Actinidia is a genus of ca. 60 eastern Asian species. About five species are widely cultivated as ornamentals or for their edible fruits (kiwifruit) (Ferguson & Nelson 1995) but only one is really common in cultivation (Actinidia deliciosa). A second species with glabrous, berry-like fruits (Actinidia arguta (Siebold & Zucc.) Planch. ex Miq.) is now much propagated in Belgium and might also occur as an escape in the future. It has already been recorded as an established escape in North America (Hale & Connolly 2014).
Bao Weihong, Dawei Li & Xinwei Li (2018) DNA barcoding of Actinidia (Actinidiaceae) using internal transcribed spacer, matK, rbcL and trnH-psbA, and its taxonomic implication. New Zealand Journal of Botany 56(4): 360-371. [available online at: https://www.tandfonline.com/doi/full/10.1080/0028825X.2018.1491009]
Ferguson A.R. (1984) Kiwifruit: a botanical review. Horticult. Review 6: 1-64.
Ferguson A.R. & Nelson E.C. (1995) Actinidia. In: Cullen J. & al. (eds.), The European Garden Flora, vol. 4. Cambridge University Press, Cambridge: 26-27.
Hale I.L. & Connolly B.A. (2014) Actinidia arguta (Actinidiaceae): A new record of a naturalized introduction in Connecticut. Rhodora 116(967): 352-355. [available online at: http://www.rhodorajournal.org/doi/pdf/10.3119/14-01]
Huang Hongwen (2015) The genus Actinidia: A world monograph. Science Press: 317 p.
Li H.L. (1952) A taxonomic review of the genus Actinidia. J. Arnold Arbor. 33: 1-61.
Li X.W. & Li J.Q. (2010) A review of the infrageneric taxonomy and nomenclature of Actinidia (Actinidiaceae). Ann. Bot. Fennici 47: 106-108.