Ask Mr. Smarty Plants

You have given a pretty good description of a gooseberry or currant, Ribes sp. We think that the plant you describe is probably White-stem gooseberry (also called White-stem currant), Ribes inerme. Ribes hirtellum, hairy-stem gooseberry, a native to the Great Lakes region and often found in Colorado landscapes is another possibilities. There are other Ribes species native to Colorado, but the characteristics you listed seem to best fit White-stem currant.

Currants and gooseberries, many of which make wonderful jellies, were once an important fruit crop in the United States. When the genus, Ribes was discovered to be an alternate host for White Pine Blister Rust, war was declared on currants, especially on the European native black currant, Ribes nigrum, early in the twentieth century. The fungal disease, which needs both pines and currants as hosts for the two parts of its life cycle, is damaging to infected Ribes plants, but devastating to Pinus strobus (eastern white pine) and other North American 5-leaf pines. The economic importance of pines necessitated drastic measures to protect the pine trees. Those measures included a federal law (since rescinded) mandating the eradication of all known Ribes nigrum plants and making it illegal to possess them. Though the federal ban is no longer in effect, some states still prohibit growing European black currant. Consequently, currants and gooseberries, still an important fruit crop in Europe, is today little-known in most of North America.