Mexico, Sonora, Cucurpe, Rio Santo Domingo, narrow side canyon, 1.3 mi (rd) S of Rancho La Brisca, 1.5 mi (rd) N of Rancho Agua Fria, SW end of Sierra San Antonio
Shrub, phyllary tips red, disc florets, anthers & styles yellow, fragrant; uncommon. Coll. w/ S. McMahon, G. Ferguson, J. McCormack, K. Hooper. Ex Herb. University of Idaho