Sep lance-subulate, distinct to the base; cor funnelform, barely surpassing the cal, hairy in the throat; stamens included; anthers rotund; ovary half-inferior; style very short; stigma capitate; capsule somewhat flattened, loculicidal, the carpels eventually separating; seeds numerous, minute; diffusely branched annual with narrow lvs connected at base by a stipular membrane, the fls small, sessile, white, in leafy terminal cymes. Monospecific.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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