Jamesbrittenia tortuosa flower

The two-lipped corolla of a Jamesbrittenia tortuosa flower comprises three lower and two upper petal lobes, spreading from the small mouth at the end of a long tube. It is white here but may also be mauve or pink. The petal tips are squarish to roundly notched, the blades oblong, sometimes obovate.

The orange-yellow colouring inside the throat has dark vein lines from down inside the tube. Those up into the centre of each lobe continue more distinctly and blue-purplish onto the lobe base than the lateral ones. These lines may also be red-purple on the flowers of some plants, or the colouring and the lines in the throat brown.

The corolla diameter is up to 15 mm (Vlok and Schutte-Vlok, 2015; Bond and Goldblatt, 1984; iNaturalist).