Synon. Nov. Areca macrocalyx Zipp. ex Blume, Rumphia 2: 75 1839. Type: New Guinea, SW
17.5 × 5–10 mm; petals 3, imbricate, 10–20 × 7.5–10 mm; gynoecium 10 × 17.5 mm including stigma 5 mm; staminodes circular, membranous. F
RUITS
typically obovate, but somewhat variable from connate to spindle shaped to almost globose, to 5 × 3 cm, with
beak 1–14.5 mm long, green to bright yellow or orange when ripen. S
EEDS
to 3 × 2 cm, ovate, rounded apically and flatted basally, hard; endosperm ruminate.
Distribution and ecology: This is the most widespread species of Areca in the EWL
hotspot with distribution from the Moluccas Islands in the west through New Guinea to the Solomon Islands in the east. This species is also occupying the widest ecological
spectrum, growing in the lowlands to the highland from sea level to 1500 m.
Specimen studied: INDONESIA. Moluccas Province, Seram Island, Masohi, Waipia,
Jerili village, 10 m, 19.xi.1981, Mogea 3139 BO, K; Aru Islands, Kobroor Island, 10 m, 6.xi.1994, van Balgooy 6864 L, BO; Vokan Wokam, iii.1875, Beccari s.n. holotype
FI; isotype K. West Papua Province, Kepulauan Raja Ampat District, Misool Island,
Motlol, 10 m, 22.i.2002, Heatubun et al. 360 K, MAN; c. 10 km SW of Limalas village, around Wavari camp, 5 m, 20.i.2002, Wanggai et al. 03 AAU, BO, K, LAE;
Gag Island, Kaplebet River, 10 m, 28.vii.2006, Heatubun et al. 747 BO BPK Manokwari, K; Waigeo Island, Omrab, 21.viii.1956, Manuputty BW 958 BO, CANB,
L, MAN; Sorong District, road between Bayangkate village to Makbon, 72 m, 9.iii.2008, Heatubun et al. 876 BO, BPK Manokwari, K; Manokwari District,
Manokwari sub district, Amban, Pantai Anggori, 5 m, 9.viii.1995, Dransfield et al. JD 7533
BO, K, MAN; Mupi, c. 40 km S of Manokwari, along coast of Arfak Nature Reserve, 50 m, 11.iv.1994, Mogea 6204 BO, K, MAN; Ransiki subdistrict, Siwi
village, 28.i.1999, Heatubun 292 AAU, BO, FTG, MAN; Mountains S of the Arfak Plains, step ridge between the Arfak Plains and Mt. Itsiwei, 900 m, 27.iv.1994, Sands et al.
6365 BO, K; Teluk Bintuni District before as Bintuni subdistrict of Manokwari
District, near Saengga village, 10 m, Maturbongs et al. 728 BO, K; Kaimana District before as Kaimana subdistrict of Fakfak District, Etna bay, Urie Base camp, km-36 road
of PT. Kaltim Hutama, 70 m, 1.ii.2001, Heatubun et al. 331 AAU, K, MAN; SW coast New Guinea, Kaimana District, Etna bay subdistrict, Zippel 169 holotype L.