Molinia caerulea subsp. caerulea 'Carmarthen' (v)

Compact, clump-forming deciduous grass about 45-60cm tall, with narrow, linear, bright green leaves, striped creamy-yellow. Slender airy plumes of tiny dark purple flowers, on yellow-tinted arching stems, are held high above the foliage from summer to autumn, then turn orange-yellow by late autumn