Prunus emarginata (Douglas) Eaton × Prunus virginiana L.

Washington: Pierce County: Route 410 near Cayuse Pass, 1.5 air km W of Little Tipsoo Lake, Mount Rainier National Park, Cascade Range. Elev. 1445 m.
46.8666° N, 121.5359° W
Dry sand and gravel, subalpine roadside, full sun, over volcanics, with Eucephalus ledophyllus, Artemisia ludoviciana, Achillea millefolium, Eriophyllum lanatum. Shrub 1.5 m tall; white petals 4-5 mm long; flowers solitary or 3-4/ inflorescence; some sepals with sparsely serrate margins; some leaves narrowly elliptic like Prunus emarginata, some leaves obovate like Prunus virginiana.¶Study #: MORA-00312¶Permit #: MORA-2023-SCI-0003¶NPS Accession #: MORA-1332¶NPS Catalog #: 25470 Phenology: Flowers.

Peter F. Zika 31499, Jun 25, 2023
WTU, Accession: 456386, Barcode: WTU-V-105929