Participant Info

Species

Cyclachaena xanthiifolia [Cyclachaena xanthifolia] [Iva xanthiifolia]

Family

Asteraceae

CommonName

marsh elder, giant sumpweed, careless-weed

Presence

yes

Status

native

EarliestDate

2020

LatestDate

2022

Ecosystem

foothill, montane

Geobotanical

SSanjuans

Counties

Conejos

Passes

WildlifePreserves

Other Localities

PhotoRecords

YES Mary E. McDonald: Conejos Co, 2 miles S of Los Mogotes cpgd 16 Aug 2020; Rich Haswell: Conejos Co, by Hwy 17 just E of Fox Creek community 2 Aug 2022

Comments

Giant sumpweed is recorded from just outside the Valley in all directions and recorded from the Rio Grande drainage down through two-thirds of New Mexico. Yet to date there are no herbarium vouchers of Cyclachaena xanthiifolia from the Watershed. Ackerfield (2015, 2022) and BONAP (2022), however, show Costilla Co, with no vouchers in SEINet. And two recent photorecords (2020, 2022) are from the Conejos River near Fox Creek, where currently the species appears to be established. So these photorecords would add Conejos to counties indicated in Ackerfield (2022) and BONAP (2022). The plant is wide spread throughout all of the USA except for the deep South, seemingly adventive east of the Plains.

Annotation