Boreal Yarrow

• Aspen Parkland central AB / SK: 87 occurrence records, high confidence
• Northern Continental Divide south AB: 84 occurrence records, high confidence
• Eastern Continental Ranges central AB: 56 occurrence records, high confidence
• Fescue Grassland south AB: 48 occurrence records, high confidence
• Western Alberta Upland central AB: 46 occurrence records, high confidence
• Mixed Grassland south AB / SK: 27 occurrence records, high confidence
• Moist Mixed Grassland south AB / SK: 24 occurrence records, high confidence
• Cypress Upland south AB / SK: 19 occurrence records, medium confidence
• Boreal Transition central AB / SK: 11 occurrence records, medium confidence
• Peace Lowland north AB: 10 occurrence records, medium confidence
• Mid-Boreal Uplands central AB / SK: 7 occurrence records, low confidence
• Western Continental Ranges central AB: 7 occurrence records, low confidence
• Slave River Lowland north AB: 4 occurrence records, low confidence
• Wabasca Lowland north AB: 4 occurrence records, low confidence

A range seen three times is not the same claim as one seen three hundred, so the count travels with the region. Boundaries digitised from the National Ecological Framework for Canada v2.2 (Ecological Stratification Working Group 1995), simplified to about 900 m for display: an outline is accurate to roughly a kilometre, not to the metre.