1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus juliae P.C.Boyce & Hett.

        This species is accepted, and its native range is Borneo (Sarawak).


    CATE Araceae, 17 Dec 2011. araceae.e-monocot.org


    Endemic to Sarawak, so far recorded only from Bukit Merirai, Belaga, Kapit Division.


    Lowland limestone forest, shady areas in humus-filled fissures and holes in limestone, ca 60 m asl.

    General Description

    Medium-sized, moderately robust, aseasonally dormant geophytic herb to 1.2 m tall. Tuber depressed globose, with irregular slightly raised areas, up to 7 cm diam., 4 cm high, surface pale brown, interior white. Leaf solitary, petiole proportionately short compared to the lamina diameter; petiole up to 35 cm long, ca 2 cm diameter at base, moderately turgid, cylindrical, smooth, uniform dull pale red with strongly demarcated irregular reddish brown spots and elongated streaks, subtended by 2-3 marcescent cataphylls, these extending ca 1/3rd the length of the petiole; lamina moderately dissected, up to 55 cm diam., thinly coriaceous, adaxial surface mid green, abaxial surface paler, rachises naked, narrowly canaliculate, pale pinkish green; leaflets elliptic-lanceolate, 2-13 × 2-5 cm, more-or-less sessile, lowermost pair of leaflets symmetrical, all others asymmetrical and obliquely inserted or rhachis, apex shortly acuminate to 1.5 long; margins of larger leaflets very slightly sinuate; 5-7 pairs of primary lateral veins, these adaxially flush to slightly impressed, abaxially very slightly raised; venation forming distinct submarginal veins; interprimary veins less defined, secondary veins forming a weak reticulum. Inflorescence solitary, occasionally two together, flowering before emergence of foliage leaves but in any one colony mature plants at all stages of growth (emerging leaves to ripe infructescences) present simultaneously; peduncle and lower part of spathe encased in sub-fleshy cataphylls; peduncle cylindrical, up to 13 cm long, 5-6 mm diam., pale green, pinkish where exposed to light; cataphylls several per inflorescence; elongate-ovate to linear, 2-15 cm × 1.5 -3.5 cm, pale greenish white, sub fleshy at anthesis, then soon withering and then decaying, drying mid brown. Spathe broadly oblong-ovate, funnel-form, up to 9 cm long × 3 cm wide (fresh), pressed material up to 7 cm diam.; spathe limb accounting for ca 1/3 or less of the spathe length, margins recurved at anthesis and at first somewhat conspicuously green-veined; interior white, smooth, somewhat glossy, exterior very pale greenish white to white; lower spathe convolute and much inflated at anthesis, 2-7 cm long, interior muricate-verrucate, deep reddish purple, exterior pale greenish white, sometimes slightly pink-tinged, the margins recurving to form a conspicuous collar ca 1cm wide, this somewhat glossy and frequently tinged and veined pale green at anthesis. Spadix exceeding spathe, 9-12 cm long. Appendix up to 11 cm long, slender elongate-fusiform, ca 9 mm diam. (fresh), ca 4 mm diam, (dried), white to dull cream, very pronounced-echinate, producing a mild odour of rotten fish during anthesis. Flowers unisexual; male flower zone weakly fusiform-cylindrical, up to 3 cm × 6 mm diam., cream; stamens ca 1 mm long, ca 0.5 mm broad across, pores paired, mostly solitary, the reduction in pore number proceeding upwards towards the appendix, pollen pale yellow. Female flower zone cylindrical, contiguous with the maleflower zone,ca 4.5-7 × ca 7 mm diam.; male flowers dense, not arranged in longitudinal rows; pistils (female flowers) few, densely arranged, ovaries compressed globose, ca 1.5 × 1.5 mm, dark purple, mostly bilocular; stigma sessile, conspicuously three lobed. Infructescence with up to 50 berries, peduncle up to 18 cm long, but mostly buries, ca 7 mm diam. at base, 9 mm diam. at apex, with a dark brown V-shaped scar from the marcescent spathe. Fruit an ellipsoid berry 15-21mm × 8-10 mm, apex rounded, with conspicuous impressed blackish stigma remnants, one seeded, deep orange at maturity. Seeds ellipsoid, 12-17 mm × 7-8.2 mm wide, testa smooth, thin, yellowish green.


    Amorphophallus juliae P.C.Boyce & Hett. appears in other Kew resources:

    First published in Gard. Bull. Singapore 61: 260 (2010)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.


    CATE Araceae
    • Boyce, P.C., Ipor, I.B. & Hetterscheid, W.L.A. A Review of the White-flowered Amorphophallus (Araceae: Thomsonieae) Species in Sarawak. Gardens' Bulletin. Singapore 61, 268 (2010).


    CATE Araceae
    Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 17 Dec 2011.

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0