Image of Tithonia tubaeformis (Jacq.) Cass.

Description:

Plants at roadside in coarse gravels of reddish volcanic rhyolite on grassy mid-slope hillside. This Mexican species seems to often occupy the same disturbed soil habitats at roadsides fence lines and fallow fields as the more northern 'Common Sunflower', Helianthus annuus, does in the US.