They are annual or perennial herbaceous vines, bines and (a few species of) woody shrubs, growing to 0.3–3 m tall. The leaves are spirally arranged, and the flowers trumpet-shaped, mostly white or pink, but blue, violet, purple, or yellow in some species.
Many of the species are invasive weeds; but others are cultivated for their attractive flowers, while some are globally threatened.
Convolvulus species are used as food plants by the larvae of some Lepidoptera species, including the convolvulus hawk moth, the sweet potato leaf miner (Bedellia somnulentella) and the gem; the leaf miner Bucculatrix cantabricella feeds exclusively on C. cantabricus.
Sunset Western Garden Book. 1995. 606–07. ↩
Carine, M. A. and L. Robba. (2010). Taxonomy and evolution of the Convolvulus sabatius complex (Convolvulaceae). Phytotaxa 14 1. http://www.mapress.com/phytotaxa/content/2010/f/p00014p021f.pdf ↩
Convolvulus. Flora of China. http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=107909 ↩
Convolvulus. The Jepson eFlora. 2013. http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=11474 ↩
Parnell, J. and Curtis, T. 2012. Webb's An Irish Flora. Cork University Press. ISBN 978-185918-4783 /wiki/ISBN_(identifier) ↩