Skip to main content
This species is accepted, and its native range is Peninsula Thailand to Peninsula Malaysia, Borneo (Sarawak).
A specimen from Kew's Herbarium

[CATE]

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

General Description
Large, occasionally very large, moderately robust, semi-pachycaul homeophyllous liane to 10 m; seedling stage a non-skototropic shingling shoot; pre-adult plants rarely forming small terrestrial colonies of appressed shingling shoots; LEAVES: adult shoot architecture comprised of greatly elongated, clinging, physiognomically monopodial, leafy, non-flowering stems and short to moderately elaborated, free, sympodial, densely leafy, flowering stems; stems smooth, climbing stems rectangular in cross section, the angles winged, the surfaces between sulcate, the stem twisting to give a barley-sugar effect, free stems more or less terete to weakly four-angled in cross section, often branching extensively, growing to considerable lengths and then pendent under their own weight, green, later dull brown, without prophyll, cataphyll and petiolar sheath fibre but active apices coated with clear mucilage, internodes to 10 x 2 cm on adherent shoots, usually shorter and less stout on free shoots, separated by prominent slightly oblique leaf scars, older stems woody; flagellate foraging stems absent; clasping roots densely arising from the nodes and internodes of clinging stems, densely pubescent; feeding roots rather rare, adherent, pubescent; leaves weakly spiralled on adherent and proximal portions of free shoots, densely distichous distally on flowering shoots; cataphylls and prophylls membranous, very quickly drying and falling; petiole shallowly canaliculate to grooved adaxially, 4-7 x 0.2-0.3 cm, smooth, with a slight apical and somewhat prominent basal geniculum; petiolar sheath prominent, extending to and encircling the apical geniculum, very swiftly drying and falling to leave a continuous scar from the petiole base, around the top of the apical geniculum and back to the base; lamina entire, falcate-elliptic-lanceolate to falcate-oblong or falcate-oblanceolate, 4.5-25.5 x 1.5-5 cm, thickly coriaceous to almost fleshy, upper surfaces glossy, lower surfaces matte, base sub-ovate to acute or briefly decurrent, apex sub-acute with a prominent apiculate tubule, margins slightly reflexed, this becoming greatly accentuated in dried material; mid-rib barely raised abaxially, slightly sunken adaxially; primary venation pinnate, slightly raised abaxially and adaxially; interprimaries parallel to primaries, very slightly raised abaxially and adaxially; secondary and tertiary venation ± invisible in fresh material, barely visible in dried specimens; INFLORESCENCE solitary, subtended by a fully developed foliage leaf; peduncle compressed-cylindric-clavate, 1.7-2.5 x 0.2-0.3 cm; spathe cigar-shaped, stoutly short-beaked, 4-6.5 x 1-1.7 cm, thickly fleshy, dull green to dull yellow, swiftly falling at female receptivity; spadix cylindrical, sessile, inserted level on peduncle, 3.5-6 x 0.5-1.3 cm, dirty white; stylar region rather well developed, mostly rhombohexagonal, 0.8-1 x c.c. 1 mm, truncate; stigma punctiform, c.c. 0.3 mm diam.; anthers barely exserted at anthesis, pollen extruded from between ovaries; INFRUCTESCENCE not observed.
Distribution
Peninsular Malaysia (Negri Sembilan, Perak, Selangor) and southern peninsular Thailand.
Diagnostic
Leaf lamina thickly coriaceous to almost fleshy, falcate-elliptic-lanceolate to falcate-oblong or falcate-oblanceolate, 4.5-25.5 x 1.5-5 cm; margins slightly reflexed, this becoming greatly accentuated in dried material. The similar R. maingayi Hook.f. may be distinguished by the shoot apices covered with persistent untidy fibre derived from the degraded prophylls, cataphylls and petiolar sheaths.In the field the shoot apices distinguish R. montana , they are covered with persistent untidy fibre derived from degraded prophylls, cataphylls and petiolar sheaths. Confusion with R. montana is possible. Generally R. montana is a plant far larger in all its parts, especially in the larger inflorescences and longer spadix.

Native to:

Borneo, Malaya, Thailand

Rhaphidophora crassifolia Hook.f. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Aug 1, 2001 Kunstler, H. [8111], Peninsular Malaysia K000523780 Unknown type material

First published in Fl. Brit. India 6: 543 (1893)

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.
  • 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

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

Kew Backbone Distributions

  • 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.

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

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. 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 2021. 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