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Useful Tropical Plants

Calamus tenuis

Roxb.

Arecaceae

+ Synonyms

Calamus amarus Lour.

Calamus heliotropium Buch.-Ham. ex Mart.

Calamus horrens Blume

Calamus royleanus Griff.

Calamus stoloniferus Teijsm. & Binn.

Palmijuncus amarus (Lour.) Kuntze

Palmijuncus heliotropium (Buch.-Ham. ex Mart.) Kuntze

Palmijuncus horrens (Blume) Kuntze

Palmijuncus royleanus (Griff.) Kuntze

Palmijuncus tenuis (Roxb.) Kuntze

Rotang royleanus (Griff.) Baill.

Common Name:

Calamus tenuis
Botanical specimens of the plant
Photograph by: O. Beccari; Annals of the Royal Botanic Garden, Calcutta, vol. 11: t. 2 (1906)
Creative Commons License
Calamus tenuis Calamus tenuis Calamus tenuis

General Information

Calamus tenuis is a spiny, evergreen, climbing palm producing long, rather slender, unbranched stems around 5 - 15mm in diameter[
983
Title
Annals of the Royal Botanical Garden, Calcutta Vol. XI and Appendix
Publication
 
Author
Dr Odoardo Beccari
Publisher
Royal Botanic Garden, Calcutta
Year
1908
ISBN
 
Description
This volume of the journal is dedicated entirely to a monograph of the genus Calamus, which remains an important treatment over 100 years later.
].
The plant is commonly harvested from the wild for local use as a food and source of materials. The stem is of high quality for handicrafts and is often traded, both locally and internationally. The cultivation of this species for the production of edible shoots is becoming increasingly widespread in Laos and also occurs in northeast Thailand[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].
This species occurs throughout much of Asia and southeast Asia south into Indonesia. Although it often occurs in areas under heavy human population pressure, its ability to survive in degraded forest suggests that it is unlikely to be threatened with extinction in the near future.The plant is classified as 'Least Concern' in the IUCN Red List of Threatened Species(2013)[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].

Known Hazards

None known

Botanical References

983
Title
Annals of the Royal Botanical Garden, Calcutta Vol. XI and Appendix
Publication
 
Author
Dr Odoardo Beccari
Publisher
Royal Botanic Garden, Calcutta
Year
1908
ISBN
 
Description
This volume of the journal is dedicated entirely to a monograph of the genus Calamus, which remains an important treatment over 100 years later.

Range

E. Asia - India, Bangladesh, Myanmar, Thailand, Cambodia, Laos, Vietnam, Indonesia.

Habitat

Forest within the active floodplain of rivers, including very degraded habitats and fairly scrubby stands[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
].

Properties

Conservation StatusLeast Concern
Edibility Rating *  *  *
Other Uses Rating *  *  *  *
HabitEvergreen Climber
Height20.00 m
Cultivation StatusCultivated, Wild

Cultivation Details


Soils with a high moisture level are preferred by this species. Regular flooding of the planted area has been shown to increase shoot production[
984
Title
Speciality Rattans of the ASEAN
Publication
Blumea 54, pp 39 - 43
Author
A. C. Baja-Lapis
Website
http://www.ingentaconnect.com/content/nhn/blumea
Publisher
National Herbarium, Nederland.
Year
2009
ISBN
 
Description
A description of the uses and agricultural practices for 11 selected species of rattan.
]. Most species in this genus are more or less vigorous climbing plants in rainforests. Leaves of young plants are normally damaged if exposed to too much light, though leaves of older plants will usually tolerate full sun. In general, plants are likely to grow best with their roots in the shade but with enough gap in the canopy to encourage their stems to grow up towards the light. They are also likely to grow best in a humus-rich soil[
K
Title
Plants for a Future
Author
Ken Fern
Description
Notes from observations, tasting etc at Plants For A Future and on field trips.
].
Seedlings are raised in nursery and planted out at the onset of the rainy season. When planted, they can be mixed with other crops like peanut[
984
Title
Speciality Rattans of the ASEAN
Publication
Blumea 54, pp 39 - 43
Author
A. C. Baja-Lapis
Website
http://www.ingentaconnect.com/content/nhn/blumea
Publisher
National Herbarium, Nederland.
Year
2009
ISBN
 
Description
A description of the uses and agricultural practices for 11 selected species of rattan.
].
Overhead shade should be manipulated at about 6-monthly intervals for the first 2 - 3 years of a young plant’s life to ensure they receive sufficient light to grow vigorously. About 40 - 50% light penetration is generally considered to be ideal for promoting stem growth.
Little care is needed once the seedlings are established. It is important, however, to weed the area surrounding the seedlings occasionally until the plants are more than 2 metres tall.
In an experimental trial of this species, better survival and growth performance was attained at somewhat higher elevations under tree canopies[
984
Title
Speciality Rattans of the ASEAN
Publication
Blumea 54, pp 39 - 43
Author
A. C. Baja-Lapis
Website
http://www.ingentaconnect.com/content/nhn/blumea
Publisher
National Herbarium, Nederland.
Year
2009
ISBN
 
Description
A description of the uses and agricultural practices for 11 selected species of rattan.
].
When fertilized with green manure or without any fertilizer, shoot length growth and production of new shoots was better than when biofertilizers were applied[
984
Title
Speciality Rattans of the ASEAN
Publication
Blumea 54, pp 39 - 43
Author
A. C. Baja-Lapis
Website
http://www.ingentaconnect.com/content/nhn/blumea
Publisher
National Herbarium, Nederland.
Year
2009
ISBN
 
Description
A description of the uses and agricultural practices for 11 selected species of rattan.
].
A dioecious species, both male and female forms need to be grown if fruit and seed are required.

