Abstract
An equisetaceous plant with wheel-like nodal diaphragms, previously described
as Equisetum rotiferum Tenison-Woods, 1883, is common in the Marburg Sandstone
and Walloon Coal Measures of south-eastern Queensland. The species is now considered
to be synonymous with E. laterale Phillips, 1829.E. bryanii sp. nov. occurs
in the Walloon and Mulgildie Coal Measures. Both forms are described in detail and
can be closely compared with extant Equisetum. The internodal vascular bundles of
E. laterale contain xylem elements with annular, annular-helical, and reticulate
thickenings, annular types predominating. The cone of E. laterale is ovate and
terminal, consisting of whorled peltate sporangiophores; it contains numerous small,
globose, alete, scabrate to microrugulate spores.
Subject
Plant Science,Ecology, Evolution, Behavior and Systematics
Cited by
48 articles.
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