Ribes cynosbati L.
CC = 5
CW = 3
MOC = 24
Family - Grossulariaceae
Habit - Shrub.
Stem - Ascending or arching, to 1.5 m. Armed with large spines at nodes. Lower stems often densely bristly-spiny.
Leaves - Petioles with both glandular and eglandular hairs. Blades broadly ovate, lobed, with doubly toothed margins, finely hairy.
Inflorescence - Small umbellate clusters of 1-4 flowers.
Flower - On stalks 5-12 mm long. Hypanthium cylindrical. Petals 1-2 mm long, white. Stamens only slightly exserted from hypanthium. Ovary spinescent.
Fruits - Globose, 6-12 mm, densely spiny, green to pale red, edible and tasty.
Flowering - April - June.
Habitat - Shaded bluffs, bottomland forests.
Origin - Native to North America.
Lookalikes - R. missouriense.
Other info. - This is one of the less common Missouri species of Ribes, occurring in scattered counties in the eastern half of the state. It is far more common northward, ranging across the northeastern U.S. and Canada. When in flower or fruit, it is easily distinguished from the much more common R. missouriense by its spinescent ovaries and fruits. Also, the flowers do not have the long-exserted stamens which give flowers of R. missouriense their unusual appearance. Vegetatively, the distinction can be made on the basis of the leaf petioles, which have glandular hairs in R. cynosbati.
Photographs taken at Crawford Estate Conservation Area, Clark County, MO, 7-8-2017, and at Salt Lick Point, Monroe County, IL, 5-1-2018 (SRTurner).