Conoclinium mayfieldii is a Mexican species of flowering plants in the family Asteraceae. It has a discontinuous distribution, found in the Sierra Madre Occidental in Chihuahua and Durango, and also in the Sierra Madre Oriental in Tamaulipas. These two mountain ranges are separated by the Chihuahuan Desert, 400 km wide.Patterson, T. F. 1996. Phytologia 80: 104-107 diagnosis in Latin, description and commentary in English, line drawings on page 105World Atlas, MexicoTurner, B. L. 1997. The Comps of Mexico: A systematic account of the family Asteraceae, vol. 1 -- Eupatorieae. Phytologia Memoirs 11: i–iv, 1–272.
Conoclinium mayfieldii is a reclining herb up to 70 cm (28 inches) tall. Leaves are opposite, egg-shaped. The plant usually produces several flower heads, each with blue or lavender disc florets but no ray florets.
The species is named for American botanist Mark H. Mayfield.
References
External links photo of herbarium specimen at herbarium of the Universidad Autónoma Nacional de México, collected in Tamaulipas