Apocynum denticulatum Suksd.

Washington: Klickitat: North of Rockland.
45.635747° N, 121.154985° W,
Datum: WGS84.
On dry dround in a gulch. HerbariumSpecimenDuplicate: Apocynum medium var. lividum | herbariumSpecimenDuplicate: Apocynum denticulatum | herbariumSpecimenDuplicate: Apocynum medium | herbariumSpecimenDuplicate: Apocynum ×floribundum | herbariumSpecimenDuplicate: Apocynum denticulatum Isotype. Werdenda 1(3):31. 1927. Now considered Apocynum x floribundum. Https://intermountainbiota.org/portal/collections/individual/index.php?occid=30839473. Phenology: flowering. Isotype.

Wilhelm N. Suksdorf 4049, 1904-6-8
WS, Catalog: 43308, WS000331