Off of trail, in the way of the trail
Biggest one I've seen to date. Trunk is at least 10ft long
This plant is new to me. Leaves are quite large: 10 to 15 cm approximately. Being eaten by that caterpillar I didn't see at the time. No sign of flowers. The closest leaf I could find is that of the Pacific Waterleaf but I don't think I'm right with this identification. Thanks for considering this.
Flowering on Jan 1
Best guess. Plant was tightly adhered to the trunk - photo 4 is my attempt to show something of the bottom side. Leaves are not shiny - otherwise this plant could fit Schofield's description of the most common R. species for our area.