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Marcus, Joseph A.
Conoclinium greggii (Gray) Small
Gregg's mistflower, Palmleaf thoroughwort, Palm-leaf mistflower, Palm-leaf thoroughwort, Purple palmleaf mistflower, Purple palmleaf eupatorium
Synonyms: Eupatorium greggii
USDA Symbol: COGR10
USDA Native Status: Native to U.S.
Palm-leaf mistflower is a perennial up to 2 ft. tall with palmate leaves deeply divided into three lobes which are again pinnately dissected. Small, purplish-blue flowers cluster together to form puffy, 2 in., cushion-like flower heads.
The species name “greggii” was named for Josiah Gregg, (1806-1850). He was born in Overton County, Tennessee. In the summer of 1841 and again in the winter of 1841-42 he traveled through Texas, up the Red River valley, and later from Galveston to Austin and by way of Nacogdoches to Arkansas. He took note of Texas geology, trees, prevalent attitudes, and politics. At the same time, Gregg began compiling his travel notes into a readable manuscript. His “Commerce of the Prairies”, which came out in two volumes in 1844, was an immediate success. In 1848 he joined a botanical expedition to western Mexico and California, during which he corresponded with and sent specimens to the eminent botanist George Engelman in St. Louis. Subsequently, the American Botanical Society added the Latin name “greggii” in his honor to twenty-three species of plants. Gregg died on February 25, 1850, as a result of a fall from his horse.
Plant CharacteristicsDuration: Perennial Habit: Herb Size Notes:
1.5-2 feet. Flower:
Fruit: Size Class:
Bloom InformationBloom Color: Blue , Purple
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
AZ , NM , TX Native Distribution:
W. TX to s.e. AZ & adjacent Mex. Native Habitat:
Frequent along stream beds and overflow areas in the Trans-Pecos, east to Edwards Plateau and Rio Grande Plains. Sand, loam, clay or limestone. Seasonally flooded stream beds; plains; overflow areas USDA Native Status: L48(N)
Growing ConditionsWater Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Soil Description: Gravelly, calcareous soils.
Conditions Comments: Greggs Mistflower can be a good ground cover and spreads easily by roots. Often attracts very impressive numbers of Queen butterflies in the Fall.
BenefitUse Wildlife: This plant provides deer browse. Butterflies love the interesting divided flowers.
Conspicuous Flowers: yes
Larval Host: Rawsons Metalmark
Nectar Source: yes
PropagationPropagation Material: Seeds
Description: Not Available
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
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Record Modified: 2012-06-25
Research By: TWC Staff, GDB