Satakentia H.E.Moore
  • Principes 13: 5 (1969) 


Notes: Distribution: Nansei-shoto

General Description

Moderate, solitary, unarmed, pleonanthic, monoecious palm. Stem erect, usually enlarged and with a mass of adventitious roots at the base, columnar above, green to brown, longitudinally striate, ringed with close leaf scars. Leaves pinnate, spreading; sheaths tubular, forming a prominent crownshaft and with a prominent chartaceous ligule; petiole short, adaxially channelled with a central ridge, abaxially rounded; rachis elongate, flattened adaxially, rounded abaxially, tomentose; leaflets regularly arranged, acute, single-fold, midrib evident abaxially, marginal nerves thickened, usually 2(–3) secondary ribs, and numerous tertiary veins on each side, glabrous adaxially, ramenta present abaxially near the base of the midrib, transverse veinlets not evident. Inflorescences infrafoliar, densely and minutely stellate-tometose, branched to 2 orders basally, to 1 order distally; peduncle short, stout; prophyll tubular, terete, 2-keeled laterally, briefly beaked, much shorter than the peduncular bracts; first peduncular bract, complete, tubular, thick, woody, terete, beaked, enclosing a second almost complete and similar peduncular bract, both splitting abaxially and caducous at anthesis, a prominent but much shorter third and sometimes fourth, chartaceous incomplete peduncular bract also developed; rachis about as long as the peduncle, tapering, densely tomentose, angled, bearing spirally inserted, rather large, acute bracts subtending basal branches and smaller rounded bracts subtending distal branches; rachillae elongate, rather stout, stiff, bearing spirally arranged, low, rounded bracts subtending flowers borne in triads of 2 staminate and 1 pistillate in lower 1/4 to 1/3 of the rachillae, paired to solitary staminate flowers distally. Staminate flowers nearly symmetrical; sepals 3, distinct, imbricate, ± rounded; petals 3, distinct, valvate, more than twice as long as the sepals; stamens 6, filaments distinct, awl-shaped, inflexed at the apex in bud, anthers oblong in outline, latrorse; pistillode as long as the stamens, cylindrical, with obliquely subcapitate apex. Pollen ellipsoidal asymmetric; aperture a distal sulcus; ectexine tectate, perforate, aperture margin similar; infratectum columellate; longest axis 43–45 µm [1/1]. Pistillate flowers ovoid; sepals 3, distinct, broadly imbricate; petals 3, distinct, imbricate, with shortly valvate apices; staminodes 3, tooth-like, on one side of the gynoecium; gynoecium ovoid, unilocular, uniovulate, stigmas 3, recurved at anthesis, ovule pendulous, anatropous. Fruit ovoid-ellipsoidal with eccentrically apical stigmatic remains; epicarp smooth but drying longitudinally lines, mesocarp with numerous flat longitudinal fibres in thin flesh and some red-brown stone cells near the apex, endocarp thin, fragile, operculate at the base of the elongate hilar seam, not adherent to the seed. Seed ellipsoidal, hilum elongate, raphe branches anastomosing, endosperm homogeneous; embryo basal. Germination adjacent-ligular; eophyll bifid. Cytology not studied.

Diagnostic Description

Moderate solitary pinnate-leaved palm from the Ryukyu Islands in southern Japan, remarkable for the two large peduncular bracts and small fruit.

Morphology

Fruit (Essig et al. 1999).

Biology

Growing on hillslopes or more rarely near the sea; often growing in densemore-or-less even-aged stands.

Distribution

A single species on Ishigaki Island (Yonehara) and Iriomote Island (Hoshitate, Nakam River,Sonai, and Yoeyama Group of the Ryukyus).

Uses

Cultivated as an ornamental. The ‘cabbage’ is said to havebeen eaten during World War II.

Common Names

Noyashi and yaeyama-yashi.

Distribution Map

 
  • Native distribution
Found in
  • Asia-Temperate Eastern Asia Nansei-shoto

  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.