I believe your Ribes roezlii is actually R. amarum (Bitter Gooseberry). This is a typical front country Goose- one of which can be seen immediately left, inside the Rattlesnake canyon entrance; if the fruit is hairy, it will be a variety: Hoffmannii.
Nice photos. Saw this flower yesterday on Middle Fork trail, West Cold springs trail to Tangerine falls. Common along this trail. A nice plant at the waterfall too blooming with spines. Does look like R. amarum: http://calphotos.berkeley.edu/