Daemonorops ingens

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Daemonorops
(deh-mohn-OHR-ohps)
ingens (IHN-jehns)
Di3071.jpg
"New shoots developing from inflorescence tips." Base of Pagon Ridge, Brunei Darussalam. Photo by Dr. Wong Khoon Meng, Royal Botanic Gardens, Kew/Palmweb.
Scientific Classification
Genus: Daemonorops
(deh-mohn-OHR-ohps)
Species:
ingens (IHN-jehns)
Synonyms
None set.
Native Continent
Asia
Asia.gif
Morphology
Habit: Clustering
Leaf type: Pinnate
Culture
Survivability index
Common names
Podowon (Dus.), Wi Baloboh (Ib.) (J. Dransfield. 1997)

Habitat and Distribution

Daemonorops ingens is found in Borneo. Known from several collections from throughout
Bukit Patam, Brunei Darussalam. Photo by Dr. John Dransfield, Royal Botanic Gardens, Kew/Palmweb.
Brunei. Elsewhere in Sarawak, Sabah and once recorded in Kalimantan. Endemic to Borneo. D. ingens is a spectacular species, characteristic of damp slopes near valley bottoms, or along spring lines on slopes up to 800 m altitude. (J. Dransfield. 1997)/Palmweb.

Description

Massive clustering acaulescent (stemless) palm with short decumbent subterranean stems to 15 cm in diam. and very crowded nodes. Leaf ecirrate, to 6 m including the sheath and petiole; sheath open throughout its length, to 12 cm wide, tapering into the petiole; petiole together with sheath to 2 m long, armed with whorls of huge, slightly reflexed pale straw-coloured spines to 11 × 1 cm, with few scattered solitary spines, the petiole surface marked with the indentations of the spines in bud, and covered with deciduous pale to cinnamon-brown indumentum; rachis armed as the petiole but spines smaller and sparser; leaflets about 35 on each side of the rachis, regularly arranged, about 6 cm distant, the largest to 75 × 4.5 cm, dark green, concolorous, acuminate in a bristly drip-tip and armed with sparse bristles along the margins and along 3 veins on the undersurface, transverse veinlets obscure. Young leaves tinged pink. Inflorescences arching out of the crown on peduncle to 2 m or more long, frequently the inflorescence tips developing into new vegetative shoots and rooting in contact with the ground; primary branches to 12, crowded at the tip of the peduncle, subtended by tattering, brown hairy bracts to 50 cm, secondary and tertiary axes bearing conspicuous tattering bracts; male flowers relatively large, to 7 × 4.5 mm; rachillae of female inflorescence to 8 × 0.5 cm; female flower to 11 × 6 mm, dull dirty-brown except for conspicuous pink stigmas. Mature fruit very large, rather variable in shape, from ovoid to obpyriform, to 45 × 20 mm, tipped with a short beak and covered in 15-16 vertical rows of matt chestnut brown, rarely paler brown, dark margined scales. Seed irregularly grooved and angled; sarcotesta yellowish, sweet; endosperm deeply ruminate. Seedling leaf with 4 spreading leaflets. (J. Dransfield. 1997)/Palmweb. Editing by edric.

D. ingens could easily be confused with a species ofSalacca; in fact it looks more like a salak than a rattan. However, the inflorescence and floral details show indeed that it is a species of Daemonorops. Furthermore, in Salacca the terminal leaflet pair is always compound and lobed, whereas D. ingens has single-fold terminal leaflets; asam paya or kelubi (Eleiodoxa conferta (Griff.) Burret) also has single-fold terminal leaflets, but its flowers and fruits are held in a huge club-like mass at ground level in the centre of the leaf rosette, the petiole spines are much finer than those of D. ingens and it is only found in peat swamp forest where D. ingens has never been found. D. ruptilis var. acaulescens is a much smaller plant and the fruit is only a fraction of the size of that of D. ingens. In a few of the populations of D. ingens in Brunei, the inflorescences tip over, and when in contact with the ground, root, develop shoots and grow into new plants. (J. Dransfield. 1997)/Palmweb.

Culture

Comments and Curiosities

Etymology: Huge.

Uses: The leaves may be used as thatch, and the fruit eaten.


External Links

References

Phonetic spelling of Latin names by edric.

Special thanks to Geoff Stein, (Palmbob) for his hundreds of photos.

Special thanks to Palmweb.org, Dr. John Dransfield, Dr. Bill Baker & team, for their volumes of information and photos.

Glossary of Palm Terms; Based on the glossary in Dransfield, J., N.W. Uhl, C.B. Asmussen-Lange, W.J. Baker, M.M. Harley & C.E. Lewis. 2008. Genera Palmarum - Evolution and Classification of the Palms. Royal Botanic Gardens, Kew. All images copyright of the artists and photographers (see images for credits).

Dransfield, J. 1997. The Rattans of Brunei Darussalam. Ministry of Industry and primary Resources, Brunei Darussalam.


Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.

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