Family:
Araceae Juss.

Homalomena asmae Baharuddin & P.C.Boyce

This species is accepted, and its native range is Peninsula Malaysia (Perak).

[CATE]

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

Ecology

On hilly area at the entrance of Sok River, Banding Dam, highland forest of Temenggor (3-10 m above water level) Forest Reserve, Grik, Perak.

General Description

Small, clumping evergreen, slightly aromatic (ocimene?) herbs to 35 cm tall. Stem hypogeal, later erect and epigeal, leafy, oldest parts naked, later in oldest plants somewhat creeping with the active shoot ascending, rooting from the nodes and from through the petiole bases. Leaves 8-12 together; petioles ascending to slightly spreading, up to 20 cm long, sheathing for ca. 1/2 their length, portion above the petiolar sheath D-shaped in cross section, the dorsal edges raised, and the petiole thus slightly canaliculate, matte by the presence of microscopic puberulence, mid-dark green with very obscure dark, broken longitudinal striae, especially basally; petiolar sheath conspicuous, margins spreading, sheath this open, margins persistent, margins minutely hyaline; lamina 11-12 × 5-6 cm; ovato-lanceolate to elliptico-lanceolate, cuneate  to obtuse basally, and very minutely peltate adaxially on the petiole insertion, apex acute to rather abruptly acuminate for ca. 1 cm, then stiffly tubular-mucronate for ca. 2 mm, semi-glossy medium to dark green adaxially, matte paler green with conspicuous darker pellucid striate interprimary venation abaxially, the lamina somewhat irregularly bullate between the primary veins; midrib conspicuous, impressed adaxially, rounded-raised abaxially, especially basally; primary lateral veins 4-6 per side, impressed adaxially, slightly raised abaxially; interprimary veins of two types, one type, alternating with primaries and much less conspicuous, the second type comprising conspicuous pellucid darker veins, these very numerous and sometimes branching just after they exit the midrib; secondary and tertiary venation invisible. Inflorescences up to 8 together, produced sequentially in a simple synflorescence, smelling weakly of terpenes at anthesis; peduncle very slender, up to 5 cm × 1.5 mm, except for the insertion of the spathe where ca. 3 mm diam., pale green, initially erect, later spreading; spathe partially opening by inflation at anthesis, broadly ovate-ellipsoid, not constricted but lower part at insertion on spadix conspicuously narrower and coinciding with the marked oblique insertion of the spadix insertion on the peduncle, ca. 3 × 1.2 × 1.5 deep cm at anthesis, tipped with a rostrate mucro 3 mm long, spathe pale to medium green, exterior glossy, interior paler green, glossy. Spadix ca. 2/3 length of the spathe, ca. 1.4 cm long, obliquely inserted on the peduncle, sessile or weakly stipitate, with the stipe virtually adnate to the spathe/peduncle insertion; female flower zone ca. 1/2 the length of the spadix, 0.8 × 0.5 cm; pistils somewhat loosely arranged, weakly globose cylindric, 1 × 0.5 mm, very pale green, 2-locular; style very short, slightly narrower than the ovary; stigma wider than the style, weakly umbonate-capitate, pale green, producing a conspicuous stigmatic droplet at female anthesis; placenta 2 per ovary, parietal to very slightly basal; interpistillar staminodes ellipsoid-clavate on a very slender stipe, ca. 1/2 or less the height of the associated pistil, dirty white; male flower zone contiguous with the female zone, ca. 1 × 0.9 cm; globose to ovoid, ivory; male flowers 2-staminate, stamens each with a single anther; globose, connective deeply impressed, leaving a deep cleft between each stamen; thecae opening fully by a large sloping slit. Infructescence with spathe persistent, initially erect, later somewhat declinate by flexing of the thickened peduncle; spathe turning deep green, later yellow-green and then dirty pale orange as fruit ripen, abscising at the insertion on the peduncle, with the spathe tearing upwards into irregular strips to reveal the ripe fruit; fruit oblong-globose, ripening pale orange, smelling weakly of decomposing pineapple; seeds ellipsoid, ca. 1.5 × 0.7 mm, minutely longitudinally ridged, pale brown.

Native to:

Malaya

Homalomena asmae Baharuddin & P.C.Boyce appears in other Kew resources:

First published in Acta Phytotax. Geobot. 60: 163 (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.
  • Mansor, M., Boyce, P.C., Othman, A.S. & Sulaiman, B. (2012). The Araceae of peninsular Malaysia: 1-146. Penerbit Universiti Sains Malaysia.

Literature

CATE Araceae

  • Sulaiman, B. & C.Boyce, P. Studies on Homalomeneae (Araceae) of Peninsular Malaysia I: Homalomena asmae, a New Species from Perak. Acta Phytotaxonomica et Geobotanica. [Shokubutsu bunrui chiri.] 60, 166 (2010).

Kew Backbone Distributions

  • Mansor, M., Boyce, P.C., Othman, A.S. & Sulaiman, B. (2012). The Araceae of peninsular Malaysia: 1-146. Penerbit Universiti Sains Malaysia.

  • 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 2022. 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 2022. 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