I've got a Schefflera actinophylla that's been in a pot for several years. It winters in the house and summers on the front porch. About a year ago something started sprouting from the soil. I kept waiting for it to turn into something recognizable, but so far it's not ringing a single bell for me. It's sprouting from the soil in different parts of the plant, like it's coming up from the roots rather than reseeding. The plant has no leaves as such, just "stem". It has never had leaves, flowers, seeds, etc. It's always looked just like you see here. It's not fleshy (it's not Rhipsalis). I keep thinking it reminds me of Equisetum arvense, but the arrangement is all wrong. Though...it does resemble it in the way it feels. I'm going to have a "duh" moment when you guys ID this, I'm sure. But I can't figure it out.