Twelve species ofSibbaldia L. are recognised, including one new combination and one new record for India. Key to the species, correct nomenclature of taxa dealt with, their systematic account, range of distribution, both in India and outside are given and specimens examined cited.
Lygodium Sw. belongs to the monogeneric family Lygodiaceae Presl.s.s. and is comprised of about 40 species in the world flora. Out of these 10 species are from India.L. giganteum Tagawa and Iwat. andL. mearnsii Copel. are new records whileL. longifolium (Willd.) Sw.,L. circinnatum (Burm. f.) Sw.,L. polystachyum Wall. ex Moore andL. altum (Clarke) v.A.v.R. are poorly represented amongst the Indian collections in herbaria. A key is provided for diagnosing the species from India along with the correct nomenclature of each taxon.