The corolla tube is urn shaped and 7 mm long.

The two fertile stamens are attached to the corolla tube.

Both the style and the stamens protrude outside the corolla tube.

The upper part of the corolla tube is almost cylindrical.

This makes it easy to get to nectar of flowers with long corolla tubes.

They are, therefore, inserted at 0.16 to 0.2 of the length of the corolla tube.

The flowers are white and fragrant, with the corolla tube about 10 mm long.

The corolla tubes are shorter and the bracts more spread out.

Bees cannot access the nectar, concealed at the bottom of the corolla tube.

The corolla tube is narrow at the base, gradually widening toward the apex.