leaves (unknown); corolla thrice or four times as long as the sharply 4-cleft calyx, its segments broadly oblong, very blunt or truncate; stamens as long as the tube of the corolla. Of this very remarkable plant a portion of a denuded branch, and part of a dense, probably thyrsoid, inflorescence exist in Herb. Sonder. The internodes are scarcely an inch long, and there are 4 cicatrices, indicating whorled leaves, at each node. Calyx 3 lines long. Corolla uncial, bright red, its lobes almost square, 2 1/2 lines long.