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Araceae
Stenospermation longispadix Croat
SUMMARY
Terrestrial, to 2 m tall; internodes to 6 cm long, 3-3.5 cm diam., pale green, semiglossy; petioles 20-30 cm long (averaging 26.1 cm), 9-14 mm diam., thicker than broad, narrowly and sharply sulcate adaxially, sheathed to geniculum or occasionally to within 3 cm of geniculum (rarely to 7 cm from geniculum), drying light brown, matte, finely several-ribbed; blades coriaceous, narrowly elliptic to oblong-elliptic or oblanceolate-elliptic, sub-rounded to obtuse then shortly and abruptly acute and apiculate to short-acuminate at apex, acute and somewhat attenuated at base, 26-44 cm long, 12-19 cm wide (somewhat narrower, to 10 cm wide on the uppermost leaves associated with the inflorescence, averaging 37.3 x 16 cm), 2.0-2.4 times longer than broad, 1.3-1.8 times longer than the petioles, inequilateral, one side usually 4-8(-12) mm wide; upper surface dark green and matte; lower surface pale, yellow-green and matte; margin usually yellowish; midrib deeply sunken and moderately paler along margins above, much thicker than broad, narrowly rounded and moderately paler below; primary lateral veins very weakly pleated-raised above, darker than surface and moderately visible below; upper surface drying with the surface moderately flat and smooth or conspicuously irregular with the veins forming depressions and with the minor veins weakly raised and with the intervening area somewhat granular, sometimes conspicuously wrinkled or folded, usually sparsely and inconspicuously pale short-lineate; lower surface drying moderately smooth with the minor veins bluntly raised, the intervening areas densely whitish speckled, the larger of these consisting of short lines perpendicular to the veins. INFLORESCENCES erect; peduncle (31-) 41-43 cm long, 5-8 mm diam. at middle; spathe pale green, 15-26 cm long (with spathe furled), naviculiform at anthesis, deciduous soon after anthesis; spadix white at anthesis, greenish white post-anthesis, 19-25 cm long. Flowers 5-7 per primary spiral, 2.2-2.8 mm long, 2.0-2.9 mm wide. INFRUCTESCENCES with fruiting spadix 19-27 cm long, 25-30 mm diam., cylindroid, sessile; mature berries white.