Egeria densa
Unwanted Organism, National Pest Plant Accord
Egeria
- Scientific Name
- Egeria densa
- Origin
- Introduced plant. Native to South America
- Type
- Weed
- Plant Life-form Type
- Submerged
- Taxonomy
- Planchon
- Presence
- Widely naturalised in North Island and Marlborough. Few sites elsewhere in South Island, first record from the lower Waikato River in 1946
- Habitat
- Moderate flowing to still water bodies, usually in moderately to highly enriched water bodies
- Notes
- Major impacts on indigenous plant biodiversity, hydrogeneration, irrigation, flood protection and recreation.
- Propagation
- Egeria propagates from stem fragments containing lateral buds that give rise to new plants. Egeria does not produce seed in New Zealand, with only male flowering plants being present
- Features
- Submerged perennial. Leaves usually in whorls of 4-5 (sometimes 3-8). Leaves 10-30mm long, narrowing to an acute tip. Egeria is the only oxygen weed with visible white flowers.
- Source
- TIFBIS
- Regional
- Regional Pest Management Strategy: AUK, BOP, NSN/TAS, STL, WTC, MWT, CAN, HKB, MBH, TKI.