Skip to main content
This species is accepted, and its native range is New Guinea.
Rhaphidophora pachyphylla 751

[CATE]

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

Distribution
Indonesian Papua, Papua New Guinea. The scattered localities and few collections suggest a widespread but uncommon species.
Habitat
Lowland monsoon or rain forest
General Description
Moderate to rather large, somewhat robust, semi-leptocaul, homeophyllous neotenic liane to 5 m; seedling stage a non-skototropic shingling juvenile shoot; pre-adult plants forming small terrestrial colonies; LEAVES: adult shoot architecture comprised of clinging, physiognomically unbranched, mostly densely leafy, sterile stems and free, leafy flowering stems; stems rectangular-terete in cross-section, widest side prominently convex, smooth, mid-green, without prophyll, cataphyll and petiolar sheath fibre although flowering shoots occasionally with parchment-like remains, internodes to 3 x 1 cm, separated by rather prominent ± straight scars, older stems sub-woody; flagellate foraging stems absent; clasping roots arising sparsely from the internodes, pubescent; feeding roots not observed; leaves distichous, those on adherent shoots shingling, those on free shoots slightly spreading, all densely arranged; cataphylls and prophylls membranous, caducous; petiole deeply grooved, 1.5-4 x 0.15-0.2 cm, smooth, apical and basal genicula quite prominent; petiolar sheath prominent, membranous, ligulate, slightly unequal on one side, of short-duration, degrading to very weak fibres and soon falling; lamina narrowly ovate-elliptic, stiffly coriaceous, base acute to cuneate, apex acute with a short tubule; midrib prominently raised abaxially, slightly impressed adaxially; primary venation pinnate, slightly raised abaxially, somewhat impressed adaxially; interprimaries sub-parallel to primaries, slightly raised on both leaf surfaces; secondary venation weakly reticulate, slightly raised abaxially, ± flush adaxially; INFLORESCNCE solitary on short to somewhat elongated leafy shoots, subtended by a fully developed foliage leaf, and soon-degrading membranous prophyll; peduncle terete, 4-7 x 0.2-0.25 cm; spathe broadly canoe-shaped, obtuse to slightly pointed, 5-6.5 x 1.5-2.2 cm, stiffly fleshy, yellow, gaping at female anthesis and then caducous leaving a large scar at the base of the spadix; spadix narrowly cigar-shaped, long stipitate, inserted obliquely on stipe, 4-5.5 x 1.2-1.6 cm, yellow; stipe 6-10 x 2-2.4 mm; stylar region weakly developed, mostly irregularly rhombohexagonal, 1-1.2 x1-1.4 mm, truncate; stigma slightly raised, punctiform, c. 0.2-0.3 x 0.3-0.35 mm; anthers slightly exserted at male anthesis; INFRUCTESCENCE not seen.
Diagnostic
Long confused with Rhaphidophora hayi, R. pachyphylla differs in leaf shape, and form of the stigma. Additionally, R. pachyphylla lacks the disarticulating shoots unique to R. hayi, and never has foraging shoots.

Native to:

New Guinea

Rhaphidophora pachyphylla K.Krause appears in other Kew resources:

First published in Bot. Jahrb. Syst. 49: 92 (1912)

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.

Literature

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.
http://creativecommons.org/licenses/by-nc-sa/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

Kew Science Photographs
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/