This variety is a seedling from the village of Walpurgisburg, near Cologne, Germany, originating about 1845. Tree vigorous, productive; fruit attached in pairs, very large, roundish-cordate, compressed; suture shallow, extending entirely around the fruit; stem slender, rather long; cavity wide, shallow, sides only slightly raised; skin firm, adherent, glossy, dark cherry-red changing to almost black; flesh firm, dark red, juicy, aromatic, vinous; pit of medium size, oval, dark red; ripens late in July. =Bigarreau de Zeisberg.= _P. avium._ =1.= Thomas _Guide Prat._ 20, 190. 1876. _Zeisbergische Kirsche._ =2.= _Ill. Handb._ 31 fig., 32. 1867. _Cerise de Zeisberg._ =3.= Mas _Pom. Gen._ =11=:35, 36, fig. 18. 1882. Oberdieck received this variety, which bears the name of its originator, from Hanover, Prussia, Germany, in 1857. Fruit very large, obtuse-cordate; suture wide, flat on the dorsal side, extending slightly beyond the apex; stem long, rather slender, set in a flaring cavity; skin glossy, brownish-black, later becoming black, adhering to the pulp; flesh firm, dark red, juicy, pleasant, with an aromatic sweetness when mature; season the last of June. =Bigarreau Zschedowitzer Schwarze.= _P. avium._ =1.= Thomas _Guide Prat._ 23. 1876. Listed in the reference given. =Bigarreautier à Petit Fruit Noir.= _P. avium._ =1.= Noisette _Man. Comp. Jard._ =2=:503. 1860. A mediocre but productive cherry ripening in August. =Bigarreautier à Petit Fruit Rose.= _P. avium._ =1.= Noisette _Man. Comp. Jard._ =2=:503. 1860. A variety raised from seed in 1824; tree vigorous; stem long; flesh tender, white, sugary; quality fair; July. =Bill and Coo.= _P. avium._ =1.= Downing _Fr. Trees Am._ 454. 1869. Two lovers made the original tree their haunt, hence, the name "Bill and Coo." This variety originated on the grounds of Professor J. P. Kirtland, Cleveland, Ohio. Fruit of medium size, regular heart-shaped, flattened at the apex; stem long, slender; cavity deep; suture broad on one side, the opposite side knobby; color amber-yellow, marbled with clear red; flesh rich, delicate, sweet; ripens early in June. =Bismarck.= _P. avium._ =1.= Hoopes, Bro. & Thomas _Cat._ 20. 1907. This variety is a Sweet Cherry from near Baltimore, Maryland. Fruit very large, dark red, firm, sweet, juicy and rich; vigorous and productive; ripens the first of July. =Black American.= Species? =1.= _Lond. Hort. Soc. Cat._ 47. 1831. Listed without description in this reference. =Black Bigarreau.= _P. avium._ =1.= _Knoop Fructologie_ =2=:35, 37, 38. 1771. =2.= Prince _Pom. Man._ =2=:130. 1832. _Bigarreau hâtif._ =3.= _Le Bond Jard_. 345. 1882. _Bigarreau noir Hâtif._ =4.= Hogg _Fruit Man._ 285. 1884.