Pieris nana, Andromeda nana). Mat-forming, spreading underground, to 5cm tall by 20-30cm across. Leaves 5-8mm long, 3-4mm wide, oblong or oval, mainly in threes towards the stem tips, dark green, sometimes bronzy-red in winter, recurved at the margins. Short racemes each bear several whorls of up to three fragrant, white flowers 3-4mm long and much constricted at the mouth. Sepals five, lanceolate to ovate, up to 5mm long, red or green. High alpine boulders and cliffs, not uncommon in the mountains of Japan. A.n. 'Redshank' is distinct in having flower stems, bracts and calyces deep crimson.