Eleiodoxa (Becc.) Burret
  • Notizbl. Bot. Gart. Berlin-Dahlem 15: 733 (1942) 


Notes: Distribution: Pen. Thailand to W. Malesia

General Description

Moderate, acaulescent, clustering, armed, hapaxanthic, dioecious palm. Stem subterranean with short internodes, bearing strictly axillary sucker shoots. Leaves robust, pinnate, marcescent; sheath splitting opposite the petiole, unarmed at the extreme base, otherwise armed with neat partial whorls of robust spines and abundant caducous scales, the sheath mouth bearing a tattering ligule-like structure; petiole well developed, channelled adaxially in proximal part, rounded abaxially, circular in cross-section distally, armed with neat, somewhat oblique, partial whorls of slender, rigid spines; rachis armed as the petiole, but more sparsely so; leaflets single-fold, linear-lanceolate, regularly arranged, the apical pair slender, very rarely partly united to the penultimate pair, the margins armed with short spines, surfaces similar in colour, transverse veinlets distinct. Inflorescences aggregated into a terminal compound inflorescence, held erect at ground level between the leaf bases, the staminate and pistillate superficially similar; first-order branches of the compound inflorescence (i.e., the axillary inflorescences) each subtended by a highly reduced leaf or tattering bract, and bearing an empty, short, tubular, 2-keeled prophyll, quickly tattering, and short, tubular, tattering bracts with triangular limbs, each subtending a robust, erect, cylindrical, catkin-like rachilla; rachilla bearing a basal, 2-keeled, tubular prophyll and a few empty bracts at the base and at the very tip, otherwise bearing a tight spiral of imbricate, laterally adnate, low triangular-tipped bracts, each enclosing a dyad of flowers, comprising in the staminate inflorescence, 2 staminate flowers, and in the pistillate, 1 sterile staminate and 1 fertile pistillate flower, each flower bearing a prophyllar bracteole and surrounded by a dense pile of hairs. Staminate flowers pinkish-tinged at anthesis; calyx cupular, striate, with 3 triangular lobes; corolla tubular at the base, split to about 4/5 its length into 3 triangular, valvate petals; stamens 6, borne at the mouth of the corolla tube, filaments fleshy, elongate, abruptly contracted and inflexed at the tip, anthers elongate, introrse; pistillode absent. Pollen ellipsoidal, bi-symmetric; apertures subequatorial diporate; ectexine tectate, coarsely perforate, aperture margins similar; infratectum columellate; longest axis 24–27 µm [1/1]. Sterile staminate flowers like the fertile but with fleshier filaments, not abruptly contracted, and with empty anthers. Pistillate flowers superficially similar to the staminate but larger, the corolla tubular in the basal ca. 1/3; staminodes 6, borne at the mouth of the corolla tube, filaments closely appressed to the corolla, empty anthers somewhat sagittate; gynoecium tricarpellate, triovulate, globose, covered in reflexed scales, stigmas 3, reflexed, sinuous, in bud compressed into a pyramid, locules incomplete, ovules basally attached, anatropous. Fruit almost always 1-seeded, stylar remains apical; epicarp covered in neat vertical rows of reflexed scales, mesocarp somewhat spongy, endocarp not differentiated. Seed ± rounded, sarcotesta thick, sour, closely adhering to the inner integument and difficult to separate from it due to the presence of short radiating fibres, endosperm homogeneous, ± disc-like or very broadly oblate, with large, wide pit at the apex; embryo basal or lateral due to distortion of the fruit. Germination adjacent-ligular; eophyll bifid with narrow, entire lobes. Cytology not studied.

Diagnostic Description

Acaulescent, clustering palm forming dense thickets, in swamps in Southeast Asia and West Malesia; the sheaths and petiole are densely armed with long spines; flowering is hapaxanthic; the fruit has a sarcotesta that is difficult to separate from the rest of the seed.

Morphology

Not studied.

Biology

Eleiodoxa conferta is a highly characteristic, gregarious, undergrowth palm of lowland fresh water swamps, beingparticularly abundant in facies of peat swamp forest where acertain amount of water movement occurs.

Distribution

Although five names have beenpublished, there appears to be only one widespread species, known from South Thailand, Sumatra, Malay Peninsula, and Borneo.

Uses

Leaves areoccasionally used for temporary thatching. The extremely soursarcotesta is used throughout the range of the palm as asubstitute for tamarind in cooking and with sugar is sometimesmade into a sweetmeat.

Common Names

Kelubi or asam paya.

Distribution Map

 
  • Native distribution
Found in
  • Asia-Tropical Indo-China Thailand
  • Malesia Borneo
  • Malaya
  • Sumatera

  Bibliography

  • 1 J. Dransfield & N. Uhl & C. Asmussen & W.J. Baker & M. Harley & C. Lewis, Genera Palmarum. The evolution and classification of palms. 2008
  • 2 Govaerts, R. & Dransfield, J. (2005). World Checklist of Palms: 1-223. The Board of Trustees of the Royal Botanic Gardens, Kew.

 Information From

Palmweb - Palms of the World Online
http://www.palmweb.org
Palmweb 2011. Palmweb: Palms of the World Online. Published on the internet http://www.palmweb.org. Accessed on 21/04/2013
  • A Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
  • B http://creativecommons.org/publicdomain/zero/1.0
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
  • D See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.