Lum / Narrow-Leaf Morinda
Morinda angustifolia
- Habit
- Tree
- Found in India
- Assam, Arunachal Pradesh, Nagaland & more
- Flowering
- May-December
How to identify Lum
Identify Lum by combining habit, leaf characters, flower or fruit details, location, and its family pattern. Do not rely on one feature alone.
- Look for a tree habit.
- Confirm leaf surface: Glabrous (smooth, hairless).
- Confirm flower colour: White.
- In season, compare flowering and fruiting time: May-December.
- In India, compare location records such as Assam, Arunachal Pradesh, Nagaland, West Bengal.
- Confirm it sits within the Rubiaceae family pattern, then compare close relatives before deciding it is Lum.
Plant Details
Leaf characters
- Leaf surface
- Glabrous (smooth, hairless)recorded
Typical of the family
- Arrangement
- Opposite
Characters marked “recorded” are for Lum itself; the rest are typical of the Rubiaceae family.
Flower & fruit characters
- Flower colour
- Whiterecorded
Typical of the family
- Flower symmetry
- Actinomorphic (radially symmetrical)
- Inflorescence
- Cyme
- Fruit
- Berry
Characters marked “recorded” are for Lum itself; the rest are typical of the Rubiaceae family — flowering plants only.
Local Names
- Mizo
- Lum
About Lum
A member of the Rubiaceae family, Narrow-Leaf Morinda (Morinda angustifolia) is a tree. In India it has been recorded in Assam, Arunachal Pradesh, Nagaland and 1 other states. It grows in deciduous forests. Flowering and fruiting run from May to December.
Rubiaceae
Coffee/Madder family
Lum belongs to the Rubiaceae family.
The illustration represents the family — not necessarily this exact species.
Explore the Rubiaceae familySnap it. Know it.
Point your camera at Lum 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