Persistent. The single site of 200 sq m in Husdal (at Husvik) was controlled this season. (Floyd, K. (2018) Non-native plants on South Georgia: Season Report 2017/18. Indigena Biosecurity International, Government of South Georgia and the South Sandwich Islands);
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- 13.4. Marine Coastal/Supratidal – Coastal Brackish/Saline Lagoons/Marine Lakes
- 14.1. Artificial - Terrestrial – Arable Land
- 14.2. Artificial - Terrestrial – Pastureland
- 14.3. Artificial - Terrestrial – Plantations
- 14.4. Artificial - Terrestrial – Rural Gardens
- 14.5. Artificial - Terrestrial – Urban Areas
- 15.1. Artificial - Aquatic – Water Storage Areas [over 8 ha]
- 15.2. Artificial - Aquatic – Ponds [below 8 ha]
- 15.3. Artificial - Aquatic – Aquaculture Ponds
- 15.5. Artificial - Aquatic – Excavations (open)
- 15.6. Artificial - Aquatic – Wastewater Treatment Areas
- 15.7. Artificial - Aquatic – Irrigated Land [includes irrigation channels]
- 15.8. Artificial - Aquatic – Seasonally Flooded Agricultural Land
- 15.9. Artificial - Aquatic – Canals and Drainage Channels, Ditches
- 4.1. Grassland – Tundra
- 4.4. Grassland – Temperate
- 5.1. Wetlands (inland) – Permanent rivers/streams/creeks (includes waterfalls)
- 5.10. Wetlands (inland) – Tundra wetlands (inc. pools and temporary waters from snowmelt)
- 5.11. Wetlands (inland) – Alpine wetlands (inc. temporary waters from snowmelt)
- 5.14. Wetlands (inland) – Permanent saline, brackish or alkaline lakes
- 5.15. Wetlands (inland) – Seasonal/intermittent saline, brackish or alkaline lakes and flats
- 5.16. Wetlands (inland) – Permanent saline, brackish or alkaline marshes/pools
- 5.17. Wetlands (inland) – Seasonal/intermittent saline, brackish or alkaline marshes/pools
- 5.2. Wetlands (inland) – Seasonal/intermittent/irregular rivers/streams/creeks
- 5.4. Wetlands (inland) – Bogs, marshes, swamps, fens, peatlands
- 5.5. Wetlands (inland) – Permanent freshwater lakes (over 8 ha)
- 5.6. Wetlands (inland) – Seasonal/intermittent freshwater lakes (over 8 ha)
- 5.7. Wetlands (inland) – Permanent freshwater marshes/pools (under 8 ha)
- 5.8. Wetlands (inland) – Seasonal/intermittent freshwater marshes/pools (under 8 ha)
- 5.9. Wetlands (inland) – Freshwater springs and oases
Terrestrial
Spread is vegetative as the species is not known to flower or set seed at South Georgia. (Floyd, K. (2018) Non-native plants on South Georgia: Season Report 2017/18. Indigena Biosecurity International, Government of South Georgia and the South Sandwich Islands);
James, R., Floyd, K., Pagad, S. & Wong, L.J. (2020) Global Register of Introduced and Invasive Species of South Georgia and the South Sandwich Islands. Version 1.4. Invasive Species Specialist Group ISSG. Checklist dataset; Floyd, K. (2018) Non-native plants on South Georgia: Season Report 2017/18. Indigena Biosecurity International, Government of South Georgia and the South Sandwich Islands;