Arenga engleri Becc., Malesia 3: 184 (1889)

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Japanpresent (World Checklist of Arecaceae)B
Nansei-shotopresent (World Checklist of Arecaceae)B
Taiwanpresent (World Checklist of Arecaceae)B
Taiwan. (Henderson, A.J., A New Species of Arenga (Palmae) in Taiwania 51(4). 2006)A

Discussion

  • This species is widely cultivated. One specimen, Chung 6374, from Fukien Province, China, is said by Merrill (1937) to be possibly cultivated. (Henderson, A.J., A New Species of Arenga (Palmae) in Taiwania 51(4). 2006)A

Biology And Ecology

  • Lowland forest, at low elevations. (Henderson, A.J., A New Species of Arenga (Palmae) in Taiwania 51(4). 2006)A

Common Name

  • Soan-tsang (Taiwanese), shan-tsong (Mandarin). (Henderson, A.J., A New Species of Arenga (Palmae) in Taiwania 51(4). 2006)A

Description

  • Stems clustered, to 4 m tall, 10-15 cm diameter. Leaves pinnate; sheaths fibrous; ocrea not seen; petioles to 1.8 m long, covered with dark brown, peltate scales; rachis to 3 m long, tomentose as the petiole; pinnae 38-41 per side of rachis, linear, flat adaxially, very briefly lobed along the margins, without ears at the base, regularly arranged and spreading in the same plane except for the basal few pinnae, these paired; middle pinnae 43-49 cm long, 2-2.2 cm wide. Inflorescences interfoliar, unisexual, to 60 cm long, not seen in their entirety; staminate rachillae 9.7-27.6 cm long, 3.6-4 mm diameter, numerous, glabrous; staminate flowers 8-14 mm long, spirally and distantly arranged; sepals 2-2.5 mm long; petals 9-14 mm long; filaments 2-4 mm long; anthers 3-6 mm long; stamens 25-37; pistillate rachillae 27-32 cm long, 5-7.4 mm diameter, glabrous; pistillate flowers spirally and distantly arranged, 3 mm long; sepals 2.5 mm long, broadly imbricate, gibbous; petals 3 mm long, valvate for about two thirds their length; fruits globose, 1.5 cm diameter, orange or red. (Henderson, A.J., A New Species of Arenga (Palmae) in Taiwania 51(4). 2006)A

Materials Examined

  • TAIWAN. Kaohsiung co.: Rokki, 300 m, 13 May 1934, Gressitt 41 (NY).Nanto co.: Musha, 12 Mar 1918, Wilson 10022 (K, US). Unknown province: no locality, no date, Henry 798 (K, NY, US); Tong An, Chikutoki, E of Kagi, 9 Mar 1912, Price 148 (K). (Henderson, A.J., A New Species of Arenga (Palmae) in Taiwania 51(4). 2006)A

Bibliography

A. Henderson, A.J., A New Species of Arenga (Palmae) in Taiwania 51(4). 2006
B. World Checklist of Arecaceae