Erect or creeping annuals or perennials. Leaves alternate, opposite or whorled, glabrous or glandular-pubescent. Flowers in panicles or racemes, occasionally solitary in axils; sepals 5, virtually free; corolla deeply 5-lobed, shorter than or exceeding calyx; staminodes absent; ovary superior. Capsule longitudinally dehiscent from the apex, circumsciss, or, in some species, irregularly dehiscent.
About 180 species, cosmopolitan, but mainly Northern Hemisphere; 8 species in Australia (at least 3 naturalised).
Anagallis has long been regarded as a close relation to Lysimachia. Molecular studies have supported this association, finding Anagallis, along with smaller genera Asterolinon, Glaux L., Pelletiera A.St.-Hil., and Trientalis L. to be nested within Lysimachia, and these are all now included in Lysimachia.