Hypochaeris glabra

Hypochaeris glabra_smooth catsear_JM DiTomaso
Photo courtesy Joseph DiTomaso

Common names: smooth cat's-ear

Hypochaeris glabra (smooth catsear) is an annual flowering herb (family Asteraceae) found throughout California, except in the Great Basin and desert. Smooth catsear prefers disturbed places, such as roadsides, orchards and landscaped areas, as well as grasslands, woodland and scrub. It is commonly found in overgrazed rangeland. The yellow flowers of smooth catsear look similar to dandelion flowers, and produce seeds that are dispersed by the wind, soil movement, and by clinging to animals and humans. Cultivation can be used to control smooth catsear, but grazing, mowing or burning can encourage growth and seed germination. Although smooth catsear is widespread, its impacts appear to be relatively minor.

Cal-IPC Rating: Limited

Cal-IPC Assessment

Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.

Cal-IPC Symposium Presentations

  • Bauder, E. T. (1996). Exotics in the southern California bernal pool ecosystem. California Exotic Pest Plant Council Symposium '96. San Diego, CA.
  • McGraw, J. (2002). Management of rare native species amidst exotic plant competition: Insights from Santa Cruz County’s endemic sandhills community. California Exotic Pest Plant Council Symposium 2002. Sacramento, CA.
  • Quinn, L., B. Davis, et al. (2006). Does horse manure harbor invasive plants? Cal-IPC Symposium. Rohnert Park, CA.

Other Hypochaeris glabra Information

  • CalPhotos - Images of plants taken mostly in California.
  • CalFlora - Distribution information based on submitted observations and herbarium specimens.
  • CalWeedMapper - Distribution information with ability to determine regional priorities.
  • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
  • USDA PLANTS Database - Federal database with information on identification and distribution, and links to websites in individual states.