Spiraea ×hitchcockii Hess & Stoynoff
Annotated by Ben Legler, Oct 2016.

Washington: Snohomish County: Mt. Baker-Snoqualmie National Forest: along trail to Glacier Basin about 1.3 km east of Monte Cristo. Elev. 993 m.
47.984313° N, 121.376071° W,
Datum: WGS 84. Uncertainty: 9 meters. Coordinate Source: Digital Map.
Large, brushy, northeast-facing slope over stable, buried talus, in steep-walled subalpine stream valley, with thickets of Spiraea douglasii and Spiraea splendens growing intermixed, and scattered small Tsuga mertensiana. Erect, branched shrubs ca 1.5 meters tall; leaves glabrous; inflorescences pyramidal, 2-5 x 1.5-2.5 cm; uncommon hybrid, growing near both parents (S. douglasii with elongate inflorescences 6-10 x 2-3 cm and larger leaves; S. splendens with flat-topped inflorescences ca 3 cm wide and smaller leaves). Phenology: Fruits.

Ben Legler 14424, Oct 1, 2016
WTU, Accession: 430736, Barcode: WTU-V-089192