Established. (Lambdon, P., & Darlow, A. (2012). Flowering plants & ferns of St Helena. Pisces Publications for St Helena Nature Conservation Group);
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- 5.1. Wetlands (inland) – Permanent rivers/streams/creeks (includes waterfalls)
Present at Blue Hill, Girlings, Peak Hill and White Gate. Used as an ornamental plant and grows on wet banks. Not an issue to other species. (Non-Native Species Workshop (2024) Non-Native Species Workshop for St Helena. Workshop, St Helena, 15-19 January 2024.);
Lambdon, P., & Darlow, A. (2012). Flowering plants & ferns of St Helena. Pisces Publications for St Helena Nature Conservation Group. Pisces Publications for St Helena Nature Conservation Group; Non-Native Species Workshop (2024) Non-Native Species Workshop for St Helena. Workshop, St Helena, 15-19 January 2024.; Key, R., Fowler, L., Pryce, D., Wilkins, V., Key, R. (2021). Terrestrial & Freshwater Invertebrates of St Helena. Pisces Publications, Newbury.;