Skip to main content
This species is accepted, and its native range is Bismarck Archipelago to Solomon Islands (Bougainville).
A specimen from Kew's Herbarium


CATE Araceae, 17 Dec 2011.

Primary and secondary lowland to upper hill forest, along streams and paths.
Papua New Guinea (New Britain and Bougainville).
A very distinct species notable for its overall large size, long peduncle and small stylar tops with prominently raised stigmas. Confusion with Rhaphidophora spuria is possible although the latter has larger stylar tops (1.6-2.4 x c. 2 mm diam.) and punctiform to slightly ellipsoid stigmas that are not prominently raised and do not dry glossy black, and ellipsoid seeds lacking a crest.
General Description
Very robust, pachycaul, homeophyllous liane to10 m; seedling stage not observed; pre-adult plants forming extensive terrestrial populations; LEAVES: adult shoot architecture comprised of elongated, clinging, physiognomically unbranched, densely leafy, flowering; stems smooth, with cataphylls and prophylls degrading into weak slightly fibrous patches and then falling, internodes to 4-13 x 1-3.5 cm; flagellate foraging stem not observed; clasping roots not observed; feeding roots arising singly from nodes, robust; leaves spiro-distichous; cataphylls and prophylls subcoriaceous, degrading to weakly fibrous patches, then falling; petiole deeply canaliculate, (6-)40-85 x 0.35-0.5 cm, smooth, apical and basal genicula very large though not especially prominent; petiolar sheath very prominent, extending from between 2/3 petiole length up to the apical geniculum, short-persistent, falling leaving thin scar; lamina entire, ovate to oblong-ovate, slightly oblique, 21.5-90 x 10.5-35 cm, thinly coriaceous to submembranous, drying pale yellow-brown to brown, base oblique, broadly rounded to shallowly and minutely cordate, more rarely subacute, apex rounded-acuminate with a small apical tubule; midrib very prominently raised and abaxially, ± impressed adaxially; primary venation pinnate, raised abaxially and adaxially; interprimaries parallel to primaries, much less prominent; secondary venation reticulate, hardly visible; INFLORESCENCE several together, each subtended by a prophyll and one or more chartaceous cataphylls, these soon degrading; peduncle terete, 11-25 x 0.3-2 cm; spathe slender canoe-shaped, stoutly attenuate-beaked, 16--24 x 2.5--3 cm, stiffly thin-fleshy, caducous, yellow; spadix slender cylindrical, sessile but long decurrent (to 2 cm) on peduncle/spathe insertion, 13-21 x 1-3 cm; stylar region, weakly rhombohexagonal to trapezoid, 1-1.2 x 1-1.3 mm, truncate; stigma punctiform, prominently raised, c. 0.25 mm diam., drying glossy black; anthers not exserted at male anthesis; INFRUCTESCENCE slender cylindrical, 14.5-17.5 x 2.5 cm; seed reniform, laterally compressed, conspicuously crested along dorsal side (i.e., the side opposed to the insertion of the funicle), c. 1.2 x 2.5 mm at maturity, c. 8-12 per fruit arranged on two parietal placentae.

Native to:

Bismarck Archipelago, Solomon Is.

Rhaphidophora jubata P.C.Boyce appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Nicolson, D.H. [1529], North Solomons K000291788 isotype

First published in Gard. Bull. Singapore 53: 124 (2001)

Accepted by

  • 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.


CATE Araceae

  • P.C. Boyce 2001. The Genus Rhaphidophora Hassk. (Araceae-Monsteroideae-Monstereae) in New Guinea, Australia and the Tropical Western Pacific Gardens Bulletin Singapore. 53: 75-183

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.

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.