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Araceae
Cyrtosperma johnstonii (N.E.Br.) N.E.Br.
SUMMARY
Gigantic suckering herb to c. 3 m tall, usually with one crown strongly dominant but eventually forming a clump of large crowns. Leaves several together, hastate to sagittate; petioles to 2.5 m long, irregularly and obliquely mottled white, green brown and pink, heavily armed with the spines coalescing into oblique combs; costae bright pink in young specimens, later with the laminas blotched reddish brown beneath and the costae green to brown; posterior lobes somewhat exceeding the anterior, to c. 70 cm long; peduncle similar to but shorter than the petioles. Spathe deeply and narrowly boat-shaped, 9-c. 40 cm long, rather abruptly more deeply and narrowly concave in the upper portion, erect, dark purple outside, pale dirty yellowish green within; spadix 7-25 cm long, with a short free stipe, somewhat glaucous; flowers hexamerous; anthers exserted at male anthesis; ovary 1- to 2-ovulate; fruit and seed unknown.