Fig. 2.

Vegetative and early floral development of Berberidopsis beckleri. (A) Vegetative shoot with spiral initiation of leaves. (B) Flower developing at the top of an expanding shoot. (C, D) Highly similar flowers at initiation of the outer tepals. (E) Older flower with initiation of inner (petaloid) tepals. (F) Slightly older flower with initiation of inner tepals complete. Numbers indicate the order of initiation of tepals and bracts; upper five tepals are shown with white numbers. bt, lower bracts of the shoot. Scale bars = 100 µm.