Fagaceae
Tanoak
Notholithocarpus densiflorus
- Family
- Fagaceae
- Genus
- Notholithocarpus
Pet and kid safety: not checked yet. Check pet-safe plants
Is yours looking unwell? Scan your plant — free
Common names
By language (5)
- English
- Tanoak, Tan-oak, Tanbark-oak
- Japanese
- タンオーク
- Persian
- بلوط مازوپوست
- Russian
- Литокарпус густоцветковый
- Slovenian
- Pritlikavi hrast
Synonyms
- Lithocarpus densiflorus (Hook. & Arn.) Rehder
- Pasania densiflora (Hook. & Arn.) Oerst.
- Quercus densiflora Hook. & Arn.
- Quercus echinata Kotschy ex A.DC.
- Synaedrys densiflora (Hook. & Arn.) Koidz.
Flowers
- In flower
- June to August (from 140 flowering iNaturalist observations worldwide)
- Flower colour
- yellow (USDA PLANTS Database)
Characteristics
- Growth habit
- Shrub, Tree
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos
FlowerPhoto: George Williams, CC BY 4.0, from iNaturalist 
FlowerPhoto: stinger, CC BY 4.0, from iNaturalist 
FlowerPhoto: Karen (with occasional help from Mike), CC BY 4.0, from iNaturalist 
FlowerPhoto: George Williams, CC BY 4.0, from iNaturalist 
LeavesPhoto: Adam J. Searcy, CC BY 4.0, from iNaturalist 
Photo: Joseph O'Brien, USDA Forest Service, CC BY 3.0, from Wikimedia Commons 
Photo: Adam J. Searcy, CC BY 4.0, from iNaturalist 
Photo: Joseph O'Brien, USDA Forest Service, CC BY 3.0, from Wikimedia Commons 
Photo: Adam J. Searcy, CC BY 4.0, from iNaturalist 
Photo: MPF, CC BY-SA 3.0, from Wikimedia Commons 
Photo: Garth Harwood, CC BY 4.0, from iNaturalist 
Photo: Joseph O'Brien, USDA Forest Service, CC BY 3.0, from Wikimedia Commons
Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.