[Rockcresses: The Genera Arabis, Boechera and Turritis in the Cascade Mts. of Oregon and Washington]

Howell's Flatseed Rockcress

Boechera howellii

Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii

Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii)

Howell's flatseed rockcress forming its erect fruits as seen about 100 meters west of the summit of Lookout Mountain, Badger Creek Wilderness......July 31, 2021. If this isn't Howell's flatseed rockcress, then it is the very similar Coville's rockcress (Boechera covillei)

Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii)

Howell's flatseed rockcress forming its mature fruits as seen about 100 meters west of the summit of Lookout Mountain, Badger Creek Wilderness......August 27, 2022.

Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii)

Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii)

Howell's flatseed rockcress observed atop Scott Mountain, Mount Washington Wilderness.......July 18, 2023.

Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii) - Mature fruits of Howell's Flatseed Rockcress: Boechera howellii (Synonyms: Arabis howellii, Arabis platysperma, Arabis platysperma var. howellii)

Lower stem leaves of Howell's flatseed rockcress observed at left near the summit of Lookout Mountain, Badger Creek Wilderness.....July 3, 2024. This is what the plant would look like a week or so after the snow has melted off of it. The image at right shows the maturing fruits of Howell's flatseed rockcress observed near the summit of Lookout Mountain, Badger Creek Wilderness....August 18, 2024.
Paul Slichter