Crataegus castlegarensis J.B. Phipps & O’Kennon
Annotated by P. F. Zika.

Washington: Thurston County: East side of Scatter Creek Rest Area on Interstate 5. Elev. 197 ft.
T16N R2W S31
Datum: NAD 27. Uncertainty: 805 meters. Coordinate Source: TRS2LL.
Several clones near fencerow, full sun, with Vicia sativa, Poa pratensis, Pteridium, Crataegus douglasii, Crataegus monogyna, Amelanchier alnifolia, Rhamnus purshianus, dry disturbed meadow. 1.5-3 meters tall shrubs, twigs brown; 10 stamens; spines 15-28 mm long; some spines paired; 3-5 styles; immature fruit ovoid to broadly elliptic-subglobose, green with red highlights.¶Reference specimen for illustration in Revision of Flora of the Pacific Northwest, WTU Herbarium, 2015. Phenology: Flowers & Fruits.

P. F. Zika 18488, Jun 16, 2003
WTU, Accession: 353555, Barcode: WTU-V-024358