yellow `three-lobed tridax daisy` flower - tridax trilobata

arboretum asteraceae asterales bloom blossom botanical botanist botany camomile carphostephium chamomile compositae daisy dreibiss europe european flora florist flowers galinsoga gallen garden horticulture june leaf lobe lobed mandonia mantecosa mexican mexico millerieae natural nature petals plants procumbens ptilostephium saint sogalgina summer swiss switzerland three threelobed tridax trifida trilobata yecorana yellow