1. Family: Araceae Juss.
    1. Genus: Apoballis Schott
      1. Apoballis javanica (Engl.) S.Y.Wong & P.C.Boyce

        This species is accepted, and its native range is Jawa.

    [CATE]

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

    Distribution
    Malesia: endemic to and widespread in Java.
    Diagnostic
    In these respects S. javanica resembles Sumateran S. ovata, differing in the more conspicuously sagittate and more membranous leaves, the larger number of primary lateral veins, glabrous internodes and more slender, elongate inflorescence.
    Habitat
    Terrestrial in secondary forest,
    General Description
    Small herb c. 30 cm tall. Stem repent to creeping, c. 1 cm diam., with internodes to c. 2.5 cm long. Leaves several together; petiole slender, c. 18–36 cm long, green to dark purple, sheathing in the lower ⅓–¼; wings of sheath fully attached, tapering, marcescent; blade (narrowly) ovate, shallowly sagittate, dull dark green adaxially, light green abaxially, c. 12–24 cm long × c. 6–12 cm wide, the base more or less cordate with rounded posterior lobes c. 2–4 cm long, the apex acuminate for c. 1–1.5 cm; primary lateral veins c. 8–13 on each side of the midrib, slightly raised abaxially, somewhat sunken adaxially, diverging from the midrib at 50–60°, irregularly alternating with interprimary veins; submarginal veins c. 1 mm from the margin; secondary veins parallel to primary venation; tertiary venation forming an obscure tessellate reticulum. Inflorescences mostly in pairs; peduncle c. 4–11 cm long. Spathe yellowish-green, c. 7 cm long, constricted at the level of sterile zone of the spadix; lower spathe ovoid, c. 3 cm long, c. 2 cm wide, yellowish with darker green striation; limb yellowish-green, c. 4 cm long, c. 1 cm wide, gaping only slightly at the level of male zone to base of appendix of the spadix during anthesis, withering. Spadix sessile, free from the spathe, slightly curved, c. 5 cm long, shorter than spathe; female zone greenish, c. 1–1.5 cm long, c. 0.8 cm wide; ovary light green, ovoid-cylindric, 1.5–2 mm long, 0.5 mm diam.; stigma sessile, whitish, button-like; interpistillar staminodes 1 whorl at the base of female zone, taller than pistils, sometimes one or two amongst ovaries and crowded distally; sterile interstice c. 1 cm long, c. 0.6 cm diam., with a few staminodes, almost naked; male zone yellow, c. 2 cm long, c. 0.7 cm diam.; stamens more or less rectangular from above, distorting on dehiscence, 1.5 mm long, 0.5 mm diam., sunken-topped; thecae opening through apical pores; appendix white, c. 1 cm long, shorter than male zone, tapering toward the apex; staminodes of appendix flat-topped, irregularly polygonal. Fruit unknown.
    [CATE]

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

    Distribution

    Malesia: endemic to and widespread in Java.

    General Description

    Small herb c. 30 cm tall. Stem repent to creeping, c. 1 cm diam., with internodes to c. 2.5 cm long. Leaves several together; petiole slender, c. 18-36 cm long, green to dark purple, sheathing in the lower ?-1/4; wings of sheath fully attached, tapering, marcescent; blade (narrowly) ovate, shallowly sagittate, dull dark green adaxially, light green abaxially, c. 12-24 cm long × c. 6-12 cm wide, the base more or less cordate with rounded posterior lobes c. 2-4 cm long, the apex acuminate for c. 1-1.5 cm; primary lateral veins c. 8-13 on each side of the midrib, slightly raised abaxially, somewhat sunken adaxially, diverging from the midrib at 50-60°, irregularly alternating with interprimary veins; submarginal veins c. 1 mm from the margin; secondary veins parallel to primary venation; tertiary venation forming an obscure tessellate reticulum. Inflorescences mostly in pairs; peduncle c. 4-11 cm long. Spathe yellowish-green, c. 7 cm long, constricted at the level of sterile zone of the spadix; lower spathe ovoid, c. 3 cm long, c. 2 cm wide, yellowish with darker green striation; limb yellowish-green, c. 4 cm long, c. 1 cm wide, gaping only slightly at the level of male zone to base of appendix of the spadix during anthesis, withering. Spadix sessile, free from the spathe, slightly curved, c. 5 cm long, shorter than spathe; female zone greenish, c. 1-1.5 cm long, c. 0.8 cm wide; ovary light green, ovoid-cylindric, 1.5-2 mm long, 0.5 mm diam.; stigma sessile, whitish, button-like; interpistillar staminodes 1 whorl at the base of female zone, taller than pistils, sometimes one or two amongst ovaries and crowded distally; sterile interstice c. 1 cm long, c. 0.6 cm diam., with a few staminodes, almost naked; male zone yellow, c. 2 cm long, c. 0.7 cm diam.; stamens more or less rectangular from above, distorting on dehiscence, 1.5 mm long, 0.5 mm diam., sunken-topped; thecae opening through apical pores; appendix white, c. 1 cm long, shorter than male zone, tapering toward the apex; staminodes of appendix flat-topped, irregularly polygonal. Fruit unknown.

    Habitat

    Terrestrial in secondary forest, at c. 150-1300 m altitude.

    Distribution

    Apoballis javanica (Engl.) S.Y.Wong & P.C.Boyce appears in other Kew resources:

    First published in Bot. Stud. (Taipei) 51: 253 (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