Figure 1From: A new Late Devonian genus with seed plant affinities Vegetative morphology of Yiduxylon trilobum gen. et sp. nov. from Hubei. (a) Stem attached by three fronds. PKUB14401. (b) Stem with three fronds in helix, with middle frond bifurcating and lower frond extending into rock (arrow). PKUB144403. (c-d) Part and counterpart of specimen showing connection of frond, primary and secondary pinnae and planate pinnules in one plane. Arrow in (d) indicating frond rachis enlarged in (e). PKUB14402a, PKUB14402b. (e) Enlargement of (d, arrow) displaying longitudinal ridges and grooves. (f) Secondary pinna rachis with planate pinnules. PKUB14407.Back to article page