Araceae Juss.

Rhaphidophora lobbii Schott

This species is accepted, and its native range is Peninsula Thailand to W. & Central Malesia.


CATE Araceae, 17 Dec 2011.

Lowland to hill dipterocarp forest on wet to inundated soils, peat swamp and fresh water swamp forest.
General Description
Small to moderate, somewhat slender, leptocaul, homeophyllous liane to 5 m; LEAVES: seedling leafy at germination and skototropic by alternating series of congested leafy and elongated leafless shoots; pre-adult plants forming diffuse terrestrial colonies; adult shoot architecture comprised of greatly elongated, clinging, physiognomically monopodial, leafy, non-flowering stems and long moderately elaborated, free, sympodial, densely leafy, flowering stems; stems puberulent-scabrid to asperous, especially on older growth, climbing stems weakly rectangular to ± terete in cross section, free stems ± terete in cross section, often branching extensively and growing to moderate lengths pendent under their own weight, dull brown, without prophyll, cataphyll and petiolar sheath fibre, internodes to 13 x 0.6 cm on adherent and free shoots, flowering shoots with much shorter internodes, separated by weak to rather prominent, slightly oblique leaf scars, older stems woody; flagellate foraging stems absent; clasping roots sparsely arising from the nodes and internodes of clinging stems, densely pubescent; feeding roots rather rare, sometimes adherent but often free, pubescent; leaves weakly spiralled and often sparsely arranged on adherent and proximal portions of free shoots, densely spirally-distichous distally on flowering shoots; cataphylls and prophylls membranous, very quickly drying and falling; petiole grooved adaxially, 4-9.5 x 0.2-0.3 cm, smooth, with a moderate apical and prominent basal geniculum; petiolar sheath slightly prominent, extending beyond the apical geniculum by two ligules, very swiftly drying and falling in strips to leave a continuous scar from the petiole base, around the top of the apical geniculum and back to the base; lamina entire, narrowly elliptic to elliptic-lanceolate to oblong or oblanceolate, 6-24 x 2-10 cm, very softly coriaceous, upper surfaces slightly glossy, lower surfaces pale satin-matte, drying markedly discolorous, dark brown above, pale brown below, base cuneate to acute or sub-ovate, briefly decurrent, apex acute to ovate-acuminate, with a prominent apiculate tubule; mid-rib slightly raised abaxially, slightly sunken adaxially; primary venation pinnate, slightly raised abaxially, prominent (dark veins against pale lamina) in dried material; interprimaries parallel to, but much less distinctive than, primaries, very slightly raised abaxially; secondary and tertiary venation ± invisible in fresh material, barely visible in dried specimens, reticulate; INFLORESCENCE solitary, subtended by a fully developed foliage leaf and a very quickly falling cataphyll; peduncle compressed-cylindric, 1.5-5 x 0.15-0.4 cm; spathe cigar-shaped, stoutly long-beaked, 3-5 x 0.4-1 cm, thickly fleshy, exterior minutely puberulent, dull green to yellowish, swiftly falling at female receptivity to leave a substantial, slightly oblique, scar; spadix slender cylindrical, sessile, inserted level on peduncle, 3-3.5 x 0.4-0.5 cm, dull yellow-white; stylar region rather well developed, mostly rhombohexagonal, 1.9-2.4 x c.c. 2 mm, truncate; stigma punctiform, c.c. 0.3 mm diam., prominent in dried material; anthers barely exserted at anthesis, pollen extruded from between ovaries; INFRUCTESCENCE oblong-cylindric, 2.5-4 x 1-1.2 cm.
Peninsular Malaysia (Kedah, Malacca, Pahang, Perak, Selangor, Terengganu), Singapore, southern Thailand, Sumatera, throughout Borneo extending to the Philippines (Palawan), and Sulawesi.

Native to:

Borneo, Jawa, Malaya, Philippines, Sulawesi, Sumatera, Thailand

Rhaphidophora lobbii Schott appears in other Kew resources:

First published in Prodr. Syst. Aroid.: 379 (1860)

Accepted by

  • Boyce, P.C., Sookchaloem, D., Hetterscheid, W.L.A., Gusman, G., Jacobsen, N., Idei, T. & Nguyen, V.D. (2012). Flora of Thailand 11(2): 101-325. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
  • 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.
  • Kurniawan, A., Adjie, B. & Boyce, P.C. (2011). Studies on the Araceae of Sulawesi I: New taxa of Schismatoglottis and Homalomena, and a preliminary checklist and keys for Sulawesi Acta Phytotaxonomica et Geobotanica 61: 40-50.
  • Mansor, M., Boyce, P.C., Othman, A.S. & Sulaiman, B. (2012). The Araceae of peninsular Malaysia: 1-146. Penerbit Universiti Sains Malaysia.


CATE Araceae

  • P.C. Boyce 1999. The Genus Rhaphidophora Hassk. (Araceae-Monsteroideae-Monstereae) in Peninsular Malaysia, and Singapore Gardens Bulletin Singapore. 51: 183-256

  • 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.

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