Filipendula occidentalis (S. Watson) Howell
Annotated by Ivan Palmblad, 21 Dec 1959.

Oregon: Tillamook County: [locality and coordinates withheld; status in Oregon: S2 (Imperiled; OBIC)],
#862 is not Howell's original collection number, but was added later as an ID number when cataloging the Howell-Flinn collection. L.F. Henderson mentioned in protologue as co-collector. Isotype: Spiraea occidentalis S. Watson. Published 1883. Proceedings of the American Academy of Arts and Sciences 18: 192–193.

Thomas J. Howell s.n., Jul 11, 1882
With Louis F. Henderson
HPSU, Accession: 10619