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Araceae
Cyrtosperma gressittiorum A.Hay
SUMMARY
Herb to 70 cm high. Leaves with petiole to 60 cm, sheath papery, c. 15 cm long, spines sparse, straight, needle-like, to 3 mm long; petiole variegated green and white; lamina hastate-sagittate, sparsely armed below, c. 30 cm long; anterior lobe sub-equalling the posterior ones; posterior lobes slender, to 6 cm wide, their midribs naked in the sinus for c. 3 cm, lesser venation somewhat prominent below; costae of the anterior lobe arising near the sinus, curvinerved, running to the margin near the tip; peduncle similar to but exceeding the petiole, to 90 cm long. Spathe lanceolate, c. 7 cm long, hood-forming in the upper quarter, green, major venation parallel, distant, secondary venation reticulate; spadix orange, 4 cm long with a 5 mm stipe adnate to the spathe. Flowers tetramerous; anthers exserted from the tepals at male anthesis, apparently retracting afterwards; stigmas hardly exceeding the tepals; ovule solitary; fruit and seed unknown.