Plants unisexual. Male plants with yellow capitate inflorescences and female plants with more reddish umbellate inflorescences, especially after fertilization.
Only one seen in bloom
Grass resembling millet 2-3 ft high growing in recently wet soil in shady canyon.
Bell 13,748 (RSA).
Thousands of individuals seen in Fairview Fire burn area. The last two photos are from a different individual, same population.