from the Danish Morello cherry and the Miner plum. The seed of the resulting cross, beyond question that of the Sand Cherry and the plum, was planted on August seventh of the same year and, in 1894 produced fruit for the first time. In 1893 C. W. H. Heideman of New Ulm, Minnesota, secured a cion from this tree and another the following year. In 1895 Heideman introduced as his own, under the name of Heideman Sand Cherry, a hybrid between the Sand Cherry and a plum. In the controversy which followed it developed that the two hybrids were identical and that Knudson was the real originator. Subsequently C. W. Sampson of Eureka, Minnesota, introduced Knudson’s plum under the name Compass. The variety is of interest to plant-breeders and may have some commercial value in the Northwest but is worthless for its fruit in New York. Tree inferior in size, spreading, open-topped, productive; branches and branchlets slender, the branchlets marked by very conspicuous, large, raised lenticels; leaf-buds plump; leaves folded upward, one and one-eighth inches wide, three inches long; margin serrate; petiole tinged red, glandless or with from one to three globose glands usually on the base of the leaf; blooming season late, of medium length; flowers appearing after the leaves, seven-eighths inch across, creamy-white as the buds unfold; borne on lateral spurs, in threes and fours.