Ribes name to the popular blackcurrant cordial Ribena. The genus also includes the group of ornamental plants collectively known as the flowering currants, for instance "R. sanguineum". There are restrictions on growing some "Ribes" species in some U.S. states, as they are the main alternate host for white pine blister rust. Blackfoot Indians used blackcurrant root "(Ribes hudsonianum)" for the treatment of kidney diseases and menstrual and menopausal problems. Cree Indians used the fruit of "Ribes glandulosum" as a fertility enhancer to assist women in becoming pregnant. Currants are used as food plants by the larvae of some Lepidoptera species. Ribes
Acer nigrum Acer nigrum Acer nigrum (black maple) is a species of maple closely related to "A. saccharum" (sugar maple), and treated as a subspecies of it by some authors, as "Acer saccharum" subsp. "nigrum". Identification can be confusing due to the tendency of the two species to form hybrids. The simplest and most accurate method for distinguishing between the two trees is the generally three-lobed leaves of the black maple versus the generally five-lobed leaves of the sugar maple. The leaves of the black maple also tend to have a "droopy" appearance. Other differences that are not as pronounced include darker,