Participant Info

Species

Sinapis alba [Brassica hirta] [ Brassica alba] [Rorippa coloradensis]

Family

Brassicaceae

CommonName

white mustard

Presence

yes

Status

exotic

EarliestDate

1875

LatestDate

1982

Ecosystem

basin, ruderal

Geobotanical

UBasin, LBasin

Counties

Alamosa, Conejos

Passes

WildlifePreserves

Other Localities

PhotoRecords

Comments

NEED IN SITU PHOTOS. This mustard used to be cultivated for its seed, used in, well, mustard. In 1875 Brandegee collected a specimen from “Lakes of San Luis Valley,” which R. L. Stuckey designated as the holotype for "Rorippa coloradensis" (see Stuckey 1972, Sida 4, pp. 303-305), and which in 2007 Al-Shehbaz determined to be Sinapis alba. The only other Watershed record of S. alba is of escaped plants growing along a ditch in Conejos Co (1982). These two locations are the only ones for the entire Rio Grande drainage. Judging from the USA distribution map in BONAP, the plant does not often escape and persist.

Annotation