YELLOW

[Illustration: Larrea tridentata]

Common names: GREASEWOOD, CREOSOTEBUSH, (_HEDIONDILLA_)

Arizona, California, and Texas deserts: (_Larrea tridentata_). Yellow.

Spring.

Caltrop family. Size: Shrub, 2 to 8 feet high.

No one could justifiably question the statement that Creosotebush is the

most successful, widespread, and readily recognized desert plant of the

hot, arid regions of North America. It often occurs over wide areas in

such pure stands as to constitute true _Larrea_ plains. Its common

companion is the grayish Burrobush or Bur-sage.

Following winter rains, the Creosotebush may put out a few yellow

blossoms in January, but usually bursts into full flower in April or

May, to be followed in a short time with the equally spectacular fuzzy

white seed balls making the bushes appear to be covered with a light

frosting of snow. After a rain, the plants give off a musty, resinous

odor which is the basis of the Mexican name _Hediondilla_ (freely

translated, “Little Stinker”). Lac occurs as a resinous incrustation on

the branches, and was used by the Indians for mending pottery, making

mosaics, and for fixing arrow points.

Leaves of the Creosotebush are covered with a “varnish” which often

glistens in the sunlight, and helps reduce evaporative moisture loss,

thereby enabling the plant to resist the desiccating effect of hot, dry

winds.

Flowers of the Southwest Deserts · 第 37 / 109 题