Conoclinium species [Asteraceae]

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Scientific Name Conoclinium coelestinum (Eupatorium coelestinum) USDA PLANTS Symbol COCO13
Common Name Blue Mistflower ITIS Taxonomic Serial No. 511282
Family Asteraceae (Sunflower) SEINet
Reference
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Description Habitat: Sandy, moist soils along stream banks, shores, ditches, pine-oak woodlands,roadised and disturbed sites, 150 to 1300 ft.
Plant: Perennial, bushy plant, stems usually erect, sometimes decumbent or procumbent (rooting at nodes), up to 6 ft long but often less.
Leaves: Opposite, deltoid, 3/4 to 2-3/4 inches long, margins serrate to serrate-dentate or crenate with pointed tips; minutely hairy and gland-dotted.
Inflorescence: Short-stemmed clusters of flowers forming an almost flat top; disk flowers bright blue or violet, about 1/4-inch long, no ray flowers.
Bloom Period: July to October.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, www.wildflower.org, and SEINet.
BONAP Distribution Map

Texas Status:
Native
Scientific Name Conoclinium dissectum (Conoclinium greggii, Eupatorium greggii) USDA PLANTS Symbol COGR10
Common Name Palmleaf Thoroughwort, Mistflower ITIS Taxonomic Serial No. 780261
Family Asteraceae (Sunflower) SEINet
Reference
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Description Habitat: Sandy, dry soils; woodland openings and edges; 1300 to 5000 ft.
Plant: Erect to sprawling perennial with weak stems up to 3 feet long.
Leaves: Green leaves with tapering bases and minutely hairy and gland-dotted; opposite, petiolate, nearly sessile, ovate, to somewhat triangular overall, and deeply palmately dissected into 3 lobes which are further pinnately dissected, with either pointed or rounded tips.
Inflorescence: Flower heads clustered at the stem tips and have light blue to purple disk flowers with similarly colored, long, threadlike stigmas; no ray flowers.
Bloom Period: April to November.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, www.fireflyforest.com and SEINet.
Note: Some of the photos below were taken at Lady Bird Johnson Wildflower Center in Austin, but the plant is not native in Central Texas, being found mainly in the far west portions of the state, including Big Bend, and in southern Arizona.
BONAP Distribution Map

Texas Status:
Native

© Tom Lebsack 2019