Agrobase Ireland
Thyme-leaved sandwort
Arenaria serpyllifolia

Name also: Thymeleaf Sandwort
Family: Pink Family – Caryophyllaceae
Growing form: Annual herb.
Height: 5–20 cm (2–8 in.). Stem ascending–erect, usually abundantly branched, short-haired.
Flower: Corolla regular (actinomorphic), white, under 1 cm (0.4 in.) broad; petals 5, entire, shorter than sepals. Sepals 5, tapered, 3-veined, short-haired. Stamens 10. Gynoecium syncarpous, with 3 styles. Flowers in a sparse corymb (sometimes solitary).
Leaves: Opposite, lowest unclearly stalked, upper almost stalkless. Blade triangularly ovate, tapered, with entire margins, finely haired, greyish green.
Fruit: Pear-shaped, oval-based, thick-walled, light brown, 6-valved, capsule same length as calyx.
Habitat: Rocky and hillside ridges, meadows, gravel patches, sandy banks, river banks, road and railway embankments, fallow fields, wasteland, yards.
Flowering time: June–August.

Effective on