Convolvulus recurvatus subsp. nullarborensis R.W.Johnson, Austrobaileya 6: 33. 2001. (Johnson 2001: 33).

Wood, John R. I., Williams, Bethany R. M., Mitchell, Thomas C., Carine, Mark A., Harris, David J. & Scotland, Robert W., 2015, A foundation monograph of Convolvulus L. (Convolvulaceae), PhytoKeys 51, pp. 1-282 : 100

63b. Convolvulus recurvatus subsp. nullarborensis R.W.Johnson, Austrobaileya 6: 33. 2001. (Johnson 2001: 33).

Type.

AUSTRALIA, South Australia, Wilson 1692 (holotype AD; isotypes BRI, MEL).

Distinguishing features.

A relatively distinctive subspecies because of the small corolla 5-7 mm in length and the very small calyx, the sepals 3-4 mm long. The leaves on the flowering stems are usually sparsely hairy and the central lobe is narrowly oblong with a distinctive emarginate apex.

Distribution.

Australia: South Australia and adjacent parts of Western Australia centred on the Nullabar plains (Ising 6/9/1920, Ising 1528, Donner 7216, Crisp 181, Weber 7921).

Notes.

Convolvulus recurvatus is very similar to Convolvulus clementii differing only in the recurved fruiting peduncles and the more strongly tuberculate seeds. Flowering specimens cannot be safely distinguished.