Boltonia diffusa
smallhead doll's daisy, doll's daisy
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Photo credit: Larry Allain, U.S. Geological Survey
Family
Asteraceae
Leaf Arrangement
alternate
Leaf Margin
entire, serrulate
Leaf Type
simple
Leaf Shape
linear, lanceolate, oblanceolate
Growth Form
forb
Flower Color
purple, white
Flower Petals
many
Flower Month
July - November
Height (meters)
0.3 - 1.5
Milky Sap
No
Armed/Unarmed
Unarmed
Origin
native
Lifespan
perennial
Growing Season
Warm season
Wetland Class
FAC
Wetland Coefficient of Conservatism
5
Prairie Coefficient of Conservatism
6
Field Characters
Boltonia asteroides may be distinguished from B. diffusa by the presence of a wider receptacle (about 10 mm wide) compared to 3-6 mm wide for B. diffusa and pappus awns (about 1mm long) while those of B. diffusa measure less than 1 mm long. Boltonia may be distinguished from similar small asters by its fruit which is winged with two bristles at the apex, and its silvery-green stems with silver ridges running down the stem.
Habitat
Moist or wet to sometimes rather dry places.