Cerastium gibraltaricum Boiss.
Conservation status:
Endemic to Gibraltar.
Diagnostic description:
A loosely tufted, woody-based perennial. Stems much branched, to 30 cm. Leaves linear to linear-lanceolate, about 2 cm long, glandular-hairy, sticky. Flowers white, 2 to 2.5 cm across, in lax terminal clusters; petals 5, bilobed to one third. Sepals 6 to 8 mm long, with papery margins. Capsule 5 to 10 mm long. Seeds 1.5 to 2 mm long; reniform, tuberculate.
Distribution:
Local: Not very common. Found mainly on the north face of the Rock and Mediterranean Steps, with scattered plants elsewhere.
Ecology:
Flowers between (March) April, May and June.
Habitat:
Grows on stony ground and in limestone crevices.