Adiantum pedatum (North American maidenhair), 12 to 18 in., a graceful plant and long familiar to British gardeners; perhaps the most beautiful of all hardy ferns. One of the first American plants to be introduced into the British Isles, having been discovered by John Tradescant in 1637. The young, delicate, light green fronds appear very early in the spring and are carried on slender chestnut-brown stems arising from a slowly creeping rootstock.
A.p. Japonicum, 3 ft., from Japan, is distinguished by its rosy-pink fronds and stems in the spring.
A.p. Klondyke, about 1-1/2 ft., even more beautiful than the type, is named after the district of its origin. Has umbrellalike fronds of delicate lacy texture, poised on slender, ebony-black stems.