White flowers, VIII–X with pale brown anthers; bright green foliage; height 21–25cm; spread 46–60cm.

Wild-collected; found by Mr & Mrs Maxwell in 1923 while on their honeymoon, collected on the Lizard Peninsula, Cornwall, England; introduced by Maxwell & Beale (Broadstone, Dorset) in 1925.

Named after the mythical land said to lie beneath the sea off the Cornish coast.