Vine Maple

Acer circinatum

"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.
Vine maple flowers I can't say I've ever though of maples as a flowering tree, but these are lovely. Acer circinatum,Geotagged,Spring,United States

Appearance

It most commonly grows as a large shrub growing to around 5 to 8 metres tall, but it will occasionally form a small to medium-sized tree, exceptionally to 18 metres tall. The shoots are slender and hairless.

The leaves are opposite, and palmately lobed with 7 to 11 lobes, almost circular in outline, 3 to 14 centimetres long and broad, and thinly hairy on the underside; the lobes are pointed and with coarsely toothed margins. The leaves turn bright yellow to orange-red in fall. The flowers are small, 6 to 9 millimetres in diameter, with a dark red calyx and five short greenish-yellow petals; they are produced in open corymbs of 4 to 20 together in spring. The fruit is a two-seeded samara, each seed 8 to 10 millimetres in diameter, with a lateral wing 2 to 4 centimetres long.

Vine Maple trees can bend over easily. Sometimes, this can cause the top of the tree to grow into the ground and send out a new root system, creating a natural arch.
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,Geotagged,Hall of Mosses,Hoh Rain Forest,Moss,United States,Vine Maple,mosses

Habitat

It typically grows in the understory below much taller forest trees, but can sometimes be found in open ground, and occurs at altitudes from sea level up to 1,500 metres.
Vine Maple Very common native Pacific NW maple tree. Grows easily and is valued for being decorative, especially for it's fall foliage.  Acer circinatum,Geotagged,United States,acer circinatum

Uses

It is occasionally cultivated outside its native range as an ornamental tree, from Juneau, Alaska and Ottawa, Ontario to Huntsville, Alabama, and also in northwestern Europe.

References:

Some text fragments are auto parsed from Wikipedia.

Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderSapindales
FamilySapindaceae
GenusAcer
SpeciesA. circinatum