Vine Maple or Acer circinatum
This very famous "Fairy Bridge" in the Hall of Mosses Trail of the Hoh Rain Forest in Olympic National Park. Mosses include stair-step moss, cattail moss, spike mosses and club mosses.
Mosses in the Hall of Mosses trail include;
Cat's Tail Moss (Pseudisothecium stoloniferum)
Stairstep Moss (Hylocomium splendens)
Oregon Spike-Moss (Selaginella oregana)
Fan Moss (Rhizomnium glabrescens)
Lanky Moss (Rhytidiadelphus loreus)
Broom Moss (Dicranum scoparium)
Dendroalsia Moss (Dendroalsia abetina)
Menzie's Tree Moss (Leucolepis acanthoneura)
Oregon Beaked Moss (Kindbergia oregana)
Hypnum circinale
Waved Silk-Moss (Plagiothecium undulatum)
Neat Feather-Moss (Pseudoscleropodium purum)
Shingle Moss (Neckera pennata)
Common Feather-Moss (Kindbergia praelonga)
Rough Goose Neck Moss (Hylocomiadelphus triquetrus)
Isothecium spp.
Mouse-tail Moss (Pseudisothecium myosuroides)
Haircut Mosses (Polytrichum spp.)
Dusky Fork-Moss (Dicranum fuscescens)
Pendulous Wing-Moss (Antitrichia curtipendula)
Lyell's Bristle-Moss (Pulvigera lyellii)

"Acer circinatum" is a species of maple native to western North America, from southwest British Columbia to northern California, usually within 300 kilometres of the Pacific Ocean coast, found along the Columbia Gorge and Coastal Forest.