3a-e, h, j, k) but is often well concealed in a form of incipient angiospermy within cone scales, as in Pinaceae, Taxodiaceae and Sciadopityaceae, even though the scales must gape at an early stage so as to provide pollen access to the enclosed ovules (Fig.
Sciadopityaceae, Cupressaceae--including Taxodiaceae, Taxaceae and Cephalotaxaceae; all with the same distinctive hydrodynamic response described below (Fig.
In Sciadopityaceae and most of the traditional Taxodiaceae (Farjon & Garcia, 2003; Takaso & Tomlinson, 1989, 1990, 1991, 1992), an ovuliferous scale bearing numerous ovules can be recognized, although they are partly concealed even at the time of pollination (Fig.
Affinities of modern taxa relative to one another are inferred from these studies, and important strides have been made in assessing the interrelationships of the Cupressaceae, Sciadopityaceae, and Taxodiaceae.
Group 1 Conifers: Cupressaceae, Sciadopityaceae, Taxodiaceae