Japan Flora: Nearly glabrous annual herb resembling the preceding species, but the spathe longer, the margins not connate in front; stem creeping, ascending above, branching below; leaves lanceolate to broadly lanceolate, 4-6 cm. long, 1-2 cm. wide, gradually acute to acuminate; spathe broad, rounded or shallowly cordate at base, gradually tapering above to a rather acute apex, 2-3 cm. long, 1.5-2 cm. wide when unfolded, glabrous; flowers blue, small; capsule 3-locu- lar, 5-seeded; seeds elevate-reticulate. Aug.-Oct.

Reported to occur in Kyushu (Yakushima). Ryukyus (Amami-Oshima and southw.), Formosa; widely distributed in the Tropics.