Polyalthia rumphii (Blume ex Hensch.) Merr.
Polyalthia rumphii (Blume ex Hensch.) Merr.
Polyalthia rumphii (Blume ex Hensch.) Merr |
Binomial Classification
Division : Magnoliophyta
Class : Magnoliopsida
Order : Magnoliales
Family : Annonaceae
Genus : Polyalthia
Species : Polyalthia rumphii (Blume ex Hensch.) Merr.
Vernacular names : Pisang-pisang; Borneo: Karai, Kenanga, Mempening, Pisang-pisang, Porang-porang, Semukau, Semukau bangkit.
Distribution - Peninsular Malaysia, Sumatra, Java, Borneo, Sarawak, Brunei, Sabah, West-, Central-, South- and East-Kalimantan), Philippines, Celebes, Moluccas, New Guinea and the Solomon islands.
Polyalthia rumphii (Blume ex Hensch.) Merr branch |
Canopy tree up to 26 m tall and 45 cm dbh.
Branches minutely rust-colored pubescent when young, soon glabrous
Stipules absent.
Polyalthia rumphii (Blume ex Hensch.) Merr leave |
Petiole 5-12 mm, glabrous; leaf blade oblong-lanceolate, 10-17 × 3-7 cm, papery to leathery, glabrous, adaxially shiny dark green, secondary veins 7-10 on each side of midvein and prominent on both surfaces, base cuneate to rounded and sometimes oblique, apex acuminate
Polyalthia rumphii (Blume ex Hensch.) Merr flower |
Flowers with ca. 38 mm long petals, green-yellowish, placed on the branches.
Inflorescences axillary, 1-flowered. Flowers 4-7 cm in diam. Pedicel 1-2 cm, appressed pubescent. Sepals subovate to triangular, 6-15 × 3-8 mm, outside puberulent, apex acute. Petals greenish to yellowish, elliptic, oblong-elliptic, or oblong, 3-5.5 × 1.5-3 cm, thin, puberulent or glabrous, apex obtuse; inner petals slightly shorter than outer petals. Stamens oblong; connectives apically broadly rounded, concealing anther cells. Carpels many, oblong, pubescent; ovule 1 per carpel, basal; stigmas clavate to capitate.
Polyalthia rumphii (Blume ex Hensch.) Merr fruit |
Fruitlets ca. 8 mm long, green-yellow-purple, placed in apocarp, fruitlets 1-seeded
Fruiting pedicel ca. 2 cm × 2 mm; monocarp stipes 5-10 × ca. 1 mm, glabrous; monocarps many, ellipsoid, ca. 10 × 5 mm, base rounded, apex acute
Polyalthia rumphii (Blume ex Hensch.) Merr fruit |
Synonym(s):
Guatteria canangioides Rchb.f. & Zoll.
Guatteria parveana Miq.
Guatteria rumphii Blume ex Hensch.
Monoon canangioides (Rchb.f. & Zoll.) Miq.
Polyalthia canangioides (Rchb.f. & Zoll.) Boerl.
Polyalthia canangioides var. parveana (Miq.) Boerl.
Polyalthia glandulosa Merr.
Polyalthia kunstleri King
Polyalthia scortechinii King
Unona borneensis Miq.
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