Various editors, Curtis's Botanical Magazine, Volume 58…
“ Corolla monopetalous, generally twice as long as the calyx; tube also short and reflexed; limb divided into six segments, arranged in a double series. Outer segments three, oblongo-ovate, their margins crisped and waved; of the same colour as the calycine segments, the ground bright yellow, marked with rows of irregular spots or interrupted stripes of reddish-brown, extending from the centre obliquely outwards, the smaller calycine sepal only being sometimes variegated with greenish-yellow along the middle and deep red at the margins. ”
