Voucher

Voucher #17890

Oenothera biennis L.

Identification (Voucher 78972)

Family
Onagraceae
Genus
Oenothera
Specific epithet
biennis
Specific author
L.
Determination by
M.T.Johnson, from the iNat obs.
Date determined
Identification comments
"This doesn't look like O. villosa to me. O. villosa tends to have dense simple trichomes, green persistent floral bracts, including on the most terminal/apical flowers, and fairly think sepal tips. This plant has a high density of simple trichome and glandular trichomes, fairly thick free sepal tips and noticeably small floral bracts. The flora bract trait is relevant because it is a feature of the B genome inherited from O. grandiflora in O. biennis, which is an AB genome, where the A genome comes from (O. elata sensu lato or similar AA relative) and the B genome come sfrom O. grandiflora."
Group
Rothfels
User
crothfels
Date created
Jun 26, 2025
Date updated
Jun 26, 2025

C.J.Rothfels 6118 ()

Voucher (Voucher )

Primary collector
C.J.Rothfels
Collection number
6118
Other collectors
C.Rushworth, C.P.Rothfels
Duplicate locations
Unicate, to UTC.
Date collected
Country of origin
U.S.A.
Primary Subdivision
Utah
Secondary subdivision
Cache County
Specific locality
Logan Canyon. FR125 by the Logan River crossing, between Bridger Campground and Third Dam.
Longitude (DD)
-111.72795
Latitude (DD)
41.750387
Elevation (m)
1518
Habitat
Weedy edge of gravel drive, near river bank (subject to flooding/scouring in spring?). With Verbascum thlapsi, etc.
Description
Two plants seen.
Collection notes
The iNaturalist observation was made earlier in the season than the collection.
Voucher image
Photos posted on iNaturalist: https://www.inaturalist.org/observations/179405346.
Group
Rothfels
User
crothfels
Date created
Jun 26, 2025
Date updated
Jun 26, 2025

Silica-dried Material (Rothfels)

Material (Voucher 78972)

Material Type
Silica-dried
Material Comments
Sample silica-dried, from the population.
Group
Rothfels
User
crothfels
Date created
Jun 26, 2025
Date updated
Jun 26, 2025