California Brittlebush

Encelia californica

Other common names: bush sunflower, coast sunflower

Habitat:

• Chaparral

• Coastal sage scrub

Identification:

• Round, perennial shrub

  • Smaller than 5 feet

• Bright yellow, daisy-like flower heads with dark brown-orange centers sitting on top of stalks

  • ~2 inches

  • Flowering season from February to June, but a few flowers can remain throughout the year

• Green, oval leaves are covered in short, light-colored hairs.

  • 1.25-2.5 inches long

  • The leaves may shrivel, turn brown, and drop during the dry summer and extreme drought to conserve water.

• Aromatic

Fun Fact!

Often used for habitat restoration to hold soil together on bluffs, thus helping to mitigate erosion.

The California brittlebush is a shrub commonly found in coastal chaparral regions. The leaves of the plant are covered in short, light-colored hairs that reflect sunlight, preventing its water from evaporating. To conserve water, reduce heat absorption, and/or passively cool, certain designs may incorporate a similar, bioinspired structure of the hairs. 

The California brittlebush’s deep, extensive fibrous root system reaches deep into the soil to access groundwater reserves, accommodating the scarce rainwater. The particular pattern of fibrous root systems is described as “dendritic,” a branching, tree-like network that is also prevalent in rivers and blood vessels. The dendritic pattern provides the most efficient path for materials to flow with the least resistance. In order to develop resource-efficient technology, various networks that provide a flow — such as electricity running in circuit boards — may follow this dendritic system.

References:

Bush Sunflower. (2019). Nature Collective. https://naturecollective.org/plant-guide/details/bush-sunflower/

Miguel, A. F. (2014). Dendritic design as an archetype for growth patterns in nature: fractal and constructal views. Frontiers in Physics, 2. https://doi.org/10.3389/fphy.2014.00009