Description: Perennial, or rarely annual herbs with trailing or twining stems.
Leaves simple, entire to deeply lobed, often hastate or sagittate, glabrous or with simple hairs.
Flowers axillary in 1–few-flowered cymes, bracteolate. Sepals 5, free, equal or subequal. Corolla funnel-shaped or campanulate, entire or slightly 5-lobed, mid-petaline band hairy [or rarely glabrous]. Stamens 5, filaments slightly unequal bearing low tubercles from base of corolla to above the point of attachment. Ovary ovoid, 2-locular with 2 ovules per loculus, glabrous; style 1 with 2 linear or oblong stigmatic lobes.
Capsule globose or ovoid, splitting longitudinally into 2–4 valves.
Distribution and occurrence: World: c. 250 species, cosmopolitan, mainly temperate & subtropical regions. Australia: c. 13 species (11 species endemic, 2 species naturalized). Bindweeds
Convolvulus eyreanus possibly occurs in the Far North Western Plains area.
Text by R. W. Johnson; updated by Peter G. Wilson, Dec 2020. Key modified by Peter G. Wilson from R.W.Johnson Fl. NSW and Wood, J.R.I., Williams, B.R.M., Mitchell, T.C., Carine, M.A., Harris, D.J. & Scotland, R.W. (18 June 2015), A foundation monograph of Convolvulus L. (Convolvulaceae). Phytokeys 51: 56-57
Taxon concept:
| | Key to the species | |
| 1 | Leaves subtending flowers hastate or sagittate; lamina mostly entire or irregularly crenate; basal lobes sometimes with 2 teeth or lobes (but lobes never ascending) | 2 |
| Leaves subtending flowers crenate, serrate or shallowly lobed; base auriculate or, if more or less hastate, then ascending lobes present | 7 |
| 2 | Sepals to 4 mm long with a rounded to truncate, emarginate apex | 3 |
| Sepals 4–7 mm long with an acute to rounded, apiculate apex
Back to 1 | 4 |
| 3 | Leaves glabrous or with a few weak, erect hairs; petals 15–30 mm long; sepals 3–4 mm long | Convolvulus arvensis |
| Leaves sparsely to moderately hairy with appressed hairs; petals 5–10 mm long; sepals mostly < 3 mm long
Back to 2 | Convolvulus microsepalus |
| 4 | Sepals and older stems with mostly spreading hairs; flowers usually solitary | Convolvulus angustissimus |
| Sepals and older stems with appressed to ascending, short or crisped hairs; flowers 1–3 in a 1-sided dichasium
Back to 2 | 5 |
| 5 | Fruiting pedicels recurved; petals to 10 mm long | Convolvulus graminetinus |
| Fruiting pedicels straight to sinuate; petals > 10 mm long
Back to 4 | 6 |
| 6 | Lamina ovate or oblong with entire margins | Convolvulus remotus |
| Lamina cordate-deltoid with subentire to distinctly crenate margins
Back to 5 | Convolvulus farinosus |
| 7 | Central lobe of lamina distinctly crenate, sericeous; basal lobes not well developed; fruiting pedicels straight; seeds with a narrowly winged margin | Convolvulus crispifolius |
| Central lobe of lamina somewhat crenate to entire, glabrous to densely hairy but never sericeous; basal lobes often well developed; fruiting pedicels straight or recurved; seeds unwinged or wing narrow and more or less discontinuous
Back to 1 | 8 |
| 8 | Fruiting pedicels straight to sinuate | 9 |
| Fruiting pedicels distinctly recurved
Back to 7 | 11 |
| 9 | Petals 10–16 mm long | Convolvulus erubescens |
| Petals up to 9 mm long
Back to 8 | 10 |
| 10 | Stems slender; seeds coarsely tuberculate, < 3.5 mm long | Convolvulus clementii |
| Stems coarse; seeds with many small tubercles, 3.5–4 mm long
Back to 9 | Convolvulus tedmoorei |
| 11 | Leaves densely silvery appressed-hairy | Convolvulus wimmerensis |
| Leaves glabrous to moderately hairy; hairs various but not silvery
Back to 8 | 12 |
| 12 | Seeds finely and densely tuberculate | Convolvulus graminetinus |
| Seeds smooth or with ridge-like tubercles
Back to 11 | 13 |
| 13 | Seeds smooth or with low, reticulate, more or less continuous ridges | Convolvulus angustissimus |
| Seeds with many short, wavy ridges
Back to | Convolvulus recurvatus |
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