Stellaria L.

Petals deeply notched or rarely absent Stellaria
Stems with a line of hairs down one side of each node. Flowers in terminal leafy cymes, the peduncles at fruiting becoming lateral in the forks of branches. Annual, prostrate to ascending herbs. Cosmop. garden weeds
Sepals more than 4 mm long with glandular hairs. Petals present. Leaves green, ovate, mostly 12–18 mm long, upper ones sessile, lower ones petiolate. Capsule the same length as sepals. Widespread. Weed. Introd. from Europe. Fl. winter–summer. Chickweed Stellaria media
Sepals less than 4 mm long with simple hairs. Petals absent. Leaves yellowish-green, ovate, mostly less than 7 mm long, usually petiolate. Capsule exceeding the sepals. Plants rarely glabrous with age. Widespread. Weed. Introd. from Europe. Fl. spring. Stellaria pallida