Single Record

Participant Info

Species
Solanum rostratum
Family
Solanaceae
CommonName
buffalobur, Colorado bur, Kansas thistle
Presence
Yes
Status
native
EarliestDate
1983
LatestDate
2024
Ecosystem
basin, foothill, ruderal, urban
Geobotanical
SSanjuans, UBasin, LBasin
Counties
Alamosa, Conejos, Rio Grande, Saguache
Passes
WildlifePreserves
Other Localities
Del Norte
Comments
There are only three herbarium vouchers for Solanum rostratum from the Watershed (1982-1994): Mineral Hot Springs (Saguache Co); south of Alamosa (Alamosa Co), and east of Antonito (Conejos Co). Yet recently photorecords add to the picture. In Del Norte plants have persisted by town streets for five years (2019-2024). iNaturalist observations document occurrences in Sept 2018 (Hwy 15 south of Monte Vista, Rio Grande Co), in Aug 2021 (12 miles east of Alamosa, Alamosa Co), and Aug 2023 (Hwy 285 north of Center, Saguache Co). Neither BONAP (2023) or Ackerfield (2022) show the species present in the Watershed. The species is native to the Rocky Mountains and the Great Plains and adventive elsewhere in the USA, that is, every state except for Florida. It follows the Rio Grande drainage through New Mexico and Texas to the Gulf of Mexico. For more photographs and comments on the curious history of S. rostratum and the potato bug, click "yes" in the Annotation field below.