The worst named cactus?
This is Rhipsalis horrida with the fruit it made this year. The name 'horrida' doesn't apply to this soft fuzzy plant. There are several forms of it, and a whole host of names because the number of genes also varies (diploid and octaploid for instance). The flowers and fruit are produced in abundance in early spring, it spends the summer outside in the (mostly) shade.
Over the weekend a female Baltimore Oriole stopped and ate almost all of last year's (ripe) berries. The bird recognizes fruit even when the plant doesn't occur in either winter or summer living areas.