Jamesbrittenia aurantiaca calyx

The calyx of a Jamesbrittenia aurantiaca flower appears too wide for the corolla tube, sitting loosely inside it like the foot of a child wearing a parent’s shoe. The green calyces are cup-shaped to funnel-shaped, the sepal lobes blunt-tipped.

Dark longitudinal lines are conspicuous along the outer surfaces of the hairy yellow corolla tubes. The tubes have the typical Jamesbrittenia kinks some distance below the flower mouths, from where the broad corolla lobes spread partly and assume orange colouring (Pooley, 1998; Van Wyk and Malan, 1997; iNaturalist).