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  • Dune vegetation: European beachgrass series, Sand - verbena - beach bursage series.

    Coastal Hills - Santa Rosa Plain

  • Dune vegetation: Sand-verbena - beach bursage series.

    Southern Channel Islands (Bailey)

  • Dunes and adjacent uplands with a cover of eolian sand support a succession of plant communities, from bare dune through Sand-verbena - beach bursage series.

    Southern Channel Islands (Bailey)

  • Dune vegetation: Dune lupine - goldenbrush series, Sand-verbena - beach bursage series, Yellow bush lupine series.

    Santa Maria Valley (Bailey)

  • During the dry season the stems of brittlebush and bursage are so dehydrated that they can be used as kindling wood, yet they are alive.

    Adaptations of desert plants

  • Brittlebush and white bursage leaves show no green through their trichomes during the dry season, while desert agave (Agave deserti) is light gray due to its thick, waxy cuticle.

    Adaptations of desert plants

  • The valleys are dominated by low shrubs, primarily creosote bush (Larrea tridentata) and white bursage (Ambrosia dumosa).

    Subdivisions of the Sonoran Desert

  • Dunelands: Sand-verbena - beach bursage series, Dune lupine - goldenbush series.

    Santa Ynez - Sulphur Mountains (Bailey)

  • Lower elevation areas are dominated by dense communities of creosote and white bursage, but on slopes and higher portions of bajadas, subtrees such as palo verde (Cercidium floridum, C. microphyllum) and ironwood (Olneya tesota), saguaros (Carnegiea gigantia), and other tall cacti are abundant.

    Sonoran desert

  • Creosote (Larrea divaricata) and white bursage (Ambrosia dermosa) vegetation characterize the lower Colorado River Valley section.

    Sonoran desert


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