Fagaceae
Bluejack oak
Quercus incana
- Family
- Fagaceae
- Genus
- Quercus
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Common names
By language (5)
- Arabic
- سنديان شايب
- arz
- سنديان شايب
- Chinese
- 蓝杰克栎
- English
- Bluejack oak
- Tamil
- மாசிக்காய்
Synonyms
- Dryopsila cinerea (Michx.) Raf.
- Dryopsila oligodes Raf.
- Dryopsila verrucosa Raf.
- Quercus brevifolia Sarg.
- Quercus cinerea Michx.
- Quercus cinerea Raf.
- Quercus cinerea f. dentatolobata (A.DC.) Trel.
- Quercus cinerea var. dentatolobata A.DC.
- Quercus cinerea var. humilis (Pursh) A.DC.
- Quercus heterophyla Raf.
- Quercus humilis Walter
- Quercus ilexoides Raf.
- Quercus oligodes Raf.
- Quercus phellos var. brevifolia Lam.
- Quercus phellos var. humilis Pursh
- Quercus phellos var. latifolia Marshall
- Quercus verrucosa Raf.
Flowers
- In flower
- March to April (from 6 flowering iNaturalist observations worldwide)
Characteristics
- Growth habit
- Shrub, Tree
- Lifespan
- Perennial
- In the US and Canada
- Lower 48 states: native
Photos
FlowerPhoto: Austin Pursley, CC0, from iNaturalist 
FlowerPhoto: Valerie Anderson, CC BY 4.0, from iNaturalist 
Photo: Reid Hardin, CC BY 4.0, from iNaturalist 
Photo: Yercaud-elango, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Mark Connolly, CC0, from iNaturalist 
Photo: Yercaud-elango, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Laura Clark, CC BY 4.0, from iNaturalist 
Photo: Yercaud-elango, CC BY-SA 4.0, from Wikimedia Commons 
Photo: Katie Raney, CC BY 4.0, from iNaturalist 
Photo: Grant Foster, CC BY 4.0, from iNaturalist 
Photo: Alan Weakley, CC0, from iNaturalist 
Photo: Jeff Clark, CC BY 4.0, from iNaturalist
More in Quercus
- Pedunculate oakQuercus roburFagaceae
- Cork oakQuercus suberFagaceae
- Sessile oakQuercus petraeaFagaceae
- Holm oakQuercus ilexFagaceae
- European turkey oakQuercus cerrisFagaceae
- Northern red oakQuercus rubraFagaceae
- Downy oakQuercus pubescensFagaceae
- Kermes oakQuercus cocciferaFagaceae
- Pin oakQuercus palustrisFagaceae
- White oakQuercus albaFagaceae
- Hungarian oakQuercus frainettoFagaceae
- Daimyo oakQuercus dentataFagaceae
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.