Convolvulus graminetinus R.W.Johnson, Austrobaileya 6: 12. 2001. (Johnson 2001: 12).

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 : 97

57. Convolvulus graminetinus R.W.Johnson, Austrobaileya 6: 12. 2001. (Johnson 2001: 12).

Type.

AUSTRALIA, Queensland, R.W.Johnson 5300 (holotype BRI; isotypes CANB, K!, NE, NSW).

Description.

Perennial herb with trailing or twining stems to at least 50 cm, plant thinly pubescent to glabrescent. Leaves petiolate, dimorphic; petioles 2-10 mm; lowermost leaves 2.5-4 × 0.6-1.6 cm, deltoid, obtuse and finely mucronate, entire, base truncate and briefly cuneate onto the petiole, auricles absent; middle leaves similar but base more or less cordate, auricles present, often bifid or tridentate, the central lobe longer and narrower; middle and upper leaves with a narrowly linear-lanceolate central lobe 3-6 × 0.1-0. 6 cm, the basal auricles more or less reflexed so base sagittate, inconspicuous, bifid or trifid, 3-5 mm long, segments usually very narrow. Flowers solitary (very rarely paired), pedunculate, axillary; peduncles 1.2-3.5(-5.5) cm, recurved in fruit; bracteoles 1-2.5 mm, filiform; pedicels 4-12 mm; sepals 4-6 × 2.5-3 mm, obovate or elliptic, rounded and mucronate, scarious-margined, glabrous or pubescent on dorsal surface near apex; corolla 0.7-1.6 cm long, pink, shallowly lobed with triangular lobes, midpetaline bands pilose; ovary glabrous; style glabrous, divided 3-4 mm above base, stigmas 1.5-2 mm. Capsule glabrous; seeds with prominent wavy tubercles. [ Johnson 2001: 12-14, figs3-4, map 2]

Distribution.

Australia: Northern Territory, Queensland and New South Wales (Evans 3248, Must 1510, Johnson 2075, Hubbard 3171, McDonald 46, Clemens s.n. [9/1945], McBarron 14875, Melville 3425). Reported from New Zealand ( Heenan et al. 2003) but possibly extinct.

Notes.

Very immature plants could be confused with Convolvulus arvensis but the corolla is much smaller. More mature plants without lower leaves are similar morphologically to Convolvulus remotus but the fruiting peduncle is recurved. The strongly tuberculate seeds and the leaves with a very long narrow central lobe combined with the small bifid auricles are also rather distinct.