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Araceae
Rhaphidophora megastigma Engl.
SUMMARY
Robust homeophyllous liane to unknown ultimate height; seedling stage and pre-adult plants not observed; LEAVES: adult shoot comprised of greatly elongated, clinging, physiognomically monopodial, leaf, non-flowering stems and long, free, sympodial, leafy flowering shoots; stems smooth, subterete, internodes 1-6.5 x 0.7-1 cm, separated by weakly defined leaf scars; clasping roots c. 2 mm diam., minutely pubescent; feeding roots not observed; petiole narrowly but deeply channelled adaxially, 10-18 cm x c. 2 mm, basal and apical geniculi prominent; petiolar sheath rather prominent, extending 3.5-4 cm along petiole, soon falling to leave a prominent scar; lamina oblanceolate to narrowly oblong-elliptic, 15-30 x 5-6.5 cm, coriaceous and rather distinctly discolorous in dried material, apex acute to very briefly attenuate, base briefly decurrent; midrib prominently raised abaxially, slightly raised adaxially; primary lateral veins very faint, barely discernible; peduncle slightly compressed cylindrical, 2.5--3 x 0.25 cm; INFLORESCENCE: spathe ovate-boat-shaped, 4.5-6 x 2-2.5 cm, apex attenuate, falling at anthesis; spadix sessile, cylindrical, 4-4.5 x c. 1 cm; stylar region c. 1.25 x 2 mm, stigma ± ovoid, 1 mm diam, ± flush with the style, the middle excavated, the edges prominently raised; anthers barely exserted at anthesis; INFRUCTESCENCE unknown.