El polen parece polvo amarillo.
"Libro segundo de lectura"
Ellen M. Cyr
Carleton observed that the same varieties of wheat grown at Nephi, Utah, contained 16.61 per cent protein; at amarillo, Texas, 15.25 per cent; and at McPherson, Kansas, a humid station, 13.04 per cent.
"Dry-Farming"
John A. Widtsoe
A writer, alluding to the manufacture of cigars, says:- The colors or strengths are amarillo Claro, bright yellow; amarillo Obscuro, dark yellow; Claro, bright; Colorado Claro, bright red; Colorado, red; Colorado Obscuro, dark red; Colorado Maduro, red-ripe or mellow; Maduro, ripe or mellow; Maduro Obscuro, dark ripe or mellow; Pajizo Claro, bright straw-colored; Pajizo, straw-colored; Pajizo Obscuro, dark straw-colored; Fuerte, strong or heavy; Entre Fuerte, rather strong or heavy; Flajo, light.
"Tobacco; Its History, Varieties, Culture, Manufacture and Commerce"
E. R. Billings