Opuntia engelmannii Salm-Dyck ?
Annotated by Ben Legler, 26 Oct 2004.

Washington: Island County: Whidbey Island, The Nature Conservancy's Ebey's Landing Preserve; along top of bluff above Perego's Lagoon. Elev. 200 ft.
48° 12' 7.6" N, 122° 43' 54.1" W
Open, grassy, SW-facing bluff backed by Pseudotsuga forest. One large plant 1 meter tall by 2 meters broad on slope of bluff, 2 smaller plants nearby (animal-disseminated?); pads 3 cm thick by 20-30 cm long; strongly flattened; stems jointed; last year’s fruits to 3 cm long. Phenology: Fruits.

Ben Legler 1707, Jun 4, 2004
WTU, Accession: 357726