Single Record

Participant Info

Species
Rorippa teres [Rorippa obtusa] [Cardamine teres] [Erysimum walteri] [Nasturtium micropetalum] etc.
Family
Brassicaceae
CommonName
southern marsh yellowcress
Presence
maybe
Status
native
EarliestDate
1924
LatestDate
2012
Ecosystem
basin, shrubland, montane
Geobotanical
SSanjuans, UBasin, LBasin
Counties
Conejos, Mineral, Rio Grande, Saguache
Passes
WildlifePreserves
Baca, Great Sand Dunes
Other Localities
Comments
NEED IN SITU PHOTOGRAPHS. The presence of Rorippa teres in the Watershed remains problematical because the circumscription of the species remains contested. Weber and Wittmann include it in their Colorado Flora of the Eastern Slope, but Ackerfield excludes from her Flora of Colorado (2015, 2022). BONAP and FNA show it only in the southern USA states, but Allred et al. (2020) show it present in the lower Rio Grande drainage of New Mexico as well as in northwest counties such as San Juan and Rio Arriba that are contingent with Colorado. SEINet finds around 15 records from the Watershed—for instance from south of Creede, west of Antonito, and the Baca National Wildlife Refuge—but these determinations may have relied on Weber and Wittmann. BONAP shows the species present in the Rio Grande drainage only from the Big Bend country of Texas to the Gulf of Mexico. According to FNA, R. teres is distinguished from R. sinuata by being annual, not perennial, and having fruiting pedicels not recurved and 150-210 ovules per ovary as opposed to 50-80. Both species have vesicular trichomes on their stems.