Cotoneaster horizontalis Decne.
Annotated by Peter F. Zika. Remarks: [= coll. 23698].

Washington: King County: W-bound I-90 near truck scales, near height of land 0.2 air km NW of Echo Lake. Elev. 270 m.
47° 30.7' N, 121° 52.2' W
Sunny slope just above mowed margin of freeway, with Rubus armeniacus, R. ursinus, Cytisus scoparius, Alnus rubra. Sprawling shrub 1.5 m tall, branches stiff and herringbone-planar, deciduous shiny leaves; 1-2(3) flr/iinfl; flowers 6.5-6.8 mm long, petals erect, incurved, red to dark red, apex pink, base dark red, some purplish-black at base in bud; anthers white, filaments dark red, rarely purplish dark red at base; 10(11) stamens; 3(4) styles); copious nectar; bird-sown adventive (no cultivated plants in area). Phenology: Flowers.

Peter F. Zika 23831, May 25, 2008
CIC, Accession: 40474