Large-flowered Caltrop may be distinguished from Goldpoppy by (1) sprawling open habit of growth, (2) compound leaves, (3) season of blossoming, and (4) the fact that the plants grow singly rather than in masses.
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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.
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