Leaf-buds intermediate in size, short, rather thick, pointed to conical, open very late. Young leaves tinged with carmine on the under surface and along margin of upper surface making the prevailing color a light rose-carmine. Leaves of average size, medium to thick; upper surface dark green, slightly glossy, smooth to rugose; lower surface pale grayish-green, somewhat pubescent; veins not distinct; lobes five in number, terminal lobe acute; petiolar sinus deep to narrow, often closed and overlapping; basal sinus very wide and deep; lateral sinus wide at bottom narrowing towards top, deep; teeth intermediate in depth and width. Flowers open in mid-season or later, fully self-sterile; stamens reflexed. Fruit ripens in mid-season, keeps well if picked before overripe. Clusters of large to average size, rather long, tapering, varying from single-to double-shouldered, loose to compact; peduncle longish, rather thick; pedicel long to medium, somewhat slender, covered with very few warts, enlarged at point of attachment to fruit; brush short, pale green. Berries variable in size averaging large, slightly oval, black, glossy, covered with a moderate amount of blue bloom, do not shatter, somewhat soft. Skin thin, rather tender, adheres strongly to pulp, with slight amount of wine-colored pigment, not astringent. Flesh pale green, translucent, somewhat tender, vinous, not foxy, sweet at skin to agreeably tart at center, quality good. Seeds separate easily, one to four, average two or three, rather large and broad, nearly long. BLACK HAMBURG. (Vinifera.) =1.= Speechly, =1791=:11,179. =2.= _London Hort. Soc. Cat._, =1830=:75. =3.= Hoare, =1840=:142. =4.= _Mag. Hort._, =9=:245. 1843. =5.= _Ib._, =13=:43. 1847. =6.= _Am. Pom. Soc. Cat._, =1852=:54. (For culture under glass.) =7.= _Horticulturist_, =15=:125. 1860. =8.= _Mag. Hort._, =26=:110. 1860. =9.= _Can. Hort._, =11=:59. 1888.