Participant Info

Species

Lepidium latifolium [Cardaria latifolia]

Family

Brassicaceae

CommonName

tall whitetop, iron weed, broad-leaved whitetop

Presence

YES

Status

exotic, noxious

EarliestDate

1952

LatestDate

2021

Ecosystem

basin, ruderal, urban

Geobotanical

UBasin, LBasin

Counties

Alamosa, Conejos, Rio Grande, Saguache

Passes

WildlifePreserves

Baca, Blanca Wetlands, Monte Vista, San Luis Lakes

Other Localities

Alamosa (town), Del Norte

PhotoRecords

YES Rich Haswell: Conejos Co, under Hwy 240 bridge over the Rio Grande 28 July 2021

Comments

Tall whitetop is a Basin exotic, collected along fence lines, road sides, irrigation ditches, alkaline playas, and vacant lots. In the Watershed it is more common than short whitetop (Lepidium draba). It is on Colorado's B list of "noxious weeds." In the USA, its central range is west of the Great Plains. In New Mexico, it follows the Rio Grande drainage to the Mexican border, but observations include only El Paso Co, Texas for the rest of the drainage.

Annotation