Cyrtosperma
(from kyrtos, curved, and sperma, a seed; the seeds are sometimes reniform). ORD. Aroideae (Araceae). A genus embracing about sixteen species of stove, perennial herbs, with tuberous or elongated rhizomes, inhabiting tropical Asia, Africa, and America. Flowers all fertile on an inappendiculate spadix; spathe ovate-lanceolate or oblong, convolute towards the base, at length opening, the lamina straight or twisted; spadix shorter than the spathe, sessile or stipitate, cylindrical or globose. Leaves hastate; petioles elongated, sheathing at base. The few species introduced require similar culture to that recommended for Alocasia (which see, on p. 50, Vol. I.). C. Johnstoni (Johnston's). This is now the correct name of the plant described on p. 50, Vol. I., as Alocasia Johnstoni.
C. Martveieffianum (Martveieff's). Probably identical with Lasia spinosa (which see).