Participant Info

Species

Oenothera flava [Lavauxia flava] [Oenothera taraxacoides]

Family

Onagraceae

CommonName

yellow evening primrose, longtubed evening primrose

Presence

YES

Status

native

EarliestDate

1900

LatestDate

2020

Ecosystem

montane

Geobotanical

SSawatch, Garitas, SSanjuans

Counties

Alamosa, Conejos, Costilla, Hinsdale, Rio Grande, Saguache

Passes

La Veta

WildlifePreserves

Other Localities

PhotoRecords

YES Rich Haswell: Rio Grande Co, Beaver Creek Reservoir 7 July 2020

Comments

Campared to another yellow Watershed evening primrose, Oenothera elata, O. flava prefers a habitat that is drier, steeper, and higher in elevation). O. flava and seems especially to enjoy rocky slopes above streams. It also can be found in disturbed ground: beside trails and pond and reservoirs. There is only one record from the east side of the Valley (La Veta Pass)—but a number from the New Mexico Cristos. This is mainly a Great Basin, desert Southwest, and Rocky Mountain plant. It follows the Rio Grande drainage in New Mexico to the border with Mexico, but no farther down stream.

Annotation