Ribes hudsonianum Ribes hudsonianum Ribes hudsonianum is a North American species of currant, known by the common name northern black currant. "Ribes hudsonianum" grows in moist wooded areas, such as mountain streambanks and in swamp thickets. They are upright to erect shrubs growing one half to 2 meters (20-80 inches) tall. They are aromatic, with a strong scent generally considered unpleasant. Stems are covered in shiny, yellow resin glands that lack spines or prickles. Leaves are up to 10 centimeters long, divided into three, or rarely five, sharp-toothed lobes, having long hairs on the undersides, studded with yellow glands. Inflorescences are erect,
Acer nigrum more deeply grooved bark, slightly smaller seeds, and thicker petioles. Hybrids are intermediate in their characteristics. The geographic range of "A. nigrum" is slightly more limited than the sugar maple, encompassing much of the Midwestern United States, portions of the Eastern United States, and the southeast of Canada in southern Ontario. The black maple's mature height ranges from 21 to 34 meters (70 to 110 feet). This species is used similarly to the "A. saccharum", for timber as hard maple, for landscaping, and for maple syrup production. Acer nigrum Acer nigrum (black maple) is a species of maple closely related