Caesia R.Br.
Plants usually less than 20 cm high. Leaves 2 mm or less wide. Inflorescence branches spreading. Perianth less than 5 mm long, mostly white, sometimes blue or purple. Uncommon. Moist sites. Endangered. Fl. spring–summer Caesia parvifloraminor
Plants usually more than 20 cm high. Leaves up to 8 mm wide. Inflorescence branches ascending. Perianth up to 8 mm long, white to blue