Gymnosperms with extra-ovular capture and germination are known only from a small number of conifers, such as Araucariaceae
, Saxegothea (Podocarpaceae), and some Pinaceae, e.
In vitro propagation of Araucaria cunninghamii and other species of the Araucariaceae
via axillary meristems, Aust.
Non-saceate, in Araucariaceae, the grains large, non-sculptured and, in the consistent absence of a pollination drop, clearly not functioning hydrodynamically.
In Clade III pollen in Araucariaceae sinks, but remains intact.
In Araucariaceae all genera have robust seed cones, with each cone scale supporting a single ovule.
Many taxa found in the paleoflora, such as Akania, Malvaceae, and Lauraceae leaves and Araucariaceae
cone scales (Berry, 1937; Iglesias, 2007) are associated with thermophillic families.
The component plants of this group included the fossil examples of Araucariaceae
, Podocarpaceae, Cupressaceae, Akania (Akaniaceae), Casuarinaceae, Nothofagus (Nothofagaceae) and Eucalyptus (Myrtaceae) discussed by Hill and Carpenter (1991).
represented by Podocarpaceae, Araucariaceae, Cunionaceae, and
Podocarpaceae, Araucariaceae, Proteaceae (Beauprea), and megathermal
mesothermal families such as Podocarpaceae, Araucariaceae, Myrtaceae,
Group 2 Conifers: Araucariaceae, Cephalotaxaceae, Pinaceae, Podocarpaceae
The Araucariaceae is included in group 2 because its linkage with group 1 Cunninghamia and Cryptomeria of is inconsistent with phylogenetic studies of modern conifers (Brunsfeld et al.
The microsporophylls within this compact structure are peltate or apically thickened, a distinctive feature of the Taxaceae and the Cephalotaxaceae but also present in the Araucariaceae
Some palynological observations of Taxaceae, Cupressaceae and Araucariaceae
The same applies to ruminate storage tissues of gymnospermous seeds, as reported for Araucariaceae
(Coulter & Chamberlain, 1910), Gnetaceae (Schnarf, 1933), Phyllocladaceae (Coulter & Chamberlain, 1910), Taxaceae (Oliver, 1902; Coulter & Land, 1905; Lotsy, 1911), and, less pronounced, Cupressaceae, Ephedraceae, and Cephalotaxaceae (Tamamshjan, 1951).