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See list of 3 species in this genus

References: Wiersema (1997b), Hellquist and Crow (1984).

  • 1a. Flowers 3–7.5 cm wide, with 20–40 stamens; stigmatic disk with 5–12 lines; leaf blades elliptic, (2–) 4–9 (–15) cm wide, with a wide sinus, mottled when young
  • 1b. Flowers 6–19 cm wide, with 40–100 stamens; stigmatic disk with 10–25 lines; leaf blades orbicular, (5–) 10–30 (–40) cm wide, with a narrow sinus, not mottled
    • 2a. Petals acute to narrow-rounded at the apex; abaxial surface of the sepals and leaf blades purple or sometimes green; inner filaments narrower than the anthers; seeds 1.5–2.5 mm long; branches of the rhizome not constricted at the base; petioles faintly, 
if at all, striped; flowers strongly fragrant
    • 2b. Petals broad-rounded at the apex; abaxial surface of the sepals and leaf blades green; all the filaments broader than the anthers; seeds 2.8–4.5 mm long; branches of the rhizome constricted at the base, breaking into tuber-like segments [Fig. 56]; petioles striped with brown-purple; flowers weakly or not at all fragrant

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 Show photos of:   Each photo represents one species in this genus.