Conoclinium coelestinum (Mist-flower)

Conoclinium coelestinum (L.) DC.

Mist-flower, blue mistflower, blue boneset

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Asteridae	A large class that encompasses asters
Order	Asterales	Flowering plants with a central disk flower and surrounding petals, like daisies
Family	Asteraceae	The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers
Genus	Conoclinium	From Greek κῶνος (konos), “cone;” and κλινίον (klinion), “little bed”
Species	coelestinum	“Sky blue,” for the flower color

About plant names...

Blue mistflower is native to North America.

Identification: Plants are 18-36" (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:

Conoclinium coelestinum at Illinois Wildflowers

Conoclinium coelestinum on www.jeffpippen.com

Conoclinium coelestinum on Wildflowers of the United States

Conoclinium coelestinum on floridata.com

Conoclinium coelestinum at the Missouri Botanical Garden

Conoclinium coelestinum at the Lady Bird Johnson Wildflower Center

9/21/2012 · By Jacquelyn Boyt

4/14/2015 · Everglades National Park, Florida
≈ 3 × 2½" (7.6 × 6.6 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 25 May 2020.

4/13/2015 · Ernest F. Coe Visitor Center, Everglades National Park, Florida
≈ 4 × 4½" (10 × 11 cm)

9/1/2013 · Colonial Williamsburg, Williamsburg, Virginia
≈ 33 × 49" (83 × 125 cm)

9/1/2013 · Colonial Williamsburg, Williamsburg, Virginia
≈ 33 × 34" (83 × 86 cm)

4/13/2015 · Ernest F. Coe Visitor Center, Everglades National Park, Florida
≈ 6 × 4" (16 × 10 cm)

9/1/2013 · Colonial Williamsburg, Williamsburg, Virginia
≈ 12 × 14" (29 × 34 cm)

Range: Zones 4-11:

About this map...