The flannelbush or flannel bush is a genusFremontodendron (or Fremontia) of two species of shrubs from the western United States and northern Mexico. Their leaves have a leathery and fuzzy texture reminiscent of flannel (thus the name), and the yellow and orange flowers are large and showy. The genus was named after John C. Fremont.
The hairs of the leaves and young shoots can cause skin irritation.
There are two species: the California flannelbush F. californicum, and the Mexican flannelbushF. mexicanum, and a number of populations of uncertain status. In addition, a number of hybrid cultivars have been produced, including 'California Glory', 'Ken Taylor', and 'Pacific Sunset'.
Flannelbush is a dominant or indicator species in the following publications: (1) Vegetation types of the San Gabriel Mountains [16] (2) Preliminary descriptions of the terrestrial natural communities of California [19] (3) Vegetation of the San Bernardino Mountains [31].
Flannelbush seed harvest, storage, germination, and planting methods are also discussed in detail [8,24,34].
Flannelbush is also a dominant shrub in desert chaparral communities which burn less frequently and intensely than other chaparral types [15,21].