TRIUMPH Single cup-shaped flowers, wide colour range, often with contrasting markings. Mid- to late spring.

DARWIN HYBRID TULIPS Single ovoid flowers, bright colours, often with contrasting margins and bases. Midto late spring.

Source: Conran, J. (2005). Liliaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.