Sedum brevifolium DC.
Annotated by Ben Legler, Jun 2016.

Washington: King County: Southern face of a small unnamed ridgeline on north side of Interstate 90 ca 15 air km southeast of North Bend and 4 air km west of Mt. Defiance, on a rocky bald adjacent to rock climbing routes. Elev. 572 m.
47.430525° N, 121.621412° W
Datum: WGS 84. Uncertainty: 6 meters. Coordinate Source: GPS.
Dry, south facing, sloping rock face with smooth expanses of bare rock, rock crevices, and small patches of fine scree, with scattered Arctostaphylos uva-ursi, Phlox diffusa, Penstemon davidsonii; full sun, exposed. Petals 4.2-5 mm, broadly acute, white, with prominent red midvein adaxially, spreading; sepals 1.4-1.8 mm, acute; young follicles erect; leaves opposite, subglobose, gray-green and densely packed on sterile shoots, reddish and loosely spaced on flowering shoots, pruinose, easily detached; plants forming small clumps 3-7 cm tall, in rock crevices and fine gravel or sand over rock, readily spreading by detached leaves, very common across exposed rock surfaces and fully naturalized here. Photographed. Phenology: Flowers.

Ben Legler 14110, Jun 5, 2016
WTU, Accession: 418684, Barcode: WTU-V-040363