Calamus tenuis Roxb., Fl. Ind. ed. 1832 , 3: 780 (1832)

Primary tabs

http://media.e-taxonomy.eu/palmae/photos/palm_tc_29970_1.jpg

Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Assampresent (World Checklist of Arecaceae)B
Bangladeshpresent (World Checklist of Arecaceae)B
Cambodiapresent (World Checklist of Arecaceae)B
Indiapresent (World Checklist of Arecaceae)B
Jawapresent (World Checklist of Arecaceae)B
Laospresent (World Checklist of Arecaceae)B
Myanmarpresent (World Checklist of Arecaceae)B
Sumaterapresent (World Checklist of Arecaceae)B
Thailandpresent (World Checklist of Arecaceae)B
Vietnampresent (World Checklist of Arecaceae)B
West Himalayapresent (World Checklist of Arecaceae)B
India (North-east and North-central), Bangladesh, Myanmar, Thailand (North), Laos (Central), Vietnam (Tonkin) and Indonesia (Sumatra and Java). Probably also Vietnam (Cochinchina) (Gagnepain & Conrard 1937). (T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002)A

Discussion

  • Beccari (1913) clearly stated that he considered C. horrens no more than the Javan representative of C. tenuis but for some reason did not formally synonymise them. We have examined the type and good modern material from Java and could find no differences from C. tenuis. Over 20 further specimens from Java were examined by JD in BO but are not cited here. The specimen above also represents the first published record from Sumatra. The inclusion of the Indonesian populations makes C. tenuis one of the most widespread of all rattans, with a range comparable to that of C. viminalis. (T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002)A

Biology And Ecology

  • Scrub, often in areas which flood regularly, at 200 - 300 m. (T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002)A

Conservation

  • Unknown, but the wide range of the species suggests that it is likely to be secure in at least some areas. The Lao populations occur in densely-populated lowland floodplains and, although many plants remain, future intensification of land-use may reduce numbers greatly. The species is severely threatened in Java. (T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002)A

Common Name

  • wai nyair, nyair (Lao Loum). (T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002)A

Uses

  • The cane is of high quality for handicrafts and accepted in trade. The shoot is edible. The cultivation of this species for the production of edible shoots is becoming increasingly widespread in Laos (Belcher 1999, Sengdala & Evans 1999, Evans & Sengdala in press) and also occurs in North-east Thailand. (T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002)A

Materials Examined

  • INDIA (NORTH-CENTRAL): NWP, Dehra Dun Distr., Nov. 1892, (fr.), Gamble 24014 (K). (NORTH-EAST): Upper Assam, Banks of the [?] River, March 1870, (pist.), Mann, G. s.n. E102 (K). BANGLADESH: Megna, 13 Dec. 1850, (fr.), Hooker & Thompson s.n. E95 (K); Chittagong, Roxburgh s.n. (K [illustration prepared for Fl. Ind.]). MYANMAR: Rangoon, undated, (fr.), McClelland s.n. E131 (K). THAILAND (NORTH): Chiang Rai Province, Mae Chan Distr., Ban Mai Pattana, 28 July 1988, (stam.), Maxwell, J. E 88 - 925 (BKF). LAOS (CENTRAL): Vientiane Municipality, Naxaithong Distr., Ban Nong Khankhou, 20 Feb. 1998, (fr.), Khamphone KP 121 (FRCL, K). VIETNAM (TONKIN): Hoaping Province, Mieu village, undated, (fr.), Chen, S. Y. 14442 (KUN). INDONESIA (SUMATRA): Djambi, 2 km upriver from town, undated, (ster.), Dransfield, J. 2546 (K, BO). (JAVA): E Java, Sukamade, Cagar Alam Meru/Betiri, 20 May 1973, (fr.), Dransfield, J. 3523 (K); Java, undated, Blume s.n. (L). (T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002)A

Bibliography

    A. T. Evans & K. Sengdala & B. Thammavong & O.V. Viengkham & J. Dransfield, A Synopsis of the Rattans (Arecaceae: Calamoideae) of Laos and Neighbouring Parts of Indochina. 2002
    B. World Checklist of Arecaceae