1. Family: Araceae Juss.
    1. Genus: Apoballis Schott
      1. Apoballis rupestris (Zoll. & Moritzi) S.Y.Wong & P.C.Boyce

        This species is accepted, and its native range is Sumatera to Lesser Sunda Islands.

    [CATE]

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

    Habitat
    Terrestrial, usually near streams or waterfalls or on very moist slopes in lowland and lower montane rainforest, often forming abundant stands,
    General Description
    Moderately to very robust herb to c. 1 m high. Stem erect to decumbent, up to 2 m long (usually less), c. 3–10 cm diam. with internodes c. 1–5 cm long. Leaves several together; petiole green to brownish red, c. 18–90 cm long, sheathing in the lower ⅓–½; wings of sheath fully attached, tapering, marcescent and crumbling; blade ovato-sagittate, sometimes slightly cordate-sagittate, green to mid-green adaxially, dull yellowish green abaxially, thinly leathery, c. 23–40 cm long × c. 16-28 cm wide, the base divided with posterior lobes acute to rounded, c. 5-12 cm long, the apex acuminate; midrib abaxially prominent, with c. 15–24 primary lateral veins on each side, sometimes branching, prominent abaxially, sunken adaxially, diverging from the midrib at 50°–70°, alternating with lesser interprimary veins; secondary and tertiary veins obscure; posterior costae absent. Inflorescences 4–6 together, subtended by dried cataphylls; peduncle yellowish green, sometimes tinged red at the base, c. 10 cm long. Spathe c. 17 cm long, slightly curved, constricted at the level of sterile zone of the spadix; lower spathe c. 6 cm long, c. 2.2 cm diam., narrowly ovoid, yellowish green; the limb narrowly lanceolate, pale yellow, c. 11 cm long, c. 1 cm diam., open only slightly between male zone and lower part of appendix during anthesis, withering. Spadix subequalling the spathe, sessile; female zone light green, c. 4.5 cm long, c. 1.2 cm diam. at the base, not or barely adnate to the spathe; ovary subcylindric, c. 2–2.5 mm long, c. 0.75 mm diam.; stigma raised on a very short style, rounded (button-like); interpistillar staminodes scattered among the pistils, dirty white, taller than the pistils, a few concentrated at the base and more crowded between female zone and sterile inyterstice; sterile interstice almost naked, c. 1–2 cm long, the base of staminodes sometimes somewhat sunken into spadix, crowded at the base then scattered toward the apex; male zone yellowish-ivory, c. 3.5 cm long, c. 0.8 cm diam., cylindric; anthers c. 0.5 mm across, dumbbell-shaped; appendix subequalling or longer than male zone, c. 5 cm long, tapering, creamy, c. 0.5–0.8 cm diam. at the base; staminodes of appendix irregularly hexagonal. Fruiting spathe urceolate, to 5 cm long.
    Distribution
    Malesia: Sumatera, West to Central Java, Nusa Tenggara (Flores).
    [CATE]

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

    Distribution

    Malesia: Sumatera, West to Central Java, Nusa Tenggara (Flores).

    General Description

    Moderately to very robust herb to c. 1 m high. Stem erect to decumbent, up to 2 m long (usually less), c. 3-10 cm diam. with internodes c. 1-5 cm long. Leaves several together; petiole green to brownish red, c. 18-90 cm long, sheathing in the lower ?-1/2; wings of sheath fully attached, tapering, marcescent and crumbling; blade ovato-sagittate, sometimes slightly cordate-sagittate, green to mid-green adaxially, dull yellowish green abaxially, thinly leathery, c. 23-40 cm long × c. 16-28 cm wide, the base divided with posterior lobes acute to rounded, c. 5-12 cm long, the apex acuminate; midrib abaxially prominent, with c. 15-24 primary lateral veins on each side, sometimes branching, prominent abaxially, sunken adaxially, diverging from the midrib at 50°-70°, alternating with lesser interprimary veins; secondary and tertiary veins obscure; posterior costae absent. Inflorescences 4-6 together, subtended by dried cataphylls; peduncle yellowish green, sometimes tinged red at the base, c. 10 cm long. Spathe c. 17 cm long, slightly curved, constricted at the level of sterile zone of the spadix; lower spathe c. 6 cm long, c. 2.2 cm diam., narrowly ovoid, yellowish green; the limb narrowly lanceolate, pale yellow, c. 11 cm long, c. 1 cm diam., open only slightly between male zone and lower part of appendix during anthesis, withering. Spadix subequalling the spathe, sessile; female zone light green, c. 4.5 cm long, c. 1.2 cm diam. at the base, not or barely adnate to the spathe; ovary subcylindric, c. 2-2.5 mm long, c. 0.75 mm diam.; stigma raised on a very short style, rounded (button-like); interpistillar staminodes scattered among the pistils, dirty white, taller than the pistils, a few concentrated at the base and more crowded between female zone and sterile inyterstice; sterile interstice almost naked, c. 1-2 cm long, the base of staminodes sometimes somewhat sunken into spadix, crowded at the base then scattered toward the apex; male zone yellowish-ivory, c. 3.5 cm long, c. 0.8 cm diam., cylindric; anthers c. 0.5 mm across, dumbbell-shaped; appendix subequalling or longer than male zone, c. 5 cm long, tapering, creamy, c. 0.5-0.8 cm diam. at the base; staminodes of appendix irregularly hexagonal. Fruiting spathe urceolate, to 5 cm long.

    Habitat

    Terrestrial, usually near streams or waterfalls or on very moist slopes in lowland and lower montane rainforest, often forming abundant stands, c. 200-1400 m alt.

    Distribution

    Native to:

    Jawa, Lesser Sunda Is., Sumatera

    Apoballis rupestris (Zoll. & Moritzi) S.Y.Wong & P.C.Boyce appears in other Kew resources:

    First published in Bot. Stud. (Taipei) 51: 254 (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.

    Literature

    CATE Araceae
    • Hay, A. & Yuzammi 2000. Schismatoglottideae (Araceae) in Malesia: 1. Schismatoglottis. Telopea. 9 (1): 1-177

    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