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Style-arms spreading, shorter than or exceeding the calyx-lobes; style-bases separate to the disk or shortly above it.
Annual herbs or suffrutices, branched and erect, glabrous or pubescent with multicellular, often gland-tipped hairs.
Inflorescences erect, sessile to subsessile or pedunculate; flowers sessile to subsessile or pedicellate.
Leaves sessile to subsessile, ovate to linear, midrib apparent but lateral veins obscure.
Filaments with or without a widened membranous area or scale-like appendage at the base.
Capsule subglobose or obovoid, all floral parts (except anthers) persistent.
With opposite exstipulate ovate to linear leaves, often glandular
Ovary inferior, 1-celled, with 2-pendulous many-ovuled placentas
Calyx-tube campanulate to subglobose, often distinctly 5-veined.
Flowers paired, axillary, subsessile or pedunclate
Petals 5, scarcely exceeding the sepals
Capsule dehiscing at the apex.
Characters of the family.
Sepals 5, valvate
Stamens 5
Herbs
