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A NEW BASE NUMBER IN THE GENUS LYGODIUM
Author(s) -
ROY S. K.,
MANTON I.
Publication year - 1965
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1965.tb05397.x
Subject(s) - phyletic gradualism , taxon , genus , biology , botany , zoology , evolutionary biology , genetics , phylogenetics , gene
S ummary Chromosome counts have been carried out on thirteen specimens of Lygodium , mostly of known wild origin from various parts of the oriental tropics. Five specimens represent taxa not previously investigated from any source. The results confirm some previous records, notably the presence in the genus of two base numbers (n = 29 and n = 30) and their multiples, but they add a new base number (n = 28) and multiples. Some phyletic and other implications of these findings are discussed.