Participant Info

Species

Descurainia pinnata [Descurainia ramosissima] [Erysimum pinnatum]

Family

Brassicaceae

CommonName

Villa Grove tansymustard

Presence

YES

Status

native

EarliestDate

1898

LatestDate

2021

Ecosystem

basin, shrubland, foothill, montane, subalpine

Geobotanical

SSawatch, Garitas, SSanjuans, Culebras, NCristos, UBasin, LBasin

Counties

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

Passes

WildlifePreserves

Baca, Coller, Great Sand Dunes, Mountain Home Reservoir, San Luis Lakes

Other Localities

PhotoRecords

YES Rich Haswell: Saguache Co, natural pond above Luders Creek cpgd 25 Aug 2021

Comments

Descurainia pinnata is ubiquitous in the Watershed, from basin to upper montane. There remains the sorting of these herbarium vouchers in terms of the more recent revisions of the D. pinnata complex. Of tansymustards in the USA, this species is the most widespread, with occurrences in every state. It follows the Rio Grande drainage steadily right down to the Gulf of Mexico. It is the bad boy of Descurainias, showing extreme variation in nearly every character. Note that Descurainia ramosissima is sometimes disaggregated from D. pinnata and given species status; Hogan and Elliot do so, and found some occurrences of D. ramosissima in the pinyon-juniper zone of the North Cristos.

Annotation