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Conoclinium coelestinum (L.) DC.

Mist-flower, blue mistflower, blue boneset

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassAsteridaeA large class that encompasses asters
OrderAsteralesFlowering plants with a central disk flower and surrounding petals, like daisies
FamilyAsteraceaeThe aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
GenusConocliniumFrom Greek κῶνος (konos), “cone;” and κλινίον (klinion), “little bed”
Speciescoelestinum“Sky blue,” for the flower color

About plant names...

Blue mistflower is native to North America.

Identification: Plants are 1½-3′ (45-91 cm) in height. Leaves are roughly triangular (deltate), opposite, wrinkly, with blunt teeth (dentate or dentate-crenate), up to 3″ (7.6 cm) × 2″ (5 cm). Flowers appear in clusters that are almost flat-topped, and 1-3″ (2.5-7.6 cm) around. The flowers are brushlike disc flowers—composed of 40-50 threadlike disc florets—that are blue or purple.[1] Flowers are ¼-⅜″ (6.3-9.5 mm) in size, appearing from July to October. Technically these are composite flowers, like other members of the enormous aster family, but this species lacks ray flowers.

Online References:

Illinois Wildflowers

Www.jeffpippen.com

Wildflowers of the United States

Floridata.com

The Missouri Botanical Garden

The Lady Bird Johnson Wildflower Center

Conoclinium coelestinum (mist-flower, blue mistflower, blue boneset)

9/21/2012 · By Jacquelyn Boyt

Conoclinium coelestinum (mist-flower, blue mistflower, blue boneset)

4/14/2015 · Everglades National Park, Florida · ≈ 8 × 6″ (20 × 14 cm)

Conoclinium coelestinum (mist-flower, blue mistflower, blue boneset)

4/13/2015 · Ernest F. Coe Visitor Center, Everglades National Park, Florida · ≈ 8 × 5″ (19 × 13 cm)

1Steve Christman at Floridata says others have described the unique color as clear blue, powder blue, azure blue, bluish-purple, reddish-purple, blue-pinkish, and pink-purplish. He prefers 'sky-blue pink.'

Eupatorium coelestinum L.

 

Conoclinium coelestinum description by Thomas H. Kent, last updated 15 Jul 2023.

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Conoclinium coelestinum (mist-flower, blue mistflower, blue boneset)

9/1/2013 · Colonial Williamsburg, Williamsburg, Virginia · ≈ 2½ × 4′ (83 × 125 cm)

Conoclinium coelestinum (mist-flower, blue mistflower, blue boneset)

9/1/2013 · Colonial Williamsburg, Williamsburg, Virginia · ≈ 2½ × 4′ (83 × 125 cm)

Conoclinium coelestinum (mist-flower, blue mistflower, blue boneset)

4/13/2015 · Ernest F. Coe Visitor Center, Everglades National Park, Florida · ≈ 8 × 5″ (19 × 13 cm)

Conoclinium coelestinum (mist-flower, blue mistflower, blue boneset)

9/1/2013 · Colonial Williamsburg, Williamsburg, Virginia · ≈ 12 × 18″ (29 × 44 cm)

Range: Zones 4-11:

About this map...