[Willowherbs and Spike-primroses: The Genus Epilobium in the Cascade Mountains of Oregon and Washington]
Autumn Willowherb, Tall Annual Willowherb
Epilobium brachycarpum
Synonyms: Epilobium jucundum, Epilobium paniculatum, Epilobium paniculatum var. hammondii, Epilobium paniculatum var. jucundum, Epilobium paniculatum var. laevicaule, Epilobium paniculatum var. paniculatum, Epilobium paniculatum var. subulatum, Epilobium paniculatum var. tracyi

- 
Tall annual willowherbs observed along the Dead Indian Highway at the junction with Hyatt Prairie Road, Jackson County, OR......July 23, 2021.

The photo above shows a close-up of the flower of tall annual
willow-herb as seen along Rd #23 at the mountain viewpoint at the southwestern
corner of Mt. Adams.........July 23, 2005. Note that each petal
is deeply cleft down the middle.
- 
The photo above shows tall annual willow-herb as seen along Rd
#23 at the Mt. Adams viewpoint at the southwestern corner of Mt. Adams.......June
22, 2005. Notice how glabrous the stems and pods are.
- 
The 2 photos above show close-ups of the stem leaves of tall annual willow-herb as seen in grasslands in the Conboy Lake National Wildlife Refuge along Lakeside Road about one-half mile west of Fisher Hill Road.........August 10, 2007.
Paul Slichter