The phase change of the apical meristem of the short shoots from vegetative to reproductive stands against Ahrendt's (1961) interpretation that each foliose leaf in these shoots represents a leaflet of a palmately
5B); apical cells 5-12, palmately
arranged or in a nodding cluster (Fig.
lobed Proteaceae leaf fossils from the Middle Eocene of South Australia.
Leaves alternate to rarely opposite, rosulate, clustered at the branch apices to clustered in the axils of the old leaves; petiolate, sessile to sheathing at the base; blades entire, lyrate, pinnatisect to pinnately compound, unarmed to spiny, pinnately, palmately
to three-veined, rarely parallel-veined, glabrous to pubescent.
Leaves clustered on brachyblasts; subsessile; blades ovate-elliptic, palmately
, pinnately to three-veined, margin entire, slightly pubescent on both surfaces.
Leaves glabrous to pubescent; basal leaves rosulate; petiolate, sessile to clasping; blades linear, lanceolate, ovate to orbicular, palmately
to pinnately veined, margin entire, lyrate to pinnatisect; upper leaves alternate, reduced; clasping.
Referring to the above papers, Foster (1950) has expressed the view : "But the 'typical' venation of the leaves of angiosperms is 'closed' and it seems highly doubtful to the writer that the 'forked' veins which frequently occur in pinnately and palmately
veined leaves, should be interpreted as 'traces of ancient dichotomies'".
applicable only to palmately
veined leaves, or characters describing