Index / Search / Helianthus nuttallii ssp. rydbergii
§1 Plant
Helianthus nuttallii Torr. & A. Gray ssp. rydbergii (Britton) R.W. Long
vernacular Rydberg's sunflower — subspecies · Asteraceae
§2Habit & range
Habit and range
- Growth habit
- Forb/herb
- Duration
- Perennial
- Group
- Dicot
- Family
- Asteraceae Bercht. & J. Presl
- Genus
- Helianthus
Native status, by region
- CAN Canada Native
- L48 Lower 48 States Native
County-level range
· 60 counties across 5 states/territories§3Cultivation
No cultivation specs.
USDA has not characterised this taxon. Roughly four out of five plants in the database lack the detailed cultivation record present here — typically because they have not been the focus of NRCS Plant Materials work. Range and distribution data are unaffected.
§4Counties, by state
Recorded in 60 counties across 5 states/territories.
Minnesota view state ↗ 8 N ▾
Montana view state ↗ 1 N ▾
Nebraska view state ↗ 11 N ▾
North Dakota view state ↗ 31 N ▾
- Barnes 38003
- Bottineau 38009
- Burke 38013
- Burleigh 38015
- Cass 38017
- Cavalier 38019
- Dickey 38021
- Divide 38023
- Eddy 38027
- Emmons 38029
- Foster 38031
- Grand Forks 38035
- Kidder 38043
- LaMoure 38045
- Logan 38047
- McHenry 38049
- McLean 38055
- Mountrail 38061
- Nelson 38063
- Pembina 38067
- Pierce 38069
- Ramsey 38071
- Ransom 38073
- Richland 38077
- Rolette 38079
- Sheridan 38083
- Stutsman 38093
- Towner 38095
- Traill 38097
- Ward 38101
- Williams 38105
§5Sources & provenance
USDA PLANTS
Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.
plants.usda.gov/HENUR ↗GBIF Backbone
Canonical taxonomic identity, synonym resolution, cross-refs. CC0.
gbif.org/species/6293214 ↗Record version
Cached and built locally. Source version on this record:
usda-plants-mt-2026-05-26
fetched 2026-05-26T09:28:40Z