Calamus radiatus - Thwaites
Common Name Rotan Rays. Radial Leaf Rotan
Family Arecaceae
USDA hardiness 11-12
Known Hazards None known
Habitats Damp lowland forests at elevations below 300 metres[ 454 , 464 ].
Range E. Asia - Sri Lanka.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Tender Moist Soil Semi-shade Full sun

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The stems of Calamus radiatus are used as material in making baskets, bottoms of chairs, and in tying. Thin strips that are elastic and pliable are made from the stems which can be used as very strong ropes for towing, or for making the frames for hats. Common Names: Rattan

Calamus radiatus Rotan Rays. Radial Leaf Rotan

Calamus radiatus Rotan Rays. Radial Leaf Rotan
Physical Characteristics
 icon of manicon of climber
Calamus radiatus is an evergreen Climber growing to 50 m (164ft) by 4 m (13ft) at a fast rate.
It is hardy to zone (UK) 10 and is frost tender. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Palmijuncus radiatus (Thwaites) Kuntze

Edible Uses
None known
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known


Other Uses
Other uses rating: High (4/5). Other Uses The stems are used in basketry, as a tying material etc[ 454 ]. Although they can be many metres long, they only attain the thickness of a pencil[ 454 ]. In addition to their use in basket making, the stems are used for making the bottoms of chairs, for which purpose they are first split into long thin strips to render them elastic and pliable[ 454 ]. When twisted, they can be used as very strong ropes for towing purposes[ 454 ]. Finally, the thin strips cut from this cane are used for making the frames for hats used by some of the working classes in Sri Lanka[ 454 ].
Cultivation details
Most species in this genus are more or less vigorous climbing plants in rainforests. In general, they are likely to grow best with their roots in the shade but with their stems able to grow up to the light. They are also likely to grow best in a humus-rich soil[ K ]. A dioecious species, both male and female forms need to be grown if fruit and seed are required.
Other Names
Common Names: Rattan, Rotan Rays. Radial Leaf Rotan
Found In
Coming Soon
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

None Known
Conservation Status
IUCN Red List of Threatened Plants Status : This taxon has not yet been assessed.
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Acorus calamusSweet Flag - Calamus34
Calamus caesiusRotan Sega20
Calamus mananRotan Manau00
Calamus ovoideusEgg-shaped Rattan. Rotan Ovoid20
Calamus rotangRattan, Rotang, Rattan Cane22
Dendrocalamus asperGiant Bamboo, Dragon bamboo, Sweet bamboo40
Dendrocalamus giganteusGiant Bamboo, Bhalu bans, Dhungre bans21
Dendrocalamus latiflorusSweet Bamboo, Sweet bamboo shoot, Taiwan giant bamboo40
Himalayacalamus asper 00
Himalayacalamus brevinodus 20
Himalayacalamus cupreus 30
Himalayacalamus falconeri 30
Himalayacalamus fimbriatus 10
Himalayacalamus hookerianusPadang20
Indocalamus latifolius 00
Thamnocalamus aristatus 20
Thamnocalamus spathaceusUmbrella Bamboo00
Thamnocalamus spathiflorus 20
Thamnocalamus tessellatusBergbamboes00


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Links / References
For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.
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Subject : Calamus radiatus  

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