1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus infundibuliformis Hett., A.Dearden & A.Vogel

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

    [CATE]

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

    Distribution

    East Malaysia, Sarawak (Kuching, Sri Aman & Kapit Divisions but probably throughout the state and overlooked); Indonesia, Kalimantan Barat.

    Ecology

    Perhumid to everwet lowland mixed dipterocarp to upper hill forest, mainly on sandstones, occasionally on shale, rarely on raised podzols, 50-875 m asl.

    General Description

    Medium-sized, slender, aseasonally dormant geophytic herb to 1.3 m. Tuber depressed-globose to subglobose, pinkish externally, internally deep red, without offset development. Leaf solitary; petiole, pale grey-green to dark green to dark green-purple, with dirty whitish with numerous, confluent, irregular, green spots and scattered white punctiform dots and patches, these more or less raised; lamina weakly dissected, up to 35 cm diam., thinly coriaceous, adaxial surface deep, sometimes weakly metallic, glossy green, abaxial surface paler, rachises naked, ascending, very shallowly and narrowly canaliculate, greyish-green with irregular dark green patches; leaflets lanceolate, margin with numerous small undulations, main veins impressed, 2-11 × 2-5 cm, shortly petiolulate, petiolule 0.2-1 mm long, very slightly canaliculate adaxially, lowermost pair of leaflets symmetrical, all others asymmetrical and obliquely inserted on petiolule, apex shortly acuminate to long acuminate, up to 1.5 long; margins of larger leaflets very slightly sinuate; 5-8 pairs of primary lateral veins, venation forming distinct submarginal veins; interprimary veins much less defined, secondary veins forming a weak reticulum. Inflorescence solitary, short pedunculate; cataphylls whitish with numerous small, pinkish dots and many larger, blackish green, irregular spots; peduncle 4 cm × ca 0.8 cm diam. (base), lengthening in fruit; spathe strongly convolute, funnel-form, obconic in side-view, transversely orbicular-elliptic, 6 × ca 8 cm diam., very widely acute, limb and base poorly differentiated, outside dirty whitish with pale brownish venation and scattered, small, angulate, blackish green spots, inside whitish, the lower half dark maroon, base within strongly, longitudinally ridged. Spadix sessile, very obliquely inserted, slightly longer than spathe; female flower zone oblique, annuliform, 1 mm (dorsal side)-5 mm (ventral side) long × ca 1 cm diam., flowers congested; male flower zone cylindric, base oblique, 0.8-1.3 cm ca 1 cm × diam., flowers congested; appendix cylindric, obtuse, whitish, 6.5 × 1 cm diam., entirely or at least almost entirely, densely covered with hooked stamino des, these in the lower third shortly conical to aristate, some times uncinate and with long, narrowly decurrent, ridge-like bases, upwards shorter or reduced to only the base, up to 2 mm long, bases longitudinally confluent. Pistil (female flower) with ovaries depressed, irregular or cubic, angulate in cross-section, 0.9-1.5 × 1.2-1.5 mm, reddish brown, near the style insertion maroon, unilocular; style absent or only basiscopically developed; stigma sessile or partly sessile, acroscopically orientated, reniform, a shallow depression in the middle, one conic lobe on the out ward facing margin, 0.8-1 mm × 0.3-0.5 mm high, dark greyish brown, surface densely verruculate. Male flower upwards fused into longitudinal chains, otherwise consisting of 3-5 stamens, upper flowers confluent with the lowermost staminodial ridges; stamens ca 1-1.3 × ca 0.7 mm long, rounded, oval or irregular in cross-section, white; filaments absent or nearly so, entirely connate; anthers truncate; pores apical, rounded or elongate (confluent). Infructescence with few to rather many berries, irregular; berries elongate, ca 2 × 0.75 cm, slightly conic, top truncate, orange-red, one-seeded. Seed elongate ellipsoid, ca 1.8 × 0.5 cm, testa pale brown.

    Distribution

    Amorphophallus infundibuliformis Hett., A.Dearden & A.Vogel appears in other Kew resources:

    First published in Blumea 39: 259 (1994)

    Accepted by

    • Boyce, P.C., Ipor, I.B. & Hetterscheid, W.L.A. (2010). A review of the white-flowered Amorphophallus (Araceae: Thomsonieae) species in Sarawak Gardens' Bulletin Singapore 61: 249-268.
    • Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.

    Literature

    Kew Backbone Distributions
    • Boyce, P.C., Ipor, I.B. & Hetterscheid, W.L.A. (2010). A review of the white-flowered Amorphophallus (Araceae: Thomsonieae) species in Sarawak Gardens' Bulletin Singapore 61: 249-268.

    Sources

    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.
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. 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 2019. 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