1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus polyanthus Hett. & Sizemore

        This species is accepted, and its native range is NE. Thailand.

    [CATE]

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

    Distribution

    North Eastern Thailand: Loei.

    General Description

    Tuber elongate, branched, 1–10 × 1–2.5 cm, white, branching freely. Petiole 4–15 × 3–6 mm, smooth, pale green; leaf blade 5–26 cm, subpedate, rachises wingless, anterior main segment undivided; leaflets rhombic, 3–10 × 2–5.5 cm, adaxially green. Inflorescences rarely solitary, often appearing several months after leaf development and close to the end of the growing season, often developing simultaneously, short pedunculate; peduncle entirely or largely subterranean, 1–3 cm × 2–5 mm, smooth, white; spathe broadly triangular, 2–4 × 2.5–5 cm, base and limb separated by a shallow constriction, base strongly convolute, partly subterranean or entirely exposed, exterior greyish, interior smooth, dark purple; limb erect, strongly concave, acute, margin with elongate glandular epidermal cells, resulting in a micro–fimbriate appearance, exterior dirty whitish with many minute greyish flesh-coloured dots, interior dirty whitish with minute, greyish purple dots; spadix sessile, much longer than spathe, 6.5–13 cm long; pistillate flower zone cylindrical, 1–3 × 5–6 mm, flowers in 1–3 rows, congested; ovaries irregularly 2–3-lobed, 1–1.5 × 1 mm high, white with a few minute, pinkish dots; style very short, 0.05–0.2 mm long, ca 0.3 mm at the apex, conical, white; stigma depressed, irregularly elongate or triradiate, ca 0.2–0.3 × 0.1 mm high, dirty brown or white, papillate; staminate flower zone cylindrical, 4–7 × 4–6 mm, flowers congested, or partly vertically separated and arranged in oblique near-verticils; staminate flowers 1–3-androus; stamens 0.5–0.8 mm, ca 0.5 mm long; filaments ca 0.2 mm long, connate; anthers ca 0.3 mm long, truncate, orange; pores apical, elliptic after anthesis; appendix elongate, 6–12 cm × 4–7 mm, thin, straight or slightly sigmoid, acute, terete or slightly dorso-ventrally compressed, slightly narrowing to the base, dirty pale greyish brownish, surface densely verruculate. Infructescence peduncle not elongating, fruit part consisting of 2 to 5 berries in one vertical line; fruit globose, ca 7 mm diam., shallowly but distinctly costate and verrucate, blackish with whitish spots.

    Habitat

    Deep shade, near base of rocky outcrop.

    Distribution

    Native to:

    Thailand

    Amorphophallus polyanthus Hett. & Sizemore appears in other Kew resources:

    First published in Blumea 46: 267 (2001)

    Accepted by

    • 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.

    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