| 1 | Corolla tube glabrous outside, usually rather wide, without hair-ring inside near the insertion of the stamens. Base of filaments glandular and also the ovary with similar sessile glands. Calyx cupular, c. 2-3 mm. Venation not prominent above. Filaments inserted close to the base of the tube, which is not narrowed |
| 1' | Corolla tube (except at the very base) outside puberulous. Base of filaments without sessile glands. Venation above mostly prominent. |
| 2 | Flowers large, 4-5 cm long (incl. lobes), white with crimson throat, the tube c. twice as long as the rounded lobes. Leaves 2-jugate, the entire leaflets blunt at apex, nerves and veins not distinctly prominent above. Queensland and New South Wales |
| 2' | Flowers much smaller, at most 3½ cm, the tube 4-6 times as long as the lobes; lobes less than c. 1 cm diameter. Leaflets acute, nerves and veins usually distinctly prominent above, mostly toothed towards the apex. |
| 3 | Corolla 12-15 mm long, narrow-cylindric, the tube c. 6 times as long as the lobes. No hair-ring at the staminal base. Calyx 3-5 mm. Petiole above at base with one or a few large glands; leaf-rachis narrowly winged. |
| 3' | Corolla 20-35 mm long, the tube c. 4 times as long as the lobes, the mouth and upper part of the tube inside bearded. Calyx c. 6-7ll2 mm. Petiole without glands; rachis narrowly winged; leaflets dentate in upper part, venation not fine-tessellate raised above. |
| 4 | Leaflets entire, 3-4-jugate, 5-12 by 2-5 cm. Corolla c. 12-13 mm, tube ± curved, c. 2-3 mm wide, no beard in the mouth and tube, lobes c. 2 mm. Ovary orbicular, with sessile glands. Venation on upper surface of leaflets raised, but not fine-tessellate. Flowers cream-coloured, lobes and throat pink-shaded. Queensland. |
| 4' | Leaflets apically toothed, (l-)2-3-jugate, 6-8½ by 3½-4 cm. Corolla tube straight, c. 20 mm long, c. 5 mm wide, mouth and upper part of tube inside bearded, lobes c. 3-4 mm. Ovary obconical-oblong, eglandular. Venation on upper surface of leaflets raised, fine-tessellate. (Corolla tube yellow, the lobes white) |
| 5 | Corolla straight, tubular, 20-25 mm long, with yellow tube, the lobes white to pale red or streaked red, inside with a distinct hair-ring near the insertion of the stamens. Ovary ± conical, eglandular. Pedicels slender, 1-2 cm |
| 5' | Corolla c. 30-35 mm long, white with pale yellow mouth, infundibuliform, with a fairly narrow lower part of the tube, widened apically, inside at the insertion of the stamens with a few hairs. Ovary ellipsoid, with sessile glands. Pedicels c. 5 mm. Queensland. Cf. STEEN. J. Arn. Arb. 12 (1931) 149, pl. 35 |
