Ban Long / Primrose Willow
Ludwigia octovalvis
- Habit
- Undershrub
- Found in India
- Karnataka, West Bengal, Madhya Pradesh & more
- Flowering
- Throughout the year
How to identify Ban Long
Identify Ban Long by combining habit, leaf characters, flower or fruit details, location, and its family pattern. Do not rely on one feature alone.
- Look for a undershrub habit.
- Confirm flower colour: Yellow.
- In season, compare flowering and fruiting time: Throughout the year.
- In India, compare location records such as Karnataka, West Bengal, Madhya Pradesh, Assam and nearby regions.
- Confirm it sits within the Onagraceae family pattern, then compare close relatives before deciding it is Ban Long.
Plant Details
- Scientific name
- Ludwigia octovalvis
- Genus
- Ludwigia
- Family
- Onagraceae
- Habit
- Undershrub
- Distribution
- Tropics of the World
- Found in India
- Karnataka, West Bengal, Madhya Pradesh, Assam, Gujarat, Rajasthan, Tamil Nadu, Andaman & Nicobar Islands, Andhra Pradesh, Arunachal Pradesh, Bihar, Himachal Pradesh, Kerala, Maharashtra, Manipur, Meghalaya, Uttar Pradesh, Uttarakhand
- Flowering & fruiting
- Throughout the year
- Conservation status
- Least Concern (LC)
Flower & fruit characters
- Flower colour
- Yellowrecorded
Typical of the family
- Fruit
- Berry
Characters marked “recorded” are for Ban Long itself; the rest are typical of the Onagraceae family — flowering plants only.
Local Names
- Hindi
- बन लौंग Ban long
- Bengali
- বন লবংগ Ban lavanga
- Tamil
- Kattukkirampu
- Kannada
- ಕಾವಾಕುಲ, ಕಾವಾಕುಳ, ಕಾವಾಕೂಲ
- Malayalam
- kattukarayamapu
- Marathi
- पाण लवंग Pan lavang
About Ban Long
Primrose Willow (Ludwigia octovalvis) belongs to the Onagraceae family, where it grows as a low shrub. In India it has been recorded in Karnataka, West Bengal, Madhya Pradesh and 15 other states. It flowers and fruits through much of the year.
Onagraceae
Evening-Primrose Family
Ban Long belongs to the Onagraceae family.
The illustration represents the family — not necessarily this exact species.
Explore the Onagraceae familySnap it. Know it.
Point your camera at Ban Long or any plant and SASYA identifies it instantly — on-device, offline, and private.
Common plant problems
If you are starting from symptoms instead of a diagnosis, use the plant disease symptom checker to narrow the cause before treating.
All plant problem & care guides