Open AccessRelationships among Tasmanian Tertiary Nothofagus (Nothofagaceae) populations
Author(s) -
SCRIVEN LEONIE J.,
HILL ROBERT S.
Publication year - 1996
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/j.1095-8339.1996.tb00761.x
Subject(s) - nothofagus , subgenus , biology , lobata , botany , fagaceae , ecology , taxonomy (biology) , medicine , alternative medicine , pathology , pueraria
Three leaf and two cupule forms of Nothofagus from the Early Oligocene deposit at Lea River are assigned to the previously described species Nothofagus tasmanica, N. lobata, N. gunnii, N glandularis and N. bulbosa. A single leaf specimen is possibly referable to Nothofagus subgenus Brassospora. Nothofagus microphylla , previously described from Monpeelyata, is separated into two species. These two species are N. microphylla and a new deciduous species named Nothojagus martinii. N. murophylla is transferred from the Nothofagus subgenus Lophozonia to subgenus Nothofagus , based upon cuticular characteristics. Nothw bulbosa and Nothojiis gunnii are also present at Monpeelyata. It is proposed that both N. lobata and N. microphylla have heterophyllous shoots and thus two leaf morphologies. Evolutionary and environmental relationships between Nothofagus species at Lea River, Monpeelyata and Little Rapid River are discussed. Large scale disturbance and increased seasonality are predicted to have caused the extinction of Nothofqus subgenus Nothofagus in Australia.