1. Lygodium Swartz, J. Bot. (Schrader). 1800(2): 7, 106. 1801.
Climbing ferns [Greek lygodes, flexible, in reference to the twining rachis]
Clifton E. Nauman
Plants terrestrial. Stems branched, slender. Leaves often more than several meters, 2-pinnate or more divided, climbing by means of twining rachis; fertile pinnae borne toward apex of fertile leaves. Blades of short, alternate primary pinnae. Pinnules ± entire to palmately or pinnately lobed; fertile and sterile pinnae similar or fertile pinnae greatly contracted.
Species ca. 40 (3 in the flora): nearly worldwide, mostly tropical regions, a few species in temperate regions, North America, Asia in Japan, s Africa, Pacific Islands in New Zealand.
Beckner, J. 1968. Lygodium microphyllum, another fern escaped in Florida. Amer. Fern J. 58: 93-94. Nauman, C. E. 1987. Schizaeaceae in Florida. Sida 12: 69-74. Nauman, C. E. and D. F. Austin. 1978. Spread of the exotic fern Lygodium microphyllum in Florida. Amer. Fern J. 68: 65-66.
(Key to species of Lygodium )