Fig. 10.

Cottonwood Canyon lycophyte – reconstruction of the rooting system. Two K-branches diverge from a leafy stem, each of which gives rise to a new leafy stem and a root-bearing axis. Root-bearing axes bear reduced leaves along the base and grow into the substrate. Growth orientations differ between the two root-bearing axes illustrated, consistent with orientations observed in in situ specimens. Lateral roots diverge horizontally from root-bearing axes and exhibit variable arrangement along the axes. Scale bar = 20 mm.