Herbs annual. Stems slender, diffuse, sparsely short strigose or subglabrous. Leaves alternate, ovate-oblong to spatulate. Pedicel thin. Flowers solitary, axillary. Calyx 5-parted, slightly enlarged in fruit, spreading. Corolla rotate-campanulate; throat appendages 5; lobes of limb spreading, 5. Stamens inserted in corolla tube, included. Ovary 4-parted. Style not exserted; stigma subcapitate. Gynobase somewhat convex. Nutlets 4, narrowly ovoid, with glochids, abaxially convex, with some glochids confluent at base to form a cupular or crownlike emergence; attachment scar adaxially.
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