Kings canyon
Along a dirt street at the edge of a village during extended very severe drought and dry season; definitely drought tolerant
forest edge beside Chichén Itzá Ruins; limestone bedrock, elevation ~39m (~128ft)
lower slope of El Cerrito 5kms south of Tequisquiapan; bedrock volcanic andesite, an intermediate rock between basalt and rhyolite; elevation about 2,000m
beside Maya hut near Chichén Itzá Ruins; limestone bedrock, elevation ~39m (~128ft)
weedy edge of forest ±4kms west of Ek Balam Ruins; elevation ~40m (~130 ft)
In Yoloy Bypass Wildlife Area. Common along roadside in some sections. With Helianthus annuus.