Edible Uses

Young shoot - cooked[
310
Title
Plant Resources of Southeast Asia
Publication
 
Author
 
Website
http://proseanet.org/
Publisher
 
Year
0
ISBN
 
Description
Lots of information on the uses of the plants of SE Asia.
,
984
Title
Speciality Rattans of the ASEAN
Publication
Blumea 54, pp 39 - 43
Author
A. C. Baja-Lapis
Website
http://www.ingentaconnect.com/content/nhn/blumea
Publisher
National Herbarium, Nederland.
Year
2009
ISBN
 
Description
A description of the uses and agricultural practices for 11 selected species of rattan.
]. Locally considered to be a delicacy in Laos, where they are eaten as a vegetable[
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
,
984
Title
Speciality Rattans of the ASEAN
Publication
Blumea 54, pp 39 - 43
Author
A. C. Baja-Lapis
Website
http://www.ingentaconnect.com/content/nhn/blumea
Publisher
National Herbarium, Nederland.
Year
2009
ISBN
 
Description
A description of the uses and agricultural practices for 11 selected species of rattan.
]. The top 100cm of the plant is used. If the leaf sheaths are left in place until just before cooking then the shoot will remain fresh for up to one week[
984
Title
Speciality Rattans of the ASEAN
Publication
Blumea 54, pp 39 - 43
Author
A. C. Baja-Lapis
Website
http://www.ingentaconnect.com/content/nhn/blumea
Publisher
National Herbarium, Nederland.
Year
2009
ISBN
 
Description
A description of the uses and agricultural practices for 11 selected species of rattan.
].

Fruit - roasted when fully ripe[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
].

Medicinal

None known

Other Uses

The stems are of high quality for such uses as basketry and weaving mats etc[
317
Title
Mansfeld's Database of Agricultural and Horticultural Plants
Publication
 
Author
 
Website
http://mansfeld.ipk-gatersleben.de/pls/htmldb_pgrc/f?p=185:3:4292127278597336
Publisher
 
Year
0
ISBN
 
Description
Terse details of a huge range of useful plants.
,
338
Title
IUCN Red List of Threatened Species
Publication
 
Author
 
Website
http://www.iucnredlist.org/
Publisher
 
Year
0
ISBN
 
Description
A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
]. The stems have a light-yellowish, vitreous surface[
983
Title
Annals of the Royal Botanical Garden, Calcutta Vol. XI and Appendix
Publication
 
Author
Dr Odoardo Beccari
Publisher
Royal Botanic Garden, Calcutta
Year
1908
ISBN
 
Description
This volume of the journal is dedicated entirely to a monograph of the genus Calamus, which remains an important treatment over 100 years later.
].
The long and slender stems of Calamus species are put to various uses according to their size, length, flexibility, elasticity and toughness. The most slender canes are employed entire for binding purposes, and in making chairs, blinds, mats, wicker or basketwork, fishing implements, etc. Twisted together, they make very strong cables. The largest and more resistent canes are used entire as cables, the framework of wicker chairs etc. Usually, however, for many purposes the stems are split throughout their length into 2 - 4 or more strips from which the inner soft brittle and spongy portion is removed by means of a knife or same other instrument, so as to leave the external portion, which is hard, tough, flexible, elastic and has its outer surface very clean and smooth as if it had been varnished[
983
Title
Annals of the Royal Botanical Garden, Calcutta Vol. XI and Appendix
Publication
 
Author
Dr Odoardo Beccari
Publisher
Royal Botanic Garden, Calcutta
Year
1908
ISBN
 
Description
This volume of the journal is dedicated entirely to a monograph of the genus Calamus, which remains an important treatment over 100 years later.
].
Strips vary in width according to the use to which they are to be put. Those for delicate work, such as the network of furniture, small bags, hats, etc, are from 1 - 3mm wide; those employed as lashings in native housebuilding or in fastening the removable head of the Malay axe to its handle are from 5-6 mm wide[
983
Title
Annals of the Royal Botanical Garden, Calcutta Vol. XI and Appendix
Publication
 
Author
Dr Odoardo Beccari
Publisher
Royal Botanic Garden, Calcutta
Year
1908
ISBN
 
Description
This volume of the journal is dedicated entirely to a monograph of the genus Calamus, which remains an important treatment over 100 years later.
].
Collecting and preparing the stems is very simple. The stem is cut near the ground and detached from the trees by taking a strong hold of its base and thus pulling down the entire plant with its leaves. The most recent growth at the top of the plant is removed and then, handling it from the upper end, the stem is forcibly drawn in the opposite direction between two pieces of wood, thus removing the spiny coverings. It is then cut into lengths of about 5 metres, each piece is bent into two equal parts and the stems are fastened into bundles ready for market. The most valued stems are not thicker than a man's little finger and have a fine polished straw-yellow glassy surface[
983
Title
Annals of the Royal Botanical Garden, Calcutta Vol. XI and Appendix
Publication
 
Author
Dr Odoardo Beccari
Publisher
Royal Botanic Garden, Calcutta
Year
1908
ISBN
 
Description
This volume of the journal is dedicated entirely to a monograph of the genus Calamus, which remains an important treatment over 100 years later.
].

Propagation

Seed - it has a fairly short viability and is best sown as soon as it is ripe.
Cite as: Tropical Plants Database, Ken Fern. tropical.theferns.info. 2024-03-29. <tropical.theferns.info/viewtropical.php?id=Calamus+tenuis>

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